[go: up one dir, main page]

USRE44803E1 - Anti-impingement femoral prostheses - Google Patents

Anti-impingement femoral prostheses Download PDF

Info

Publication number
USRE44803E1
USRE44803E1 US13/491,150 US201213491150A USRE44803E US RE44803 E1 USRE44803 E1 US RE44803E1 US 201213491150 A US201213491150 A US 201213491150A US RE44803 E USRE44803 E US RE44803E
Authority
US
United States
Prior art keywords
neck
head
stem
prosthetic component
femoral prosthetic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US13/491,150
Inventor
Michael A. Masini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MedIdea LLC
Original Assignee
MedIdea LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23630116&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=USRE44803(E1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by MedIdea LLC filed Critical MedIdea LLC
Priority to US13/491,150 priority Critical patent/USRE44803E1/en
Application granted granted Critical
Publication of USRE44803E1 publication Critical patent/USRE44803E1/en
Adjusted expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • A61F2002/30332—Conically- or frustoconically-shaped protrusion and recess
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • A61F2002/30332—Conically- or frustoconically-shaped protrusion and recess
    • A61F2002/30339—Double cones, i.e. connecting element having two conical connections, one at each of its opposite ends
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3611—Heads or epiphyseal parts of femur
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3625—Necks
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/365—Connections of heads to necks
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3652—Connections of necks to shafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit

Definitions

  • This invention relates generally to orthopaedic surgery and, more particularly, to a proximal femoral prosthesis facilitating an enhanced range of motion.
  • FIG. 1 is a generalized representation of a prior-art proximal femoral endoprosthesis.
  • a head portion 102 having an outer surface 103 which is at least partially hemispherical is joined to a stem 106 through a neck portion 104 .
  • Such interconnections may be permanent and integral, or modular connections may be used in conjunction with tapered metal joints, for example.
  • the stem 106 defines a first axis 108 which is aligned more or less to the longitudinal axis of the femur, depending upon the style of the particular implant.
  • the neck 104 defines a second axis 110 which intersects with the first axis 108 at a neck/shaft angle which may be varied in accordance with the physiology of the recipient or the desires of a given manufacturer.
  • a typical neck/shaft angle ⁇ is on the order of 135°.
  • the offset, or distance from the head portion to the axis of the stem may also varied to achieve a desired result.
  • the neck is straight or, in some cases, curved upwardly (or proximally) away from a plane transverse to the axis of the stem. That is to say, a centroid drawn from a central region 112 of the head 102 to a point of intersection 111 with the stem axis 108 is straight or occasionally curved to create a convex neck surface in existing designs.
  • Such a configuration has several shortcomings. For one, as manufacturers decrease the neck-shaft angle ⁇ to improve offset and abductor tension, patients lose movement in flexion secondary to impingement of the neck on the acetabular component.
  • the central portion of the neck of the inventive prosthesis is oriented downwardly relative to a straight line drawn between the ball portion and the point of interconnection to the exposed portion of the stem.
  • the neck is curved between the head and the neck, though, in alternative embodiments, the neck may be provided in straight and/or modular segments.
  • the invention is compatible with neck-shaft angles, offsets, head sizes, and other dimensions commonly designated with respect to available implants.
  • the neck may also be curved in the transverse plane adding increased anteversion or retroversion to the neck-shaft relationship.
  • FIG. 1 is a front-view drawing of a prior-art proximal femoral endoprosthesis having a straight neck;
  • FIG. 2 is a front-view drawing of a proximal femoral endoprosthesis according to the invention having a curved neck which reduces impingement;
  • FIG. 3 is a front-view drawing of an alternative embodiment of the invention having an anti-impingement neck provided in multiple straight segments;
  • FIG. 4 is a front-view drawing of a further alternative embodiment of the invention having a modular neck
  • FIG. 5 is a front-view drawing of a different alternative embodiment of the invention including a modular connection between an anti-impinging neck and implant;
  • FIG. 6 illustrates yet a different embodiment, wherein a modular ball component connects to an integral neck/stem
  • FIG. 7A is a top-view drawing illustrating how an anti-impinging neck may be curved only within the coronal plane through the head, neck and stem;
  • FIG. 7B illustrates how a neck according to the invention may be curved apart from, or in addition to a curve in the coronal plane so as to avoid impingement
  • FIG. 7C illustrates how “curves” relative to the coronal plane need not be smooth and continuous, but may be piecewise.
  • FIG. 2 illustrates a preferred embodiment of the invention from a front-view perspective.
  • a femoral endoprosthesis according to the invention features a stem ( 206 ), head or ball portion ( 202 ) and a neck 204 .
  • a straight line 210 has been drawn from a point 211 intersecting the axis of the stem and the center 212 of the ball.
  • the neck 204 of a prosthesis utilizing the invention curves downwardly or distally relative to the line establishing a superior concave surface to reduce impingement of the central region of the neck on the acetabular component.
  • the “central region” (“cr”) is defined as the region of the neck between a line parallel to “s” along the most medial aspect of the stem (“s 1 ”) and a line parallel to “s” and tangent to the lateral outer surface of the head closest to the superior surface of the neck (“s 2 ”).
  • centroid of the neck which in this case is defined as the centerline 220 through the center of each cross section taken along the body of the neck is, at least the mid section ( 222 ), below or distal to the straight line 210 between the intersection 211 with the axis 208 of the of the stem and the center 212 of the ball.
  • each point of the neck according to the invention need be below or distal to the straight line 210 , but rather, only a portion of the centerline. If one considers that the neck 204 includes a first portion 201 connected to the stem 206 , and a second portion 203 connected to the head 202 , if one draws a line tangent to the curve 220 at the point “X” and a second line tangent to the curve 210 at the point “C,” they will intersect at a point “P,” and it at least this point “P” which is distal or below the straight line 210 .
  • the neck according to the invention is said to be curved, it need not be a smooth, continuous curve as shown in FIG.
  • the first segment 301 includes a substantially straight longitudinal axis 302 (“n 1 ”), which intersects with the longitudinal axis (“s”) of the stem 300 at an angle a 1 .
  • the second segment of the neck, associated with connection with a head 305 includes a second substantially straight longitudinal axis 304 (“n 2 ”), which intersects with N 1 at the point “p,” without having to straight tangents to a curve. Note also, that in both of the embodiments of FIGS.
  • FIG. 4 is representative, wherein a module 402 fits to a stem through a joint having post 406 , and a head portion 404 attaches to the module 402 though a mating connector 408 .
  • Other arrangements are possible, including additional and differently configured modules, so long a least a portion of the centroid through the finally assembled structure is below or distal to a straight line from the center of the ball to a point of intersection with the axis of the stem.
  • FIG. 5 illustrates a different alternative embodiment, wherein an anti-impinging neck component 502 is integral with a ball portion, but connects to a stem through a joint 504 .
  • FIG. 6 illustrates a different configuration, wherein the neck and stem are integral, but a modular ball 602 connects to an end of the stem through the joint 604 .
  • a femoral prosthesis according to the invention may be curved only in the coronal plane, which may be defined as that plane which intersects the central portions of the head, neck and stem, as shown in FIG. 2
  • the neck according to the invention may also be curved relative to the coronal plane whether in a simple or compound configuration.
  • FIG. 7A shows a top-down view of a femoral prosthesis which, according to the invention, would have the ball portion curve upwardly and away from the paper in a manner which is different from prior art configurations.
  • in the neck may also be curved relative to the coronal plane, whether or not it is also curved within the coronal plane. That is, the curve of the neck may be piecewise as opposed to continuous, as shown in FIG. 7C .

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

A proximal femoral prosthesis minimizes impingement, thereby affording an enhanced range of motion as compared to existing devices. The central portion of the neck of a prosthesis according to the invention is oriented distally relative to a straight line drawn between the ball portion and a point of interconnection to the exposed portion of the stem. Such a configuration reduces impingement in flexion/internal rotation and extension/external rotation, assuming an appropriately placed acetabular component. In the preferred embodiment, the neck is curved between the head and the neck. In alternative embodiments, the neck may be provided in straight and/or modular segments. The invention is compatible with neck-shaft angles, offsets, head sizes, and other dimensions commonly designated with respect to available implants.

Description

REFERENCE TO RELATED APPLICATIONS
This application is a continuation of U.S. patent application Ser. No. 09/804,856, filed Mar. 13, 2001, now U.S. Pat. No. 6,383,225 which is a continuation of U.S. patent application Ser. No. 09/411,738, filed Oct. 1, 1999, now U.S. Pat. No. 6,200,350, the entire content of both applications being incorporated herein.
FIELD OF THE INVENTION
This invention relates generally to orthopaedic surgery and, more particularly, to a proximal femoral prosthesis facilitating an enhanced range of motion.
BACKGROUND OF THE INVENTION
In total hip arthroplasty, the defective head and neck of the proximal femur are removed and replaced with a prosthetic element. Although extramedullary units are available, intramedullary prostheses are more commonly employed, which feature an elongated stem adapted for insertion and fixation within the femoral canal.
FIG. 1 is a generalized representation of a prior-art proximal femoral endoprosthesis. A head portion 102 having an outer surface 103 which is at least partially hemispherical is joined to a stem 106 through a neck portion 104. Such interconnections may be permanent and integral, or modular connections may be used in conjunction with tapered metal joints, for example.
The stem 106 defines a first axis 108 which is aligned more or less to the longitudinal axis of the femur, depending upon the style of the particular implant. The neck 104 defines a second axis 110 which intersects with the first axis 108 at a neck/shaft angle which may be varied in accordance with the physiology of the recipient or the desires of a given manufacturer. A typical neck/shaft angle α is on the order of 135°. The offset, or distance from the head portion to the axis of the stem, may also varied to achieve a desired result. A number of other variations exist, including cemented versus cementless interfaces, curved versus straight stem profiles, differently sized balls, and so forth.
In all existing configurations, the neck is straight or, in some cases, curved upwardly (or proximally) away from a plane transverse to the axis of the stem. That is to say, a centroid drawn from a central region 112 of the head 102 to a point of intersection 111 with the stem axis 108 is straight or occasionally curved to create a convex neck surface in existing designs. Such a configuration has several shortcomings. For one, as manufacturers decrease the neck-shaft angle α to improve offset and abductor tension, patients lose movement in flexion secondary to impingement of the neck on the acetabular component.
SUMMARY OF THE INVENTION
This invention resides in proximal femoral prostheses which minimize impingement, thereby affording an enhanced range of motion as compared to existing devices. Broadly, the central portion of the neck of the inventive prosthesis is oriented downwardly relative to a straight line drawn between the ball portion and the point of interconnection to the exposed portion of the stem. Such a configuration reduces impingement in flexion/internal rotation and extension/external rotation, assuming an appropriately placed acetabular component. In the preferred embodiment, the neck is curved between the head and the neck, though, in alternative embodiments, the neck may be provided in straight and/or modular segments. The invention is compatible with neck-shaft angles, offsets, head sizes, and other dimensions commonly designated with respect to available implants. The neck may also be curved in the transverse plane adding increased anteversion or retroversion to the neck-shaft relationship.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a front-view drawing of a prior-art proximal femoral endoprosthesis having a straight neck;
FIG. 2 is a front-view drawing of a proximal femoral endoprosthesis according to the invention having a curved neck which reduces impingement;
FIG. 3 is a front-view drawing of an alternative embodiment of the invention having an anti-impingement neck provided in multiple straight segments;
FIG. 4 is a front-view drawing of a further alternative embodiment of the invention having a modular neck;
FIG. 5 is a front-view drawing of a different alternative embodiment of the invention including a modular connection between an anti-impinging neck and implant;
FIG. 6 illustrates yet a different embodiment, wherein a modular ball component connects to an integral neck/stem;
FIG. 7A is a top-view drawing illustrating how an anti-impinging neck may be curved only within the coronal plane through the head, neck and stem;
FIG. 7B illustrates how a neck according to the invention may be curved apart from, or in addition to a curve in the coronal plane so as to avoid impingement; and
FIG. 7C illustrates how “curves” relative to the coronal plane need not be smooth and continuous, but may be piecewise.
 DETAILED DESCRIPTION OF THE INVENTION
Having discussed the prior-art design of FIG. 1 in the Background of the Invention, reference will now be made to FIG. 2, which illustrates a preferred embodiment of the invention from a front-view perspective. As with existing devices, a femoral endoprosthesis according to the invention features a stem (206), head or ball portion (202) and a neck 204. For the sake of reference, a straight line 210 has been drawn from a point 211 intersecting the axis of the stem and the center 212 of the ball. In contrast to existing devices, wherein the neck is either straight or curved upwardly or proximally relative to the straight line, the neck 204 of a prosthesis utilizing the invention curves downwardly or distally relative to the line establishing a superior concave surface to reduce impingement of the central region of the neck on the acetabular component. The “central region” (“cr”) is defined as the region of the neck between a line parallel to “s” along the most medial aspect of the stem (“s1”) and a line parallel to “s” and tangent to the lateral outer surface of the head closest to the superior surface of the neck (“s2”).
More particularly, the centroid of the neck, which in this case is defined as the centerline 220 through the center of each cross section taken along the body of the neck is, at least the mid section (222), below or distal to the straight line 210 between the intersection 211 with the axis 208 of the of the stem and the center 212 of the ball.
Not each point of the neck according to the invention need be below or distal to the straight line 210, but rather, only a portion of the centerline. If one considers that the neck 204 includes a first portion 201 connected to the stem 206, and a second portion 203 connected to the head 202, if one draws a line tangent to the curve 220 at the point “X” and a second line tangent to the curve 210 at the point “C,” they will intersect at a point “P,” and it at least this point “P” which is distal or below the straight line 210. In addition, although the neck according to the invention is said to be curved, it need not be a smooth, continuous curve as shown in FIG. 2, but rather, may be made up of one or more straight segments such as 302 and 304, as shown in FIG. 3. In this configuration, the first segment 301 includes a substantially straight longitudinal axis 302 (“n1”), which intersects with the longitudinal axis (“s”) of the stem 300 at an angle a1. The second segment of the neck, associated with connection with a head 305, includes a second substantially straight longitudinal axis 304 (“n2”), which intersects with N1 at the point “p,” without having to straight tangents to a curve. Note also, that in both of the embodiments of FIGS. 2 and 3, if one extends the axis of the second segment of the neck associated with interconnection to the head or ball portion, the angle formed between this line and the stem “s” (“a2”), is at all times greater than the angle A1 formed between the axis of the first segment associated with interconnection to the stem, and the longitudinal axis of the stem “s.” This is contrast to existing devices, wherein these two angles are either the same, or wherein a1 is greater than a2, indicating that the neck curves downwardly as opposed to upwardly, thereby potentially exacerbating problems with impingement.
Furthermore, a prosthesis having a neck according to the invention need not be solid and integral but instead, may utilize modular segments. FIG. 4 is representative, wherein a module 402 fits to a stem through a joint having post 406, and a head portion 404 attaches to the module 402 though a mating connector 408. Other arrangements are possible, including additional and differently configured modules, so long a least a portion of the centroid through the finally assembled structure is below or distal to a straight line from the center of the ball to a point of intersection with the axis of the stem.
FIG. 5 illustrates a different alternative embodiment, wherein an anti-impinging neck component 502 is integral with a ball portion, but connects to a stem through a joint 504. FIG. 6 illustrates a different configuration, wherein the neck and stem are integral, but a modular ball 602 connects to an end of the stem through the joint 604.
Although a femoral prosthesis according to the invention may be curved only in the coronal plane, which may be defined as that plane which intersects the central portions of the head, neck and stem, as shown in FIG. 2, in particular, the neck according to the invention may also be curved relative to the coronal plane whether in a simple or compound configuration. Reference is made to FIG. 7A, which shows a top-down view of a femoral prosthesis which, according to the invention, would have the ball portion curve upwardly and away from the paper in a manner which is different from prior art configurations. But in addition to such an upward curve in the coronal plane 702, in the neck may also be curved relative to the coronal plane, whether or not it is also curved within the coronal plane. That is, the curve of the neck may be piecewise as opposed to continuous, as shown in FIG. 7C.

Claims (8)

I claim:
1. An anti-impingement femoral prosthetic component, comprising:
a stem having a distal portion adapted for placement within an intramedullary canal, a proximal end which remains externally exposed subsequent to fixation, and a longitudinal axis, “s”;
a head having a center configured to co-act with a corresponding acetabular component; a coronal plane being defined as the plane which intersects “s” and the center of the head; a neck connecting the stem to the head, the neck having superior and inferior surfaces and a central region defined as the region of the neck between a line parallel to “s” along the most medial aspect of the stem and a line parallel to “s” and tangent to the lateral outer surface of the head closest to the superior surface of the neck; and
wherein the superior and inferior surfaces surface of the neck define defines smooth, continuous curves in the coronal plane, and the inferior surface of the neck is curved or angled in the coronal plane, with the apex of each curve surface being oriented distally, establishing a superior concave surface to reduce impingement of the central region of the neck on the acetabular component, thereby facilitating an enhanced range of motion in flexion/internal rotation and extension/external rotation.
2. The anti-impingement femoral prosthetic component of claim 1, including different head sizes, stem offsets and neck angles to accommodate varying patient physiologies.
3. The femoral prosthetic component of claim 1, wherein the neck has a radius of the curvature with a center located proximal to the neck.
4. The femoral prosthetic component of claim 1, wherein the head is modularly connected to the neck.
5. The femoral prosthetic component of claim 1, wherein the neck is modularly connected to the stem.
6. The femoral prosthetic component of claim 1, wherein the neck is modularly connected to the body portion.
7. The femoral prosthetic component of claim 1, wherein the neck is further angled or curved outside the coronal plane to change the anteversion or retroversion of the head relative to femur.
8. The femoral prosthetic component of claim 1, wherein the body portion may be rotated relative to the stem to change the anteversion or retroversion of the neck or head.
US13/491,150 1999-10-01 2012-06-07 Anti-impingement femoral prostheses Expired - Fee Related USRE44803E1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/491,150 USRE44803E1 (en) 1999-10-01 2012-06-07 Anti-impingement femoral prostheses

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US09/411,738 US6200350B1 (en) 1999-10-01 1999-10-01 Anti-impingement femoral prostheses
US09/804,856 US6383225B2 (en) 1999-10-01 2001-03-13 Anti-impingement hip system
US10/140,566 US7985261B2 (en) 1999-10-01 2002-05-07 Anti-impingement femoral prostheses
US13/491,150 USRE44803E1 (en) 1999-10-01 2012-06-07 Anti-impingement femoral prostheses

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US10/140,566 Reissue US7985261B2 (en) 1999-10-01 2002-05-07 Anti-impingement femoral prostheses

Publications (1)

Publication Number Publication Date
USRE44803E1 true USRE44803E1 (en) 2014-03-11

Family

ID=23630116

Family Applications (4)

Application Number Title Priority Date Filing Date
US09/411,738 Expired - Lifetime US6200350B1 (en) 1999-10-01 1999-10-01 Anti-impingement femoral prostheses
US09/804,856 Expired - Lifetime US6383225B2 (en) 1999-10-01 2001-03-13 Anti-impingement hip system
US10/140,566 Ceased US7985261B2 (en) 1999-10-01 2002-05-07 Anti-impingement femoral prostheses
US13/491,150 Expired - Fee Related USRE44803E1 (en) 1999-10-01 2012-06-07 Anti-impingement femoral prostheses

Family Applications Before (3)

Application Number Title Priority Date Filing Date
US09/411,738 Expired - Lifetime US6200350B1 (en) 1999-10-01 1999-10-01 Anti-impingement femoral prostheses
US09/804,856 Expired - Lifetime US6383225B2 (en) 1999-10-01 2001-03-13 Anti-impingement hip system
US10/140,566 Ceased US7985261B2 (en) 1999-10-01 2002-05-07 Anti-impingement femoral prostheses

Country Status (1)

Country Link
US (4) US6200350B1 (en)

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6494913B1 (en) 1998-03-17 2002-12-17 Acumed, Inc. Shoulder prosthesis
US20040010319A1 (en) * 1998-04-14 2004-01-15 Osteoimplant Technology Inc. Intrinsic stability in a total hip stem
US7323013B2 (en) * 1998-04-14 2008-01-29 Encore Medical Asset Corporation Differential porosity prosthetic hip system
US6200350B1 (en) * 1999-10-01 2001-03-13 Medidea, Llc Anti-impingement femoral prostheses
DE10036984A1 (en) * 2000-07-29 2002-02-07 Klaus Draenert Modular revision prosthesis
GB0207170D0 (en) * 2002-03-26 2002-05-08 Mcminn Derek J W Hip joint prosthesis
US20040138757A1 (en) * 2003-01-09 2004-07-15 Nadzadi Mark E. Eccentric neck for femoral hip prosthesis
US7572297B2 (en) 2003-10-09 2009-08-11 Omni Life Science, Inc. Tapered joint prosthesis
US7060102B2 (en) * 2004-01-21 2006-06-13 Thompson Matthew T Femoral implant for hip arthroplasty
US7135044B2 (en) * 2004-03-09 2006-11-14 Howmedics Osteonics Corp. Modular prosthesis kits
US7547328B2 (en) * 2004-05-26 2009-06-16 Sidebotham Christopher G Canine femoral stem system
WO2005117763A2 (en) * 2004-05-28 2005-12-15 Smith & Nephew, Inc. Fluted intramedullary stem
US7892290B2 (en) * 2004-05-28 2011-02-22 Smith & Nephew, Inc. Fluted sleeve hip prosthesis for modular stem
US7179259B1 (en) 2004-06-04 2007-02-20 Biomet Manufacturing Corp. Instrument assembly for lateral implant
US7641698B1 (en) * 2004-06-04 2010-01-05 Biomet Manufacturing Corp. Modular hip joint implant
GB2419291A (en) * 2004-10-21 2006-04-26 Biomet Uk Ltd A femoral head prosthesis
KR100652414B1 (en) * 2005-06-10 2006-12-01 삼성전자주식회사 Memory device that can preserve some data in deep power down mode and its operation method
US20080167723A1 (en) * 2006-03-20 2008-07-10 Zimmer, Inc. Prosthetic hip implants
WO2007109601A2 (en) * 2006-03-20 2007-09-27 Zimmer Technology, Inc. Prosthetic hip implants
US8974540B2 (en) * 2006-12-07 2015-03-10 Ihip Surgical, Llc Method and apparatus for attachment in a modular hip replacement or fracture fixation device
US8579985B2 (en) 2006-12-07 2013-11-12 Ihip Surgical, Llc Method and apparatus for hip replacement
US8029573B2 (en) 2006-12-07 2011-10-04 Ihip Surgical, Llc Method and apparatus for total hip replacement
US8900320B2 (en) 2009-02-24 2014-12-02 Smith & Nephew, Inc Methods and apparatus for FAI surgeries
US20120116533A1 (en) * 2009-07-10 2012-05-10 Miluxholding Sa Hip joint device and method
EP2451389B1 (en) * 2009-07-10 2015-08-19 Kirk Promotion LTD. Hip joint device
US8226725B2 (en) * 2009-09-01 2012-07-24 Howmedica Osteonics Corp. Prosthesis having a soft tissue attachment element
US8182542B2 (en) 2009-09-01 2012-05-22 Howmedica Osteonics Corp. Soft tissue attachment mechanism
ITUD20100042A1 (en) * 2010-03-04 2011-09-05 Samo S P A PIN FOR A FEMORAL PROSTHESIS FOR THE HOOK AND FEMORAL PROSTHESIS INCLUDING THIS PIN
MX2013002227A (en) 2010-08-26 2013-05-09 Smith & Nephew Inc Implants, surgical methods, and instrumentation for use in femoroacetabular impingement surgeries.
IT1403668B1 (en) * 2011-02-01 2013-10-31 Ala Ortho S R L FEMORAL STEM FOR PROSTHESIS OF THE HIP.
US9023112B2 (en) 2011-02-24 2015-05-05 Depuy (Ireland) Maintaining proper mechanics THA
US9101477B2 (en) * 2011-10-17 2015-08-11 Thomas Hatton McCoy Anterior offset component for total hip replacement
US9668745B2 (en) 2011-12-19 2017-06-06 Depuy Ireland Unlimited Company Anatomical concentric spheres THA
US20130304225A1 (en) * 2012-05-08 2013-11-14 Richard D. Komistek Optimal contact mechanics for a tha
US8858645B2 (en) 2012-06-21 2014-10-14 DePuy Synthes Products, LLC Constrained mobile bearing hip assembly
US9427322B1 (en) 2012-06-27 2016-08-30 Signal Medical Corporation Hip implant
US10022229B2 (en) * 2013-09-09 2018-07-17 Cossington Limited Adjustable modular spacer device for the articulations of the human body
DE102013219656A1 (en) * 2013-09-27 2015-04-02 Heraeus Medical Gmbh Modular joint spacer system
EP3294176B1 (en) 2015-05-08 2019-02-27 Brainlab AG Determination of an implant orientation relative to a bone
EP3294177B1 (en) 2015-05-08 2019-03-06 Brainlab AG Method and apparatus for judging implant orientation data
KR101696842B1 (en) * 2015-09-24 2017-01-17 서강대학교산학협력단 Desing method for neck of prosthesis on total hip replacement and the prosthesis
AU2016331660A1 (en) * 2015-09-30 2018-05-10 David Phillip Kirwan Hip prosthesis
AU2023271572A1 (en) * 2022-05-20 2024-11-07 David Kirwan A femoral prosthetic component

Citations (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848272A (en) 1972-01-13 1974-11-19 United States Surgical Corp Artificial hip joint
US4279041A (en) 1978-07-06 1981-07-21 Buchholz Hans Wilhelm Endoprosthesis composed of a socket and a head receivable and lockable in the socket
ES263394U (en) 1982-02-22 1984-05-16 Ruiz Fernandez J Alfredo Hips prosthesis with changable elements. (Machine-translation by Google Translate, not legally binding)
IT1129191B (en) 1980-10-21 1986-06-04 Vincenzo Peruzzini FEMORAL PROSTHESIS
FR2580926A1 (en) 1985-04-24 1986-10-31 Montagne Patrick FEMALE PROSTHESIS WITH INDEPENDENT AND VARIABLE LENGTH AND DIRECTIONAL MODULAR COLLAR FOR SINGLE FEMORAL PROSTHESES OR TOTAL HIP PROSTHESES
US4822370A (en) 1986-01-14 1989-04-18 Orthoplant Endoprothetik Hip joint femoral prosthesis
US4908035A (en) 1986-04-03 1990-03-13 Sulzer Brothers Limited Prosthesis for a hip joint
EP0363019A2 (en) 1988-09-09 1990-04-11 Biomet Limited Prosthetic components
US4938770A (en) 1988-10-27 1990-07-03 Sulzer Brothers Limited Stem for a femoral head prosthesis
US4957510A (en) 1987-08-03 1990-09-18 Patrizio Cremascoli Hip prosthesis structure adapted for easy fitting to the patient coxo-femural articulation
US4978356A (en) 1983-03-08 1990-12-18 Joint Medical Products Corporation Ball and socket bearing for artificial joint
US4978359A (en) 1988-04-27 1990-12-18 Thera Patent Gmbh & Co. Kg Gesellschaft Fur Industrielle Schutzrechte Prosthesis shaft
US5002581A (en) 1989-11-03 1991-03-26 Dow Corning Wright Corporation Modular hip joint prosthesis with adjustable anteversion
US5002578A (en) 1990-05-04 1991-03-26 Venus Corporation Modular hip stem prosthesis apparatus and method
US5030238A (en) 1987-03-27 1991-07-09 Gmt Gesellschaft Fur Medizinische Technik Mbh Hip prosthesis
US5030234A (en) 1989-12-12 1991-07-09 Pappas Michael J Prosthetic device with modular stem
US5047062A (en) 1984-01-26 1991-09-10 Pappas Michael J Femoral stem-type prosthesis
US5080685A (en) 1986-08-15 1992-01-14 Boehringer Mannheim Corporation Modular hip prosthesis
US5108452A (en) 1989-02-08 1992-04-28 Smith & Nephew Richards Inc. Modular hip prosthesis
EP0359672B1 (en) 1988-09-16 1992-11-19 Francis Henri Bréard Articulation prosthesis, in particular a hip prosthesis, with a self-damping property
US5201882A (en) 1989-11-03 1993-04-13 Paxson Robert D Modular hip joint prosthesis with adjustable anteversion
FR2697996A1 (en) 1992-11-17 1994-05-20 Medinov Sa Femoral prosthesis assembly - has shank whose end can receive series of necks connected to spherical head in variety of positions
US5342363A (en) 1992-11-30 1994-08-30 Wright Medical Technology, Inc. Medical instrument and procedure
US5358526A (en) 1991-12-27 1994-10-25 Etablissements Tornier Modular shoulder prosthesis
US5387244A (en) 1988-10-28 1995-02-07 Science Et Medecine (Sem) Artificial hip joint
FR2721200A1 (en) 1994-06-17 1995-12-22 Cremascoli France Hip prosthesis with variable articulation
US5507818A (en) 1994-06-30 1996-04-16 Mclaughlin; John A. Multipolar joint endoprosthesis
US5507819A (en) 1994-11-02 1996-04-16 Wolf; Eugene M. Apparatus and method for stabilizing a humeral head in a shoulder
US5580352A (en) * 1990-06-06 1996-12-03 Sekel; Ronald Distal shaft with fast and slow screw threads
US5653765A (en) 1994-07-01 1997-08-05 Ortho Development Corporation Modular prosthesis
US5653764A (en) 1994-02-17 1997-08-05 Murphy; Stephen B. Modular hip prosthesis with discrete selectable angular orientation
US5702480A (en) 1992-10-13 1997-12-30 Kropf; Philipp Rolf Modular hip joint prosthesis
US5702484A (en) 1995-01-11 1997-12-30 Biomet Deutschland Gmbh Endoprosthesis
FR2751528A1 (en) 1996-07-24 1998-01-30 Merck Biomaterial France Artificial hip joint prosthesis
EP0552949B1 (en) 1992-01-23 1998-03-25 Howmedica International Inc. Process for the manufacture of an acetabular cup for a total hip prosthesis
US5755805A (en) 1996-07-25 1998-05-26 Whiteside; Leo A. Tapered prosthesis component
US5800558A (en) 1997-02-19 1998-09-01 Lahaise, Sr.; Gerard A. Hip prosthesis
US5876459A (en) 1996-08-30 1999-03-02 Powell; Douglas Hunter Adjustable modular orthopedic implant
US5888207A (en) 1996-05-25 1999-03-30 Gmt Gesellschaft Fur Medizinische Technik Mbh Saddle-type hip prosthesis
US5902340A (en) 1996-10-29 1999-05-11 Hayes Medical, Inc. Method of assembling a modular prosthesis used for bone replacement
US5906644A (en) 1996-08-30 1999-05-25 Powell; Douglas Hunter Adjustable modular orthopedic implant
US5916270A (en) 1997-06-06 1999-06-29 New York Society For The Ruptured And Crippled Maintaining The Hospital For Special Surgery Hip replacement
US6139583A (en) 1998-06-12 2000-10-31 Johnson; Lanny L. Femoral prosthesis
US6200350B1 (en) * 1999-10-01 2001-03-13 Medidea, Llc Anti-impingement femoral prostheses
US6224634B1 (en) * 1997-03-26 2001-05-01 Waldemar Link (Gmbh & Co.) Hip-joint endoprosthesis
US6238436B1 (en) 1994-11-19 2001-05-29 Biomet, Merck Deutschland Gmbh Modular artificial hip joint
US6306174B1 (en) 1998-12-18 2001-10-23 Benoist Girard Sas Femoral component
US20020038148A1 (en) 2000-03-13 2002-03-28 Jose Fernandez Modular hip prosthesis
US20020052661A1 (en) 2000-10-30 2002-05-02 Sulzer Orthopedics Ltd. Femur shaft prosthesis with a proximal centering apparatus
US20020059000A1 (en) 2000-11-08 2002-05-16 Dwyer Kimberly A. Self-locking modular prosthesis having taper feature and associated method
US6413280B1 (en) * 1996-10-04 2002-07-02 Frederic C. Feiler Hip joint prosthesis
US6436147B1 (en) 1999-06-23 2002-08-20 Plus Endoprothetik Ag Hip-joint endoprosthesis system
US20020120343A1 (en) 2001-02-27 2002-08-29 Doubler Robert L. Double d key locking prosthesis

Patent Citations (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848272A (en) 1972-01-13 1974-11-19 United States Surgical Corp Artificial hip joint
US4279041A (en) 1978-07-06 1981-07-21 Buchholz Hans Wilhelm Endoprosthesis composed of a socket and a head receivable and lockable in the socket
IT1129191B (en) 1980-10-21 1986-06-04 Vincenzo Peruzzini FEMORAL PROSTHESIS
ES263394U (en) 1982-02-22 1984-05-16 Ruiz Fernandez J Alfredo Hips prosthesis with changable elements. (Machine-translation by Google Translate, not legally binding)
US4978356A (en) 1983-03-08 1990-12-18 Joint Medical Products Corporation Ball and socket bearing for artificial joint
US5047062A (en) 1984-01-26 1991-09-10 Pappas Michael J Femoral stem-type prosthesis
FR2580926A1 (en) 1985-04-24 1986-10-31 Montagne Patrick FEMALE PROSTHESIS WITH INDEPENDENT AND VARIABLE LENGTH AND DIRECTIONAL MODULAR COLLAR FOR SINGLE FEMORAL PROSTHESES OR TOTAL HIP PROSTHESES
US4822370A (en) 1986-01-14 1989-04-18 Orthoplant Endoprothetik Hip joint femoral prosthesis
US4908035A (en) 1986-04-03 1990-03-13 Sulzer Brothers Limited Prosthesis for a hip joint
US5080685A (en) 1986-08-15 1992-01-14 Boehringer Mannheim Corporation Modular hip prosthesis
US5030238A (en) 1987-03-27 1991-07-09 Gmt Gesellschaft Fur Medizinische Technik Mbh Hip prosthesis
US4957510A (en) 1987-08-03 1990-09-18 Patrizio Cremascoli Hip prosthesis structure adapted for easy fitting to the patient coxo-femural articulation
US4978359A (en) 1988-04-27 1990-12-18 Thera Patent Gmbh & Co. Kg Gesellschaft Fur Industrielle Schutzrechte Prosthesis shaft
EP0363019A2 (en) 1988-09-09 1990-04-11 Biomet Limited Prosthetic components
EP0359672B1 (en) 1988-09-16 1992-11-19 Francis Henri Bréard Articulation prosthesis, in particular a hip prosthesis, with a self-damping property
US4938770A (en) 1988-10-27 1990-07-03 Sulzer Brothers Limited Stem for a femoral head prosthesis
US5387244A (en) 1988-10-28 1995-02-07 Science Et Medecine (Sem) Artificial hip joint
US5507830A (en) 1989-02-08 1996-04-16 Smith & Nephew Richards Inc. Modular hip prosthesis
US5108452A (en) 1989-02-08 1992-04-28 Smith & Nephew Richards Inc. Modular hip prosthesis
US5002581A (en) 1989-11-03 1991-03-26 Dow Corning Wright Corporation Modular hip joint prosthesis with adjustable anteversion
US5201882A (en) 1989-11-03 1993-04-13 Paxson Robert D Modular hip joint prosthesis with adjustable anteversion
US5030234A (en) 1989-12-12 1991-07-09 Pappas Michael J Prosthetic device with modular stem
US5002578A (en) 1990-05-04 1991-03-26 Venus Corporation Modular hip stem prosthesis apparatus and method
US5580352A (en) * 1990-06-06 1996-12-03 Sekel; Ronald Distal shaft with fast and slow screw threads
US5358526A (en) 1991-12-27 1994-10-25 Etablissements Tornier Modular shoulder prosthesis
EP0552949B1 (en) 1992-01-23 1998-03-25 Howmedica International Inc. Process for the manufacture of an acetabular cup for a total hip prosthesis
US5702480A (en) 1992-10-13 1997-12-30 Kropf; Philipp Rolf Modular hip joint prosthesis
FR2697996A1 (en) 1992-11-17 1994-05-20 Medinov Sa Femoral prosthesis assembly - has shank whose end can receive series of necks connected to spherical head in variety of positions
US5342363A (en) 1992-11-30 1994-08-30 Wright Medical Technology, Inc. Medical instrument and procedure
US5653764A (en) 1994-02-17 1997-08-05 Murphy; Stephen B. Modular hip prosthesis with discrete selectable angular orientation
FR2721200A1 (en) 1994-06-17 1995-12-22 Cremascoli France Hip prosthesis with variable articulation
US5507818A (en) 1994-06-30 1996-04-16 Mclaughlin; John A. Multipolar joint endoprosthesis
US5653765A (en) 1994-07-01 1997-08-05 Ortho Development Corporation Modular prosthesis
US5507819A (en) 1994-11-02 1996-04-16 Wolf; Eugene M. Apparatus and method for stabilizing a humeral head in a shoulder
US6238436B1 (en) 1994-11-19 2001-05-29 Biomet, Merck Deutschland Gmbh Modular artificial hip joint
US5702484A (en) 1995-01-11 1997-12-30 Biomet Deutschland Gmbh Endoprosthesis
US5888207A (en) 1996-05-25 1999-03-30 Gmt Gesellschaft Fur Medizinische Technik Mbh Saddle-type hip prosthesis
FR2751528A1 (en) 1996-07-24 1998-01-30 Merck Biomaterial France Artificial hip joint prosthesis
US5755805A (en) 1996-07-25 1998-05-26 Whiteside; Leo A. Tapered prosthesis component
US5876459A (en) 1996-08-30 1999-03-02 Powell; Douglas Hunter Adjustable modular orthopedic implant
US5906644A (en) 1996-08-30 1999-05-25 Powell; Douglas Hunter Adjustable modular orthopedic implant
US6413280B1 (en) * 1996-10-04 2002-07-02 Frederic C. Feiler Hip joint prosthesis
US5902340A (en) 1996-10-29 1999-05-11 Hayes Medical, Inc. Method of assembling a modular prosthesis used for bone replacement
US5800558A (en) 1997-02-19 1998-09-01 Lahaise, Sr.; Gerard A. Hip prosthesis
US6224634B1 (en) * 1997-03-26 2001-05-01 Waldemar Link (Gmbh & Co.) Hip-joint endoprosthesis
US5916270A (en) 1997-06-06 1999-06-29 New York Society For The Ruptured And Crippled Maintaining The Hospital For Special Surgery Hip replacement
US6139583A (en) 1998-06-12 2000-10-31 Johnson; Lanny L. Femoral prosthesis
US6306174B1 (en) 1998-12-18 2001-10-23 Benoist Girard Sas Femoral component
US6436147B1 (en) 1999-06-23 2002-08-20 Plus Endoprothetik Ag Hip-joint endoprosthesis system
US6200350B1 (en) * 1999-10-01 2001-03-13 Medidea, Llc Anti-impingement femoral prostheses
US20020038148A1 (en) 2000-03-13 2002-03-28 Jose Fernandez Modular hip prosthesis
US20020052661A1 (en) 2000-10-30 2002-05-02 Sulzer Orthopedics Ltd. Femur shaft prosthesis with a proximal centering apparatus
US20020059000A1 (en) 2000-11-08 2002-05-16 Dwyer Kimberly A. Self-locking modular prosthesis having taper feature and associated method
US20020058999A1 (en) 2000-11-08 2002-05-16 Dwyer Kimberly A. Modular prosthesis having a stem component with a counterbored cavity defined therein and associated method
US20020120343A1 (en) 2001-02-27 2002-08-29 Doubler Robert L. Double d key locking prosthesis

Non-Patent Citations (25)

* Cited by examiner, † Cited by third party
Title
Barrack et al., Instability After Major Joint Replacement, Orthopedic Clinics of North America, vol. 32, No. 4, Oct. 2001.
Barrack et al., The Effect of Component Design on Range of Motion to Impingement in Total Hip Arthroplasty, AAOS Instructional Course Lectures, vol. 50, 2001.
Egan et al., Biomechanics of Total Hip Arthroplasty, Seminars in Arthroplasty, vol. 4, Oct. 1993.
Gondi et al., Impingement After Total Hip Arthroplasty Related to Prosthetic Component Selection and Range of Motion, Journal of the Southern Orthopaedic Association, vol. 6, No. 4, Winter 1997.
Herrlin et al., Range of Motion Caused by Design of the Total Hip Prosthesis, Acta Radiological 29 (1988).
Huo et al., Custom-Designed Femoral Prostheses in Total Hip Arthroplasty Done with Cement for Severe Dysplasia of the Hip, The Journal of Bone and Joint Surgery, vol. 75-A, No. 10, Oct. 1993.
Krushell et al., Range of Motion in Contemporary Total Hip Arthroplasty, The Journal of Arthroplasty, vol. 6, No. 2, Jun. 1991.
Long-Term Results of Total Hip Arthroplasty with a Cemented Custom-Designed Swan-Neck Femoral Component for Congenital Dislocation or Severe Dysplasia, DiFazio et al., Journal of Bone and Joint Surgery, vol. 84-A, No. 2, Feb. 2002.
McGrory, Effect of Femoral Offset on Range of Motion and Abductor Muscle Strength After Total Hip Arthroplasty, Journal of Bone Joint Surgery, vol. 77-B, No. 6, Nov. 1995.
Modular Anatomical Hip Prothesis, A.C.S.E.L. II, a Progressive System Catalog, (author unknown; believed to have been offered for sale, publicly used, and/or published prior to the filing date of this application).
Orthoplant, Ostroprovit Adapter System, (author unknown; believed to have been offered for sale, publicly used, and/or published prior to the filing date of this application).
Portland Orthopaedics advertisement for Margron Hip Replacement System. Copyright 2002.
Prosthetic Design and Outcome in Total Hip Arthroplasty, The Journal of Bone & Joint Surgery, vol. 83-A, No. 5, May 2001.
Range of Motion of the Hip, The Orthopaedic Forum, vol. 82-A, No. 11, Nov. 2000.
Toni, A. et al., Anatomic cementless total hip arthroplasty with ceramic bearings and modular necks: 3 to 5 years follow-up, Hip International, 11(1): 1-17, 2001.
Traina, F. et al., Modular Neck Primary Prosthesis: Experimental and Clinical Outcomes, Scientific Exhibit at the 71st AAOS Annual Meeting, Mar. 10-14, 2004.
Whiteside Biomechanics Quatroloc Femoral System Surgical Procedures manual, (believed to have been offered for sale, publicly used, and/or published prior to filing date of the present application).
Whiteside Biomechanics, Inc. Quatroloc 510(k) Summary, Aug. 7, 1997.
Whiteside et al., Fixation of the Quadralock Femoral Component: A Biomechanical and Clinical Study, Clinical Orthopedics and Related Research, vol. 1 (393), Dec. 2001.
Wright Medical Technology, Profemur Total Hip System catalog (date unknown; believed to have been offered for sale, publicly used, and/or published prior to the filing date of this application).
Wright Medical Technology, Profemur Total Hip System Modular Neck Technical Monograph, (author unknown; believed to have been offered for sale, publicly used, and/or published prior to the filing date of this application).
Wright Medical Technology, Profemur Z Total Hip System Surgical Technique, (author unknown; believed to have been offered for sale, publicly used, and/or published prior to the filing date of this application).
Zimmer Modular Revision (ZMR) Hip System.
Zimmer Modular Revision, (author unknown; believed to have been offered for sale, publicly used, and/or published prior to the filing date of this application).
Zimmer Revision Taper Hip Prosthesis.

Also Published As

Publication number Publication date
US7985261B2 (en) 2011-07-26
US6383225B2 (en) 2002-05-07
US6200350B1 (en) 2001-03-13
US20010008981A1 (en) 2001-07-19
US20020128720A1 (en) 2002-09-12

Similar Documents

Publication Publication Date Title
USRE44803E1 (en) Anti-impingement femoral prostheses
EP1402854B1 (en) Reverse-type humeral prosthesis
US4546501A (en) Hip prosthesis
US5888210A (en) Stem of a femoral component of a hip joint endoprosthesis
US10603181B2 (en) Shoulder prosthesis
US6048365A (en) Implantable orthopedic prosthesis having keyed taper connector
US6436147B1 (en) Hip-joint endoprosthesis system
AU719572B2 (en) Asymmetric hip stem
US7776098B2 (en) Modular femoral prosthesis with on-axis junction
EP0993813B1 (en) Stem offset mechanism for joint prosthesis
US8689425B2 (en) Manufacturing a shoulder prosthesis with a one-piece humeral head
US6953479B2 (en) Orthopedic implant extension
US8801799B2 (en) Femoral head prosthesis
US5047062A (en) Femoral stem-type prosthesis
US20030204267A1 (en) Modular limb preservation system
US20110054628A1 (en) Reflex fixation geometry revision and reconstruction system reverse articulation
WO2000018335A1 (en) Implantable humeral prosthesis having offset head and stem connection
US20210369461A1 (en) Anatomically relieved augments
USRE32488E (en) Hip prosthesis
US20040138757A1 (en) Eccentric neck for femoral hip prosthesis
US20120143346A1 (en) Modular hip stem system
US10405984B2 (en) Femoral stem prosthesis
ITTO940061A1 (en) PROSTHESIS FOR FEMORAL IMPLANT
EP1025816A1 (en) Femoral component for use in a replacement hip joint

Legal Events

Date Code Title Description
FPAY Fee payment

Year of fee payment: 4

FEPP Fee payment procedure

Free format text: ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: BIG.)

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE UNDER 1.28(C) (ORIGINAL EVENT CODE: M1559); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

FEPP Fee payment procedure

Free format text: PETITION RELATED TO MAINTENANCE FEES GRANTED (ORIGINAL EVENT CODE: PTGR); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

FEPP Fee payment procedure

Free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

LAPS Lapse for failure to pay maintenance fees

Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY