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US3658056A - Hip joint prosthesis - Google Patents

Hip joint prosthesis Download PDF

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Publication number
US3658056A
US3658056A US817654A US3658056DA US3658056A US 3658056 A US3658056 A US 3658056A US 817654 A US817654 A US 817654A US 3658056D A US3658056D A US 3658056DA US 3658056 A US3658056 A US 3658056A
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US
United States
Prior art keywords
pin
joint head
recess
shaft
corner
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 - Lifetime
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US817654A
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English (en)
Inventor
Arnold H Huggler
Bernhard G Weber
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Individual
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Individual
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    • 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
    • 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
    • A61F2/3662—Femoral shafts
    • A61F2/367—Proximal or metaphyseal parts of 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
    • A61F2002/30108—Shapes
    • A61F2002/30199—Three-dimensional shapes
    • A61F2002/30224—Three-dimensional shapes cylindrical
    • A61F2002/30235—Three-dimensional shapes cylindrical tubular, e.g. sleeves
    • 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
    • A61F2002/30354—Cylindrically-shaped protrusion and recess, e.g. cylinder of circular basis
    • 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
    • A61F2002/30667—Features concerning an interaction with the environment or a particular use of the prosthesis
    • A61F2002/30673—Lubricating means, e.g. synovial pocket
    • 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
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
    • A61F2002/30884—Fins or wings, e.g. longitudinal wings for preventing rotation within the bone cavity
    • 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
    • A61F2002/3611—Heads or epiphyseal parts of femur
    • A61F2002/3621—Heads or epiphyseal parts of femur pierced with a longitudinal bore
    • 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
    • A61F2002/3631—Necks with an integral complete or partial peripheral collar or bearing shoulder at its base
    • 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
    • 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
    • A61F2002/3678—Geometrical features
    • A61F2002/368—Geometrical features with lateral apertures, bores, holes or openings, e.g. for reducing the mass, for receiving fixation screws or for communicating with the inside of a hollow shaft
    • 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
    • A61F2/46—Special tools for implanting artificial joints
    • A61F2/4603—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2002/4619—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof for extraction
    • 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
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063—Three-dimensional shapes
    • A61F2230/0069—Three-dimensional shapes cylindrical
    • 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
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00011—Metals or alloys
    • A61F2310/00029—Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium

Definitions

  • the joint head is spaced slightly from a collar of the shaft to permit compressing of the joint head by the collar upon the occurrence of shock loadings.
  • the joint head is lubricated through a channel at the upper end and through an internal spiral groove.
  • sliding elements made from an elastically compressible synthetic substance have been disposed in one of the elements, and preferably in the socket.
  • These sliding elements made, for example, as circular disks, have been sized to extend above the sliding surface of the socket in the unloaded condition, so that the two metal surfaces in that condition are held in spaced relation to one another.
  • the synthetic substance elements Upon loading of the joint, the synthetic substance elements become compressed, so that a portion of the weight is carried by the two metal areas of the ball and socket.
  • the purpose of this design is to ensure that body fluid, as a lubricant, may in the unloaded state be able to penetrate between the ball and the socket.
  • a further problem in the sue of hip joint prostheses results from the fact that during an operation to implant the prostheses the cut through the femur cannot be situated so exactly that the correct seat for the inserted prosthesis results right away.
  • the progress of the movement of the hip joint is in general very complex.
  • the movement is composed of a superposing of the so-called abduction and adduction, of extension and flexion, and of rotation inward and outward.
  • abduction and adduction the so-called abduction and adduction
  • extension and flexion the movement of extension and flexion
  • rotation inward and outward.
  • the difficulty of obtaining an exactly correct cut and of the complex progress of the movement have therefore led to other hip joint protheses becoming known.
  • such prostheses have been provided with a joint head which is rotatably mounted above a spacer ring on a pin carried by a shaft fastened into the femur.
  • a supplementary degree of freedom has been produced for the relative movement between the femur and the hip joint socket.
  • the invention provides a prostheses for use as a hip joint prosthesis which is constructed of a metal shaft, a synthetic spherical joint head, and a metal socket.
  • the metal shaft is formed with a shank which is, for examv ple, of curved contour and is sized to fit into a cut in a femur as well as with a pin which extends from the end of the shank to receive the synthetic spherical joint head thereon.
  • a collar is formed on the shaft at the end of the pin in slightly spaced relation to the base of the joint head so as to provide a support surface for the joint headshould the shaft be forced into the joint head under an excessive loading condition;
  • the joint head is formed with a recess to fit over the pin on the shaft and with a spherical outer surface to slidingly engage in the socket.
  • the joint head is thus supported-on face of the pin.
  • the pin which has a flat end face to support the joint head is provided with a radius of curvature at the comer of the transition from the flat end face to the peripheral surface of the pin which is made greater than the radius of curvature .of the corresponding transition in the joint head.
  • the radius of curvature at the pin corner amounts to 3 to 5 percent of the diameter of the pin end face, and the radius of curvature in the joint head amounts to 25 to 4 percent of the same diameter.
  • the pin comer radius of curvature is about one-third to one-half larger than the corresponding corner in the joint head.
  • the joint head is made of an elastically deformable material and is spaced from the collar of the shaft while a spacer ring is provided in the resulting space.
  • this spacer ring is made integrally with the joint head as a hollow cylindrical neck-line extension.
  • the pin is, in a sense, driven farther into the joint head causing the joint head to deform and to come into abutment with the collar.
  • the collar then acts as a supplemental support for the joint head so as to increase the area of support and thereby distribute the shock load over a greater area.
  • the additional friction associated with an increase of the sliding areas is avoided during normal loading while, on the other hand, the effective supporting area becomes increased during the shock loads.
  • the spherical joint head is provided with a channel which communicates the pin receiving recess with the exterior of the joint head adjacent the socket.
  • the lubrication of the prosthesis is substantially improved, because the pin during a relief of load draws body fluid in through the gap between the joint socket and the joint head and thence into the recess of the joint head, and during the following application of load forces the lubrication between the spherical surfaces of the socket and joint head that slide on one another.
  • the shaft and socket can advantageously be made of a chemically inert metallic material such as an alloy of cobalt, chromium and molybdenum, which for example has a composition'of 62% Co, 30% Cr, Mo, and which may in its remaining elements contain Ni, C, Si, Mn and Bor;
  • the material should have as high a quality index as possible, which by definition as is well known is the product of the breaking elongation and of the tensile strength and represents a measurement of the ability of the material to take work.
  • the joint head can advantageously be made of a physiologically unobjectionable suitable synthetic material such as polymethylene oxide, low-pressure polyethylene, isotactic polypropylene, vpolyphenylene oxide, and thermoplastic polyester. These synthetic substances are advantageously used in a highly crystalline form; that is, with a pronounced alignment of their molecular filaments. Through this there is obtained supplementary cohesion between the individual filaments, which substantially diminishes the tendency to flow.
  • the joint head can advantageously be machined by mechanical means from blocks of these synthetic substances.
  • the introduction of the shaft into the femur is considerably facilitated when the shaft that is to be fastened into the bone is made to taper at all sides.
  • the synthetic substance cement, flue or adhesive mass, methylmetacrylate for example which has previously been introduced into the cleaned out marrow hole can be forced out uniformly during the introduction of the shaft and thus creates no elastic resistance due to cushioning or buffering aggregates to the introduction of the shaft.
  • the introduction and correct positioning of the shaft is further considerably facilitated when the shaft has an eye at its outer end whose inner opening is made cylindrical and to a correct size, and which, looking from the shaft, is situated beyond the plane determined by the collar at the end of the joint head which annularly surrounds the pin.
  • This eye permits a suitably dimensioned hook of a drive-in instrument to be engaged therein with a snug fit.
  • the shaft and the instrument are then rigidly connected together for turning about an axis in the longitudinal direction of the femur, through which, through suitable turnings of the instrument, turnings can be transmitted without play to the shaft.
  • FIG. 1 illustrates an exploded view of a hip joint prosthesis ofthe invention
  • FIG. 2 illustrates the assembled condition of the prosthesis of FIG. 1
  • FIG. 3 illustrates a cross-sectional view of the joint head in the prosthesis of FIG. 1.
  • the hip joint prosthesis consists of the ball socket 1 of inert metallic material which is, for example, cemented with methylmethacrylate into a hip bone (not shown), a ball joint head 5 of physiologically unobjectionable elastically deformable synthetic material and an inert metallic shaft 9.
  • the socket 1 has the form of a thin almost spherical skull-caphaving a spherical inner surface 4 and is stiffened by ribs .2.
  • the ribs 2 serve, together with a rim-like flange 3, to increase the mechanical stability of the spherical inner surface 4 against distortions and elastic deformations, and to obtain a solid anchorage in the synthetic substance cement.
  • the inner surface 4 of the socket 1 receives a spherical surface 13 of the joint head 5.
  • the joint head 5 further cooperates with a spacer ring which is, for example, made integral with the head 5 as a hollow cylindrical neck-like extension 6.
  • the spherical surface 13 of the joint head 5 is approximately 0.1 to 0.3 mm less than that of the inner surface 4 of the socket l.
  • the shaft 9 is provided with a shank at the lower end which is to be secured in a femur, a pin 8 at the upper end and a collar 18 having a rim surface 17 between the shank and pin 8.
  • the pin 8, as shown, is cylindrical and is of smaller diameter than the collar 18 so as to provide a suitable seat for the joint head 5 as described below.
  • the joint head 5 is provided with a recess which has a flat end face 11 and which extends through the extension 6 to receive the pin 8 of the shaft 9.
  • the depth a of the recess 7 and the length b of the pin 8 are matched to one another in such a way that in the unloaded assembled state (FIG. 2), and also under normal loading, a small clearance 10 of some hundredths of a millimeter remains between the annular end surface 16 of the extension 6 and the corresponding rim surface 17 of the collar 18.
  • the joint head 5 therefore normally rests only on the end face 11 of the recess 7 and the corresponding end face 12 of the pin 8. Under extreme shock loads, the clearance 10 is overcome by the elasticity of the joint head 5, and the joint head 5 and its extension 6 become supported in a supplementary way on the rim surface 17 of the shaft collar 18.
  • the spherical joint head 5 is further provided with a channel 14 whichcommunicates the recess 7 with the spherical surface 13.
  • This channel serves as a suction channel for the pin 8 which acts in the manner of a piston type pump. That is, when the joint is relieved of load, the pin 8, via the channel 14, draws body fluid which acts as a lubricant between the surfaces 4, 13 and into the recess 7.
  • body fluid acts as a lubricant between the surfaces 4, 13 and into the recess 7.
  • a spiral groove 15 is formed in the side wall of the recess 7 of the joint head 5.
  • the body fluid which acts as the lubricant can thus penetrate into the spiral not only from the recess 7 but also from the clearance 10.
  • either the end face 16 of the extension 6, or the rim surface 17 of the collar 18, may be provided with small radial grooves (not shown). These grooves are particularly advantageous when for certain reasons the joint headS even under normal load is not supported on the flat and faces 11, 12, but on the annularsurfaces 16, 17.
  • the pin 8 is formed with a corner 22 at the transition from the flat end face 12 to the cylindrical peripheral surface 23 which has a radius R and the joint head 5 is formed with an opposed corner in the recess 7 which has a radius r of smaller size than the pin corner 22.
  • This difference in the radii of curvature avoids any high loading peaks that can occur under some circumstances.
  • the radius of curvature R is equal to from 3 to 5 percent of the diameter of the pin end face 12 while the radius of curvature r is equal to pin diameter of 16 millimeters
  • the pin corner 22 can have a radius R of 0.6 millimeters and the recess corner has a radius r of 0.5 millimeters.
  • the shank of the shaft 9 extends in a slightly curved form from the collar 18 and is tapered on all sides into a saber-tooth shape.
  • This shank is introduced into a femur, as is known, and is cemented in place, for example, by methylmetacrylate.
  • the shank should be inserted into the bone to a point as close as possible to the collar 18.
  • the shaft 9 is provided with an eye l9'which is located in a tongue like projection 20 on the shaft 9,
  • the eye 19 has a cylindrical calibrated inner delimitation and is situated with its center point 21 in the plane E-E defining the rim surface 17 annularly surrounding the pin 8.
  • the eye 19 serves to take a calibrated hook of an inserting instrument (not shown).
  • the hook is sized to engage with a snug fit in the calibrated eye 19.
  • the shaft 9 can in this way be introduced into the marrow hole of the bone, and so long as the synthetic substance cement has not yet hardened, can be aligned in the bone through turning of the instrument.
  • the eye 19 serves, together with the instrument, for the removal of the prosthesis from the femur in the event that this becomes necessary.
  • the shaft 9 and the socket l are made as a investment-casting from a Co-Cr-Mo alloy, whereby the sliding surfaces 4, 1a and 17, as well as the side flanks of the pin 8, can be polished in an after-treatment.
  • the joint head element 5, and in the event that the spacer ring is made in one piece with the joint head element 5, the extension 6, are made from a synthetic substance having the named characteristics, and are through mechanical processing brought into a suitable form.
  • the invention thus provides a hip joint prosthesis in which a synthetic ball joint head is caused to slide relative to a metal socket secured in a hip joint so that metal to metal contact is avoided.
  • the synthetic ball joint head by being made of an elastically deformable material and by being spaced slightly from a collar on its supporting shaft, allows the prosthesis to function under normal loadings with limited bearing areas so as to reduce friction and to function under shock loadings with increased bearing areas so as to distribute the loadings.
  • a hip joint prosthesis comprising a shaft of chemically inert metal alloy for insertion into a femur having a pin extending from one end thereof and a collar forming an annular rim surface, said pin having an end face thereon, and
  • said ball 'oint head has a recess receivin said pin including a flat end ace abutting said end face of sai pin and a corner opposite said corner of said pin and wherein said corner of said pin has a larger radius of curvature than said corner of said recess.
  • a hip joint prosthesis comprising a shaft of chemically inert metal alloy for insertion into a femur having a pin extending from one end thereof, and a spherical ball joint head of physiologically unobjectionable synthetic material movably mounted on said pin and having a spherical outer surface, a recess receiving said pin and a channel communicating said recess with said spherical outer surface whereby lubricant can flow from said outer surface into said channel and said recess upon longitudinal movement of said pin in said recess.

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  • 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)
US817654A 1968-04-25 1969-04-21 Hip joint prosthesis Expired - Lifetime US3658056A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH619768A CH490077A (de) 1968-04-25 1968-04-25 Hüftgelenk-Prothese

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US3658056A true US3658056A (en) 1972-04-25

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US817654A Expired - Lifetime US3658056A (en) 1968-04-25 1969-04-21 Hip joint prosthesis

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AT (1) AT284329B (de)
CH (1) CH490077A (de)
DE (1) DE1912630C3 (de)
ES (1) ES359759A1 (de)
FR (1) FR2006925A1 (de)
GB (1) GB1264857A (de)
SE (1) SE363233B (de)

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US3987499A (en) * 1973-08-10 1976-10-26 Sybron Corporation Surgical implant and method for its production
US4021865A (en) * 1974-08-29 1977-05-10 John Charnley Femoral prosthesis
US4031570A (en) * 1975-06-18 1977-06-28 Sulzer Brothers Limited Prosthetic acetabulum
US4032994A (en) * 1975-06-03 1977-07-05 Sulzer Brothers Limited Hip joint prosthesis
US4405249A (en) * 1980-03-28 1983-09-20 National Research Development Corporation Dispensing apparatus and method
US4551863A (en) * 1981-09-28 1985-11-12 Murray William M Femoral component and method
US4664668A (en) * 1984-04-14 1987-05-12 Howmedica International, Inc. Hip joint prosthesis
EP0310566A2 (de) * 1987-08-03 1989-04-05 G. CREMASCOLI S.p.A. Anpassbare Hüftprothese
US4838795A (en) * 1984-11-19 1989-06-13 Klaus Draenert Artificial joint components for teaching, research and visual aids
US4904268A (en) * 1988-09-12 1990-02-27 Alfredo Alvarado Prosthetic device
US5389107A (en) * 1992-05-11 1995-02-14 Antoine A. Nassar Shock absorbent prosthetic hip joint
US5405403A (en) * 1994-03-18 1995-04-11 Mikhail; W. E. Michael Femoral prosthesis with anti-rotation feature for ball
US5755811A (en) * 1995-08-25 1998-05-26 Zimmer, Inc. Prosthetic implant with fins
US5951605A (en) * 1996-07-01 1999-09-14 Rose Biomedical Research Method and apparatus for hip prosthesis
US5961555A (en) * 1998-03-17 1999-10-05 Huebner; Randall J. Modular shoulder prosthesis
WO2000040178A1 (en) * 1999-01-07 2000-07-13 Dirk Victor Vermeire Coupling means for femur prosthesis
US6290726B1 (en) 2000-01-30 2001-09-18 Diamicron, Inc. Prosthetic hip joint having sintered polycrystalline diamond compact articulation surfaces
US6398815B1 (en) 2000-01-30 2002-06-04 Diamicron, Inc. Prosthetic joint having at least one superhard articulation surface
US6410877B1 (en) 2000-01-30 2002-06-25 Diamicron, Inc. Methods for shaping and finishing prosthetic joint components including polycrystalline diamond compacts
US6425922B1 (en) 2000-01-30 2002-07-30 Diamicron, Inc. Prosthetic hip joint having at least one sintered polycrystalline diamond compact articulation surface
US6488715B1 (en) 2000-01-30 2002-12-03 Diamicron, Inc. Diamond-surfaced cup for use in a prosthetic joint
US6494913B1 (en) 1998-03-17 2002-12-17 Acumed, Inc. Shoulder prosthesis
US6494918B1 (en) 2000-01-30 2002-12-17 Diamicron, Inc. Component for a prosthetic joint having a diamond load bearing and articulation surface
US6596225B1 (en) 2000-01-31 2003-07-22 Diamicron, Inc. Methods for manufacturing a diamond prosthetic joint component
US20030191533A1 (en) * 2000-01-30 2003-10-09 Diamicron, Inc. Articulating diamond-surfaced spinal implants
US6676704B1 (en) 1994-08-12 2004-01-13 Diamicron, Inc. Prosthetic joint component having at least one sintered polycrystalline diamond compact articulation surface and substrate surface topographical features in said polycrystalline diamond compact
US6692529B2 (en) * 2001-09-27 2004-02-17 Mrugesh K. Shah Hip replacement system having fat lubricant
US6709463B1 (en) 2000-01-30 2004-03-23 Diamicron, Inc. Prosthetic joint component having at least one solid polycrystalline diamond component
US20040111162A1 (en) * 2002-12-05 2004-06-10 Southworth Carleton B. Apparatus and method for advancing synovial fluid in a prosthetic joint
US6793681B1 (en) 1994-08-12 2004-09-21 Diamicron, Inc. Prosthetic hip joint having a polycrystalline diamond articulation surface and a plurality of substrate layers
WO2005007038A1 (de) * 2003-07-22 2005-01-27 Synthes Gmbh Gelenkendoprothese
US20050075735A1 (en) * 2000-04-10 2005-04-07 Berelsman Brian K. Method and apparatus for adjusting height and angle for a radial head
US20050131546A1 (en) * 2003-12-15 2005-06-16 Amit Mor Replacement ligamentum teres femoris
US20050158200A1 (en) * 1994-08-12 2005-07-21 Diamicron, Inc. Use of CoCrMo to augment biocompatibility in polycrystalline diamond compacts
US20050165493A1 (en) * 2004-01-22 2005-07-28 Ries Michael D. Femoral hip prosthesis and method of implantation
US20060149389A1 (en) * 2003-02-14 2006-07-06 Sergio Romagnoli Corrective element for the articulation between the femur and the pelvis
US20060229725A1 (en) * 2003-07-22 2006-10-12 Beat Lechmann Intervertebral implant comprising dome-shaped joint surfaces
US20070088443A1 (en) * 2001-08-27 2007-04-19 Hanssen Arlen D Prosthetic implant support structure
US20080114461A1 (en) * 2006-11-13 2008-05-15 Howmedica Osteonics Corp. Modular humeral head
US7396501B2 (en) 1994-08-12 2008-07-08 Diamicron, Inc. Use of gradient layers and stress modifiers to fabricate composite constructs
US20080195220A1 (en) * 2000-01-30 2008-08-14 Diamicron, Inc. Prosthetic hip joint having polycrystalline diamond articulation surfaces and at least one solid polycrystalline diamond compact
US20100241236A1 (en) * 2000-04-10 2010-09-23 Biomet Manufacturing Corp. Modular Radial Head Prosthesis
US20110009974A1 (en) * 2001-08-27 2011-01-13 Zimmer Technology, Inc. Tibial augments for use with knee joint prostheses, method of implanting the tibial augment, and associated tools
WO2011005197A1 (en) * 2009-07-10 2011-01-13 Milux Holding S.A. Hip joint device and method
US20110112651A1 (en) * 2001-08-27 2011-05-12 Zimmer, Inc. Femoral augments for use with knee joint prosthesis
US20120239160A1 (en) * 2009-05-07 2012-09-20 Smith & Nephew, Inc. Modular trial heads for a prosthetic
CN102781372A (zh) * 2009-07-10 2012-11-14 米卢克斯控股股份有限公司 髋关节装置和方法
USD684693S1 (en) * 2002-08-22 2013-06-18 Zimmer, Inc. Prosthetic implant support structure
US20130204390A1 (en) * 2006-12-07 2013-08-08 Ihip Surgical, Llc Method and apparatus for attachment in a modular hip replacement or fracture fixation device
US8535382B2 (en) 2000-04-10 2013-09-17 Biomet Manufacturing, Llc Modular radial head prostheses
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US9237949B2 (en) 2006-12-07 2016-01-19 Ihip Surgical, Llc Method and apparatus for hip replacement
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Cited By (125)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3925824A (en) * 1972-11-16 1975-12-16 Nat Res Dev Endoprosthetic bone joint devices
US3987499A (en) * 1973-08-10 1976-10-26 Sybron Corporation Surgical implant and method for its production
US4021865A (en) * 1974-08-29 1977-05-10 John Charnley Femoral prosthesis
US3918441A (en) * 1974-09-17 1975-11-11 Philip E Getscher Intramedullary hip pin
US4032994A (en) * 1975-06-03 1977-07-05 Sulzer Brothers Limited Hip joint prosthesis
US4031570A (en) * 1975-06-18 1977-06-28 Sulzer Brothers Limited Prosthetic acetabulum
US4405249A (en) * 1980-03-28 1983-09-20 National Research Development Corporation Dispensing apparatus and method
US4551863A (en) * 1981-09-28 1985-11-12 Murray William M Femoral component and method
US4664668A (en) * 1984-04-14 1987-05-12 Howmedica International, Inc. Hip joint prosthesis
US4838795A (en) * 1984-11-19 1989-06-13 Klaus Draenert Artificial joint components for teaching, research and visual aids
EP0310566A2 (de) * 1987-08-03 1989-04-05 G. CREMASCOLI S.p.A. Anpassbare Hüftprothese
EP0310566A3 (en) * 1987-08-03 1989-12-20 G. Cremascoli S.P.A. Adaptable hip prosthesis
US4904268A (en) * 1988-09-12 1990-02-27 Alfredo Alvarado Prosthetic device
US5389107A (en) * 1992-05-11 1995-02-14 Antoine A. Nassar Shock absorbent prosthetic hip joint
US5405403A (en) * 1994-03-18 1995-04-11 Mikhail; W. E. Michael Femoral prosthesis with anti-rotation feature for ball
US6793681B1 (en) 1994-08-12 2004-09-21 Diamicron, Inc. Prosthetic hip joint having a polycrystalline diamond articulation surface and a plurality of substrate layers
US6676704B1 (en) 1994-08-12 2004-01-13 Diamicron, Inc. Prosthetic joint component having at least one sintered polycrystalline diamond compact articulation surface and substrate surface topographical features in said polycrystalline diamond compact
US6800095B1 (en) 1994-08-12 2004-10-05 Diamicron, Inc. Diamond-surfaced femoral head for use in a prosthetic joint
US20050158200A1 (en) * 1994-08-12 2005-07-21 Diamicron, Inc. Use of CoCrMo to augment biocompatibility in polycrystalline diamond compacts
US7077867B1 (en) 1994-08-12 2006-07-18 Diamicron, Inc. Prosthetic knee joint having at least one diamond articulation surface
US7396501B2 (en) 1994-08-12 2008-07-08 Diamicron, Inc. Use of gradient layers and stress modifiers to fabricate composite constructs
US7396505B2 (en) 1994-08-12 2008-07-08 Diamicron, Inc. Use of CoCrMo to augment biocompatibility in polycrystalline diamond compacts
US5755811A (en) * 1995-08-25 1998-05-26 Zimmer, Inc. Prosthetic implant with fins
US5951605A (en) * 1996-07-01 1999-09-14 Rose Biomedical Research Method and apparatus for hip prosthesis
US6102953A (en) * 1998-03-17 2000-08-15 Acumed, Inc. Shoulder prosthesis
US7918892B2 (en) 1998-03-17 2011-04-05 Acumed Llc Shoulder prosthesis
US20110196491A1 (en) * 1998-03-17 2011-08-11 Acumed Llc Bone prosthesis
US20080306600A1 (en) * 1998-03-17 2008-12-11 Huebner Randall J Shoulder prosthesis
US6193758B1 (en) 1998-03-17 2001-02-27 Acumed, Inc. Shoulder prosthesis
US6494913B1 (en) 1998-03-17 2002-12-17 Acumed, Inc. Shoulder prosthesis
US7297163B2 (en) 1998-03-17 2007-11-20 Acumed Llc Shoulder prosthesis
US6168628B1 (en) 1998-03-17 2001-01-02 Acumed, Inc. Shoulder Prosthesis
US6168627B1 (en) 1998-03-17 2001-01-02 Acumed, Inc. Shoulder prosthesis
US5961555A (en) * 1998-03-17 1999-10-05 Huebner; Randall J. Modular shoulder prosthesis
BE1012379A5 (nl) * 1999-01-07 2000-10-03 Vermeire Dirk Victor Koppeling voor femurprothese.
WO2000040178A1 (en) * 1999-01-07 2000-07-13 Dirk Victor Vermeire Coupling means for femur prosthesis
US7494507B2 (en) 2000-01-30 2009-02-24 Diamicron, Inc. Articulating diamond-surfaced spinal implants
US6398815B1 (en) 2000-01-30 2002-06-04 Diamicron, Inc. Prosthetic joint having at least one superhard articulation surface
US6290726B1 (en) 2000-01-30 2001-09-18 Diamicron, Inc. Prosthetic hip joint having sintered polycrystalline diamond compact articulation surfaces
US6709463B1 (en) 2000-01-30 2004-03-23 Diamicron, Inc. Prosthetic joint component having at least one solid polycrystalline diamond component
US20030191533A1 (en) * 2000-01-30 2003-10-09 Diamicron, Inc. Articulating diamond-surfaced spinal implants
US6610095B1 (en) 2000-01-30 2003-08-26 Diamicron, Inc. Prosthetic joint having substrate surface topographical featurers and at least one diamond articulation surface
US6488715B1 (en) 2000-01-30 2002-12-03 Diamicron, Inc. Diamond-surfaced cup for use in a prosthetic joint
US6494918B1 (en) 2000-01-30 2002-12-17 Diamicron, Inc. Component for a prosthetic joint having a diamond load bearing and articulation surface
US6402787B1 (en) 2000-01-30 2002-06-11 Bill J. Pope Prosthetic hip joint having at least one sintered polycrystalline diamond compact articulation surface and substrate surface topographical features in said polycrystalline diamond compact
US6410877B1 (en) 2000-01-30 2002-06-25 Diamicron, Inc. Methods for shaping and finishing prosthetic joint components including polycrystalline diamond compacts
US6517583B1 (en) 2000-01-30 2003-02-11 Diamicron, Inc. Prosthetic hip joint having a polycrystalline diamond compact articulation surface and a counter bearing surface
US20080215158A1 (en) * 2000-01-30 2008-09-04 Diamicron, Inc. Prosthetic hip joint having polycrystalline diamond articulation surfaces and at least one solid polycrystalline diamond compact
US20080195220A1 (en) * 2000-01-30 2008-08-14 Diamicron, Inc. Prosthetic hip joint having polycrystalline diamond articulation surfaces and at least one solid polycrystalline diamond compact
US6497727B1 (en) 2000-01-30 2002-12-24 Diamicron, Inc. Component for use in prosthetic hip, the component having a polycrystalline diamond articulation surface and a plurality of substrate layers
US6425922B1 (en) 2000-01-30 2002-07-30 Diamicron, Inc. Prosthetic hip joint having at least one sintered polycrystalline diamond compact articulation surface
US6596225B1 (en) 2000-01-31 2003-07-22 Diamicron, Inc. Methods for manufacturing a diamond prosthetic joint component
US20110125276A1 (en) * 2000-04-10 2011-05-26 Biomet Manufacturing Corp. Modular prosthesis and use thereof for replacing a radial head
US20100030339A1 (en) * 2000-04-10 2010-02-04 Biomet Manufacturing Corp. Method and apparatus for adjusting height and angle for a radial head
US9333084B2 (en) 2000-04-10 2016-05-10 Biomet Manufacturing, Llc Modular prosthesis and use thereof for replacing a radial head
US9439784B2 (en) 2000-04-10 2016-09-13 Biomet Manufacturing, Llc Modular radial head prosthesis
US8920509B2 (en) 2000-04-10 2014-12-30 Biomet Manufacturing, Llc Modular radial head prosthesis
US9579208B2 (en) 2000-04-10 2017-02-28 Biomet Manufacturing, Llc Modular radial head prosthesis
US8535382B2 (en) 2000-04-10 2013-09-17 Biomet Manufacturing, Llc Modular radial head prostheses
US8425615B2 (en) 2000-04-10 2013-04-23 Biomet Manufacturing Corp. Method and apparatus for adjusting height and angle for a radial head
US8366781B2 (en) 2000-04-10 2013-02-05 Biomet Manufacturing Corp. Modular prosthesis and use thereof for replacing a radial head
US8114163B2 (en) 2000-04-10 2012-02-14 Biomet Manufacturing Corp. Method and apparatus for adjusting height and angle for a radial head
US20050075735A1 (en) * 2000-04-10 2005-04-07 Berelsman Brian K. Method and apparatus for adjusting height and angle for a radial head
US8110005B2 (en) 2000-04-10 2012-02-07 Biomet Manufacturing Corp. Modular prosthesis and use thereof for replacing a radial head
US20110144759A1 (en) * 2000-04-10 2011-06-16 Biomet Manufacturing Corp. Modular prosthesis and use thereof for replacing a radial head
US20100312349A1 (en) * 2000-04-10 2010-12-09 Biomet Manufacturing Corp. Modular prosthesis and use thereof for replacing a radial head
US20100262252A1 (en) * 2000-04-10 2010-10-14 Biomet Manufacturing Corp. Modular prosthesis and use thereof for replacing a radial head
US20100241236A1 (en) * 2000-04-10 2010-09-23 Biomet Manufacturing Corp. Modular Radial Head Prosthesis
US10653526B2 (en) 2001-08-27 2020-05-19 Zimmer, Inc. Prosthetic implant support structure
US20110112651A1 (en) * 2001-08-27 2011-05-12 Zimmer, Inc. Femoral augments for use with knee joint prosthesis
US9907664B2 (en) 2001-08-27 2018-03-06 Zimmer, Inc. Methods for augmenting a tibial component of a knee joint prosthesis
US20070088443A1 (en) * 2001-08-27 2007-04-19 Hanssen Arlen D Prosthetic implant support structure
US10201426B2 (en) 2001-08-27 2019-02-12 Zimmer, Inc. Prosthetic implant support structure
US10646346B2 (en) 2001-08-27 2020-05-12 Zimmer, Inc. Prosthetic implant support structure
US9265614B2 (en) 2001-08-27 2016-02-23 Zimmer, Inc. Method of implanting the tibial augment
US10806587B2 (en) 2001-08-27 2020-10-20 Zimmer, Inc. Prosthetic implant support structure
US10893947B2 (en) 2001-08-27 2021-01-19 Zimmer, Inc. Femoral augments for use with knee joint prosthesis
US20110009974A1 (en) * 2001-08-27 2011-01-13 Zimmer Technology, Inc. Tibial augments for use with knee joint prostheses, method of implanting the tibial augment, and associated tools
US10098743B2 (en) 2001-08-27 2018-10-16 Zimmer, Inc. Prosthetic implant support structure
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US9044326B2 (en) 2001-08-27 2015-06-02 Zimmer, Inc. Femoral augments for use with knee joint prosthesis
US10085841B2 (en) 2001-08-27 2018-10-02 Zimmer, Inc. Femoral implant systems
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AT284329B (de) 1970-09-10
ES359759A1 (es) 1970-07-01
DE1912630C3 (de) 1973-10-04
FR2006925A1 (de) 1970-01-02
DE1912630B2 (de) 1973-03-08
DE1912630A1 (de) 1969-10-30
GB1264857A (de) 1972-02-23
CH490077A (de) 1970-05-15
SE363233B (de) 1974-01-14

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