CN113440315B - Acetabular bone defect block and hip joint replacement system - Google Patents
Acetabular bone defect block and hip joint replacement system Download PDFInfo
- Publication number
- CN113440315B CN113440315B CN202010299203.0A CN202010299203A CN113440315B CN 113440315 B CN113440315 B CN 113440315B CN 202010299203 A CN202010299203 A CN 202010299203A CN 113440315 B CN113440315 B CN 113440315B
- Authority
- CN
- China
- Prior art keywords
- acetabular
- defect block
- bone defect
- acetabular bone
- bone
- 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.)
- Active
Links
- 230000007547 defect Effects 0.000 title claims abstract description 272
- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 227
- 210000004394 hip joint Anatomy 0.000 title abstract description 15
- 239000002639 bone cement Substances 0.000 claims description 45
- 210000000588 acetabulum Anatomy 0.000 claims description 24
- 230000007704 transition Effects 0.000 claims description 12
- 230000007423 decrease Effects 0.000 claims description 3
- 238000011540 hip replacement Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 29
- 238000002513 implantation Methods 0.000 abstract description 9
- 206010065687 Bone loss Diseases 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 3
- 230000006978 adaptation Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000008468 bone growth Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 208000010392 Bone Fractures Diseases 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 206010066251 Bone contusion Diseases 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002980 postoperative effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 241000258957 Asteroidea Species 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
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
- A61F2/46—Special tools for implanting artificial joints
- A61F2/4601—Special tools for implanting artificial joints for introducing bone substitute, for implanting bone graft implants or for compacting them in 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
- A61F2/30767—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
-
- 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
- A61F2/34—Acetabular cups
-
- 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
-
- 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
- A61F2/4609—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof of acetabular cups
-
- 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
-
- 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
- A61F2002/30772—Apertures or holes, e.g. of circular cross section
- A61F2002/30784—Plurality of holes
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Transplantation (AREA)
- Vascular Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physical Education & Sports Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention provides an acetabular bone defect block and a hip joint replacement system, the acetabular bone defect block comprises a defect block body (1), the defect block body (1) comprises an inner surface (2) and an outer surface (3) which are protruded towards the same direction, the inner surface (2) is matched with the outer surface of an acetabular cup, the outer surface (3) is matched with the acetabular bone defect surface, and the inner surface and the outer surface are independently surfaces which are more than half of an arc surface. The acetabular bone defect block provided by the invention can reduce the bone loss during implantation, can be automatically matched with an acetabular cup or an acetabular cup test mold during operation, is convenient for implantation operation and installation, greatly reduces the operation difficulty, saves the operation time, has strong adhesion with an acetabular bone defect nest and an acetabular cup, and better maintains the stability of an implanted prosthesis.
Description
Technical Field
The invention belongs to the technical field of prostheses implanted into acetabulum, and particularly relates to an acetabular bone defect block and a hip joint replacement system.
Background
In hip joint surgery, cases with large-area defects in the acetabular part are frequently encountered, and as the acetabular prosthesis needs multi-point support of surrounding bones to obtain initial stability, the reconstruction of the acetabular bone defects is a precondition of long-term stability of the acetabular prosthesis, and the acetabular bone defects are the parts of difficult treatment, long time consumption, more bleeding and high cost in the primary or revision of the hip joint of the patient.
For the treatment of large-area defects of acetabular bones, the traditional solution is to use larger acetabular cups or use reinforcing systems on the acetabular side to fill the defects by adding bone cement, but when the former solution is used, the larger acetabular cups are needed to be used for the larger defects, so that a lot of acetabular bones need to be ground off during operation, thereby being unfavorable for the recovery of hip joints, and when the latter solution is used, the reinforcing systems on the acetabular side are added by adding bone cement to fill the defects, the defects are often unstable to be fixed on the acetabulum, and hip joint revision operations in a short period are easy to cause.
Aiming at the defects of the traditional treatment method, an acetabular bone defect block product for filling the acetabular bone defect, which is a quarter spherical block in particular, is present on the market, but can only be applied to the acetabular rim part, if the product is applied to the inner side of the acetabulum, at least two products need to be combined, the product is not easy to fix in the acetabular fossa, and in addition, the operation of implanting the product into the acetabular fossa by using an instrument is complex. Thus, the prior methods of operation in the art are complex to operate, the prior products are not easily secured within the acetabular fossa, and more bone mass is lost due to the implantation of the prosthesis.
Disclosure of Invention
The invention provides an acetabular bone defect block and an acetabular joint replacement system, which are simple to operate, can automatically adapt to an acetabular cup to facilitate installation, have good fit with an acetabular defect nest and the acetabular cup, can reduce bone loss during implantation and have strong universality.
The technical scheme of the invention is as follows:
An acetabular bone defect block comprises a defect block body, wherein the defect block body comprises an inner surface and an outer surface which are projected towards the same direction, the inner surface is suitable for the outer surface of an acetabular cup, the outer surface is suitable for the acetabular bone defect surface, and the inner surface and the outer surface are independently planes which are more than half of an arc surface.
Further, the outer surface comprises a central cambered surface and an outer annular surface surrounding the central cambered surface, the central cambered surface is matched with the outer surface of the acetabulum, the outer annular surface is a cambered surface, and the outer annular surface is matched with the bone surface at the joint position of the acetabulum defect.
Further, the inner surface and the outer surface are independently cambered surfaces, preferably circular arc surfaces, the outer surface is preferably hemispherical, and the inner surface coincides with the central axis of the outer surface.
Further, the difference between the diameter of the ball where the outer surface is located and the diameter of the ball where the inner surface is located is not more than 4mm, and the distance between the inner surface and the outer surface is not more than 20mm.
Further, the thickness of the defect block body gradually decreases from the center of the cambered surface to the edge.
Further, the inner and outer surface edges are connected by a transition section, preferably a circular arc section.
Further, the defect block body comprises a body layer and a jointing layer covering the outer surface side of the body layer.
Further, the defect block body is provided with a through hole extending from the inner surface to the outer surface, and the outer surface of the defect block body passes through at least one through hole through a fastener to be fixedly connected with the acetabulum.
Further, the through holes are uniformly distributed on the defect block body.
Further, at least one of the through holes is adapted to an acetabular cup mounting hole, and a fastener passes through the through hole and the acetabular cup mounting hole to fixedly connect the defect block body with the acetabular cup.
Further, the inner surface is provided with a bone cement fixation structure, and/or,
The edge of the defect block body is provided with a plurality of avoidance grooves.
Further, the bone cement fixing structure is a bone cement groove which is uniformly distributed on the inner surface and has a plurality of identical depths.
Preferably, the bone cement grooves are communicated through a connecting groove.
According to the acetabular bone defect block and the acetabular joint replacement system, the cambered surfaces of the inner surface and the outer surface in the acetabular bone defect block are arranged and are respectively matched with the outer surface of the acetabular cup and the acetabular bone defect surface, the inner surface and the outer surface are independently surfaces which are more than half of the cambered surfaces, the bone loss amount during operation is small, automatic adaptation of the acetabular bone defect block or the acetabular bone defect block test mould and the acetabular cup or the acetabular cup test mould can be ensured, the overturning risk is small during adaptation, the acetabular bone defect block or the acetabular bone defect block test mould can be firmly fixed at an acetabular defect part, compared with artificial mark adaptation of a traditional operation method, the operation and the difficulty are greatly simplified, the combination of the acetabular bone defect block and the fixation required by the combination are avoided, the acetabular bone defect block is particularly suitable for inner side defect of an acetabulum, and in addition, the acetabular bone defect block and the acetabular cup are conveniently implanted into the acetabulum after being combined.
According to the acetabular bone defect block and the acetabular joint replacement system, the acetabular bone defect block is directly filled in the acetabular bone defect position, so that stability of the acetabular bone defect block can be ensured, stability of an implanted acetabular cup can be ensured, namely the implanted acetabular bone defect block can be stably positioned in the acetabular bone defect position, and the implanted acetabular cup can be stably positioned in an acetabular fossa.
According to the acetabular bone defect block and the acetabular joint replacement system, the outer surface of the acetabular bone defect block is matched with the acetabular bone defect surface, a defect block with a proper model can be selected according to the size of the acetabular bone defect, the acetabular bone defect block has high universality, the bone loss of a patient during operation is small, the difference between the diameter of a sphere where the extrados of the acetabular bone defect block is located and the diameter of a sphere where the intrados is located is not larger than 4mm, and the bone loss is minimum.
According to the acetabular bone defect block and the acetabular joint replacement system, the edge of the inner surface and the edge of the outer surface can be connected through the transition section, so that the acetabular bone defect block can be conveniently implanted without interference with an acetabular bone or an acetabular cup.
According to the acetabular bone defect block and the hip joint replacement system provided by the invention, the joint layer is contacted with the surface of the acetabular bone defect, so that biological bone ingrowth or bone growth is facilitated.
According to the acetabular bone defect block and the acetabular joint replacement system, the defect block body is provided with the through holes, so that a fastener can penetrate through the through holes to fixedly connect the acetabular bone defect block with an acetabulum, and bone cement can be conveniently injected between the defect block and an acetabular cup.
According to the acetabular bone defect block and the acetabular joint replacement system, bone cement can be filled in the bone cement grooves on the inner surface, so that the acetabular bone defect block and the acetabular cup are combined and fastened, alignment of the mounting holes of the acetabular cup and the through holes formed in the acetabular bone defect block and corresponding operation are avoided, and the bone cement grooves are communicated through the connecting grooves, so that bone cement is distributed uniformly.
The design of the avoiding groove in the acetabular bone defect block and the hip joint replacement system is beneficial to avoiding the influence of the defect block on the fixation of the acetabular cup.
Drawings
FIG. 1 is a perspective view of a first version of an acetabular bone defect block provided by one embodiment of the invention;
FIG. 2 is a top view of a first version of an acetabular bone defect block according to one embodiment of the invention;
FIG. 3 is a cross-sectional view of a first version of an acetabular bone defect block according to one embodiment of the invention;
FIG. 4 is a perspective view of a first version of an acetabular bone defect block provided by one embodiment of the invention;
FIG. 5 is a top view of a second version of an acetabular bone defect block according to one embodiment of the invention;
FIG. 6 is a right side view of a second version of an acetabular bone defect block according to one embodiment of the invention;
FIG. 7 is a left side view of a second version of an acetabular bone defect block according to one embodiment of the invention;
fig. 8 is a top view of a third version of an acetabular bone defect block according to one embodiment of the invention.
Fig. 9 is a side view of a third version of an acetabular bone defect block according to one embodiment of the invention.
FIG. 10 is a schematic representation of the superposition of two acetabular bone defect blocks according to one embodiment of the invention;
fig. 11 is an X-ray image of two acetabular bone defect blocks superimposed implanted into an acetabulum in accordance with one embodiment of the invention.
The bone cement bone fracture plate comprises a defect block body 1, an inner surface, an outer surface, a central cambered surface 31, a central cambered surface 32, an outer annular surface 4, a bone cement fixing structure 5, an arc section 6, a through hole 7, a body layer 8, a joint layer 9, a first type of acetabular bone defect block 10, a second type of acetabular bone defect block 11 and an avoidance groove.
Detailed Description
The present invention will be described in detail below with reference to the drawings and examples:
1-4, an acetabular bone defect block comprises a defect block body 1, wherein the defect block body 1 comprises an inner surface 2 and an outer surface 3 which are projected towards the same direction, the inner surface 2 is matched with the outer surface of an acetabular cup, the outer surface 3 is matched with the defect surface of the acetabular bone, and the inner surface and the outer surface are independently planes which are more than half of an arc surface.
The half surface of the cambered surface means that the surface passing through the center of the cambered surface cuts the cambered surface into two identical parts, and one part is half of the cambered surface. The cambered surface center refers to the center of the sphere where the cambered surface is located.
The acetabular bone defect block can be any shape from more than half of the cambered surface to the whole cambered surface, for example, the acetabular bone defect block can be a surface (passing the cambered surface center and dividing the cambered surface into the same three parts, wherein two parts are the surfaces of the cambered surface 2/3), a surface (passing the cambered surface center and dividing the cambered surface into the same four parts, wherein the three parts are the surfaces of the cambered surface 3/4), a surface (passing the cambered surface center and dividing the cambered surface into the same six parts, wherein five parts are the surfaces of the cambered surface 5/6) or the whole cambered surface and the like, which are more than half of the cambered surface to the whole cambered surface. Further, the inner surface 2 and the outer surface 3 can independently adopt an approximate hemispherical structure, an approximate 1/3 spherical structure, an approximate 3/8 spherical structure (as shown in fig. 5, 6 and 7), an approximate 3/7 spherical structure, and the like, so that the invention is suitable for acetabular bone defects with different shapes. In addition, the shape of the inner surface 2 and the shape of the outer surface 3 can be different, if the outer surface 3 adopts an approximate hemispherical structure, the inner surface 2 can be adjusted according to the outer surface of the acetabulum, and a spherical structure with an approximate 1/3 spherical surface or an approximate 2/5 spherical surface equal proportion is adopted, so that the inner surface 2 is matched with the outer surface of the acetabular cup, and the outer surface 3 is matched with the defect surface of the acetabular bone.
To be suitable for the case where an acetabular bone defect penetrates an acetabular fossa, as shown in fig. 4, the outer surface 3 may include a central cambered surface 31 and an outer annular surface 32 surrounding the central cambered surface, the central cambered surface 31 being adapted to the acetabular outer surface, the outer annular surface 32 being a cambered surface, the outer annular surface 32 being adapted to the bone surface at the junction of the acetabular defect.
The outer surface 3 of the acetabular bone defect block is suitable for most of acetabular bone defects, the amount of bone lost by grinding is small in use, the acetabular bone defect block can be suitable for acetabular bone defects with different areas and shapes, the inner surface 2 is suitable for the outer surface of an acetabular cup and the inner surface of an acetabulum, the outer surface 3 is suitable for the surface of the acetabular bone defect, and the acetabular bone defect block and the acetabular cup are convenient to fix in an acetabular fossa.
The inner surface of the acetabulum is the inner surface of the acetabular fossa, namely the surface contacted with or opposite to the acetabular cup, and the outer surface of the acetabulum is the outer surface of the acetabular fossa.
The design of the cambered surfaces of the inner surface and the outer surface, the adaptation with the outer surface of the acetabular cup and the defect surface of the acetabular bone respectively and the fact that the inner surface and the outer surface are respectively more than half of the cambered surfaces can ensure that the acetabular bone defect block is automatically adapted to the acetabular cup or the acetabular cup test mold when the acetabular cup or the acetabular cup test mold is driven into the acetabulum (before the acetabular cup or the acetabular cup test mold is driven into the acetabulum, one side of the acetabular bone defect block possibly protrudes out of the acetabular bone defect due to the design of the outer surface of the acetabular bone defect block, and an acting force is applied to the acetabular bone defect block when the acetabular cup or the acetabular cup test mold is driven into the acetabular bone defect block, so that the acetabular bone defect block is automatically attached to the acetabular bone defect block and the outer surface of the acetabular cup), the combination of the acetabular bone defect block is avoided, the operation difficulty and the operation time are simplified.
Preferably, the outer surface and the inner surface are arc surfaces protruding towards the same direction, and the axes of the inner surface and the outer surface coincide, and most preferably, the outer surface is hemispherical (as shown in fig. 1 to 4). When the surface of the acetabular bone defect is not spherical defect, a small amount of bone can be removed from the acetabular bone defect by using the acetabular bone contusion to form the spherical defect suitable for implantation, the bone loss is small, and the acetabular bone fracture can be completed by using the conventional acetabular bone contusion, so that the acetabular bone fracture is simple to operate and high in universality. The outer surface and the inner surface are arc surfaces protruding towards the same direction, the automatic adaptation effect of the acetabular bone defect block and the acetabular cup is best when the axes of the inner surface and the outer surface are coincident, and compared with the acetabular bone defect block of which the inner surface and the outer surface are independently between more than half of an arc surface and the whole arc surface (excluding the whole arc surface), the acetabular bone defect block can avoid the risk of overturning the acetabular bone defect block and the defect that the acetabular bone defect block is not easy to be firmly fixed on the bone surface when the acetabular cup or the acetabular cup test mold is injected; in addition, when the outer surface and the inner surface of the acetabular bone defect block are arc surfaces protruding towards the same direction and the axes of the inner surface and the outer surface are coincident, the defect block and an acetabular cup cavity are manufactured, the relative positions of the defect block and the acetabular cup are determined through a test mold, after the test mold is replaced by a prosthesis, the position of the defect block can be accurately found, the defect block is buckled on the surface of the acetabular cup, bone cement can be injected into the position of the joint surface of the acetabular cup and the defect block through the hole of the defect block, and the combination of the defect block and the acetabular cup can be easily driven into the manufactured cavity because of no overturning risk of buckling, the implantation of the acetabular cup and the defect block is completed, and the stability of operation is strong.
The acetabular bone defect block and the defect block refer to the same.
Furthermore, in order to further reduce the grinding of the acetabular bone and improve the universality of the acetabular bone defect block, the invention can be designed into different size models, can be suitable for the acetabular bone defect with larger area, can be suitable for the local acetabular bone defect with smaller area, can also be used for the acetabular bone defect penetrating the acetabular fossa, has stronger universality, but is preferably used for the acetabular bone defect with smaller area.
As a preferable technical scheme, the difference between the diameter of the ball where the outer arc surface (i.e. the outer surface 3) is located and the diameter of the ball where the inner arc surface (i.e. the inner surface 2) is located is not more than 4mm, for example, 1mm, 2mm, 2.3mm, 3.5mm or 3.8mm can be adopted. The diameter difference can ensure that the bone mass loss at the position of the acetabular bone defect is minimized within the range.
The acetabular bone defect block has a distance (i.e., defect block thickness) between the inner surface 2 and the outer surface 3 of no greater than 20mm, such as 5mm, 8mm, 12mm, 15mm, 18mm, 19.5mm, or the like. Preferably, the thickness of the defect block body gradually decreases from the center to the edge of the cambered surface. Namely, the thick edge in the middle of the acetabular bone defect block is thin, the design is convenient for filling the acetabular defect, ensures that the outer surface is attached to the acetabular bone defect surface, the inner surface is attached to the outer surface of the acetabular cup, and is convenient for automatic adaptation of the acetabular bone defect block and the outer surface of the acetabular cup.
As a preferable technical scheme, the diameter range of the sphere where the outer arc surface (namely the outer surface 3) of the acetabular bone defect block is positioned is 4.0cm-7.0cm, such as 4.2cm, 4.5cm, 5.8cm, 6.0cm, 6.2cm or 6.7cm, and the diameter range can be adjusted according to the needs of a person skilled in the art.
Further, the edge of the inner surface and the edge of the outer surface can be directly connected, but the connection part is relatively sharp when the inner surface and the outer surface are directly connected, so that the inner surface and the outer surface are connected through a transition section, and the transition section is preferably an arc section for facilitating postoperative recovery of a patient. The transition section serves to connect the edges of the inner and outer surfaces such that the edges of the inner surface smoothly transition to the edges of the outer surface. It should be appreciated by those skilled in the art that the size of the transition section should be significantly smaller than the size of the inner or outer surface, e.g., the area of the transition section is significantly smaller than the inner or outer surface area, e.g., the area of the transition section may be 1/100-1/10, such as 1/10, 1/20, 1/50, or 1/80, etc. of the inner or outer surface area. As shown in fig. 1 to 3, the edge of the inner surface 2 and the edge of the outer surface 3 are connected through an arc section 5, so that the novel acetabulum bone implant is conveniently implanted in any acetabular bone defect position, does not interfere with an acetabular bone and an acetabular cup, and is beneficial to postoperative recovery. The thickness of the transition section preferably ranges from 1.5mm to 2.5 mm mm, such as 1.8mm, 2.0mm, 2.2mm, or 2.4mm, etc.
Further, as shown in fig. 3, the defect block body 1 includes a body layer 7 and a bonding layer 8 covering the outer surface 3 side of the body layer 7, the bonding layer 8 contacts with the surface of the acetabular bone defect, the bonding layer 8 is a porous surface or a coating surface, and a material which is convenient for bone ingrowth is adopted, so that biological bone ingrowth or bone growth is facilitated. The body layer 7 is made of a material implantable in a human body. Preferably, the bonding layer 8 is made of titanium alloy or hydroxyapatite or tantalum metal bone trabeculae, and the body layer 7 is made of titanium alloy. Further, the thickness of the joining layer 8 is 250 μm to 1500 μm, such as 280 μm, 300 μm, 500 μm, 800 μm, 1000 μm or 1200 μm, etc., within this thickness range, which is advantageous for biological bone ingrowth or bone growth.
Further, the defect block body 1 is provided with a through hole 6 extending from the inner surface 2 to the outer surface 3, the outer surface 3 of the defect block body 1 passes through at least one through hole 6 through a fastener to be fixedly connected with the acetabulum, and the through hole 6 is also used for injecting bone cement between the inner surface of the acetabular bone defect block and the outer surface of the acetabular cup. In order to facilitate the fixation of the acetabular cup, the acetabular bone defect block and the acetabulum, a plurality of avoiding grooves 11 can be formed at the edge of the acetabular bone defect block, namely, the acetabular bone defect block is in a starfish shape (as shown in fig. 8-9). The through holes 6 may be provided as screw holes or light holes. During installation, the acetabular screw of the standard acetabular cup can be used for penetrating through the through hole 6 and the acetabulum to fix the defect block body 1 on the bone surface of the acetabular bone defect position, and the fastener adopts the acetabular screw to reduce the types of spare parts, reduce the manufacturing cost and simplify the operation. Further, the through hole 6 can be a countersunk hole, so that the head of the fastener is not higher than the surface of the inner surface 2, and the inner surface 2 is uniformly and firmly connected with the surface of the acetabular cup.
Further, the through holes 6 are provided in a plurality, such as 2,3, 5 or 7, etc., uniformly distributed on the defect block body 1. The plurality of through holes 6 are arranged, so that the acetabular bone defect blocks can be conveniently fixed on the surfaces of the acetabular bones by selecting proper through holes 6 according to the needs during operation, and the plurality of through holes 6 are uniformly distributed on the defect block body 1, thereby bringing convenience for implanting the acetabular bone defect blocks during operation. Preferably, the number of through holes 6 is 5, and in addition, the through holes 6 facilitate the injection of bone cement between the inner surface of the acetabular bone defect block and the outer surface of the acetabular cup.
Preferably, the through hole 6 is arranged at the central position of the defect block body 1, and the through hole 6 is a screw hole, so that the implantation instrument can be conveniently connected, and the acetabular bone defect block can be accurately moved. Further, when there are a plurality of through holes, it is preferable that 1 through hole is provided in the center of the acetabular bone defect block, and the remaining through holes are uniformly distributed around the centrally provided through hole.
Further, it is preferred that at least one of the through holes 6 is adapted to fit through an acetabular cup mounting hole to facilitate securing the acetabular bone defect block to the acetabular cup through the acetabular cup mounting hole and the through hole 6 using fasteners.
Further, as shown in fig. 1 to 4, the bone cement fixing structure 4 is disposed on the inner surface 2, so that bone cement can be better combined when bone cement is coated on the inner surface 2, and the acetabular bone defect block and the acetabular cup can be better fixed, so that the processing and manufacturing of the inner surface 2 in the defect block body 1 are simplified.
Further, as shown in fig. 1 to 4, the bone cement fixing structure 4 may be bone cement grooves, preferably, the bone cement grooves are uniformly distributed on the inner surface 2 and have uniform depths. The bone cement grooves are arranged at a plurality of positions, so that the bonding area of the inner surface 2 and the bone cement is large, the acetabular bone defect blocks and the acetabular cup are firmly combined, the bone cement grooves are uniformly distributed on the inner surface 2, the inner surface 2 and the bone cement are uniformly connected, the bone cement grooves are uniform in depth, and the processing of the bone cement grooves is facilitated. The bone cement grooves may be in the form of circular grooves, bar grooves, etc. In order to allow even distribution of injected bone cement between the inner surface of the acetabular bone defect and the outer surface of the acetabular cup, the bone cement grooves may be interconnected by connecting grooves (the connecting grooves are not shown in fig. 1-4).
The present embodiment also provides a hip replacement system comprising at least one acetabular bone defect block as described above, and further comprising an acetabular cup, a femoral stem, etc. required for surgery, wherein the required implant or implantation instrument, etc. can be selected according to the surgical needs.
The hip joint replacement system comprises the acetabular bone defect block in the technical scheme, so that the hip joint replacement system has the beneficial effects of the acetabular bone defect block, and the details are omitted. The at least one refers to acetabular bone defect blocks which can comprise two (shown in fig. 10 and 11), three or four, etc. overlapped or combined to meet the needs of different patients, wherein the number of overlapped or combined is determined according to different needs. The superimposed or combined acetabular defect blocks can be rotated relative to one another at any angle, not limited to the angle shown in fig. 10 or 11, and the actual rotation angle is based on the surgical needs.
A surgical method using an acetabular bone defect block as described above, when only one acetabular defect block is available, the method comprising:
(1) Checking the shape of the acetabular bone defect, and if the bone surface of the acetabular bone defect is not a spherical defect, processing the bone surface into a spherical defect;
(2) Selecting an acetabular bone defect block or an acetabular bone defect block test mould with a proper model, and implanting the acetabular bone defect block test mould into the spherical defect;
(3) Selecting an acetabular cup or an acetabular cup test mould with a proper model, driving the acetabular cup or the acetabular cup test mould into an acetabulum, and automatically adapting an acetabular bone defect block to the acetabular cup while driving the acetabular cup/the acetabular cup test mould;
(4) And fixing the acetabular bone defect block and the acetabular cup according to the requirement, or replacing the acetabular bone defect block test mould and/or the acetabular cup test mould with the acetabular bone defect block and/or the acetabular cup and fixing the acetabular bone defect block and the acetabular cup.
The fixation is fixation using fasteners and/or bone cement fixation.
When two acetabular bone defect blocks are used, the surgical method is similar to the surgical method described above, including:
(1) Checking the shape of the acetabular bone defect, and if the bone surface of the acetabular bone defect is not a spherical defect, processing the bone surface into a spherical defect;
(2) Selecting a first acetabular bone defect block of a proper model, implanting the first acetabular bone defect block into the spherical defect and fixing the first acetabular bone defect block by a fastener;
(3) Selecting a second acetabular bone defect block or a second acetabular bone defect block test mold with a proper model to adapt the second acetabular bone defect block or the second acetabular bone defect block test mold to the first acetabular bone defect block;
(4) Driving an acetabular cup or an acetabular cup test mold into an acetabulum, and automatically adapting a second acetabular bone defect block or a second acetabular bone defect block test mold to the acetabular cup or the acetabular cup test mold while driving the acetabular cup or the acetabular cup test mold;
(5) And fixing the acetabular bone defect block and the acetabular cup according to the requirement, or replacing the acetabular bone defect block test mould and/or the acetabular cup test mould with the acetabular bone defect block and/or the acetabular cup and fixing the acetabular bone defect block and the acetabular cup.
The fixation is fixation using fasteners and/or bone cement fixation.
According to the acetabular bone defect block and the acetabular joint replacement system, as the cambered surfaces of the inner surface and the outer surface in the acetabular bone defect block are arranged and are respectively matched with the outer surface of the acetabular cup and the acetabular bone defect surface, the inner surface and the outer surface are independently surfaces which are more than half of the cambered surfaces, the automatic adaptation of the acetabular bone defect block or the acetabular bone defect block test mold and the acetabular cup or the acetabular cup test mold can be ensured, the overturning risk is small during the adaptation, the acetabular bone defect block or the acetabular bone defect block test mold can be firmly fixed at the acetabular bone defect part, compared with the artificial mark adaptation of a traditional operation method, the operation and the difficulty are greatly simplified, the combination of the acetabular bone defect block and the fixation required by the combination are avoided, the acetabular bone defect block is particularly suitable for the inner side defect of an acetabular cup, and in addition, the acetabular bone defect block and the acetabular cup are conveniently combined and then implanted into the acetabular cup.
According to the acetabular bone defect block and the acetabular joint replacement system, the acetabular bone defect block is directly filled in the acetabular bone defect position, so that stability of the acetabular bone defect block can be ensured, stability of an implanted acetabular cup can be ensured, namely the implanted acetabular bone defect block can be stably positioned in the acetabular bone defect position, and the implanted acetabular cup can be stably positioned in an acetabular fossa.
According to the acetabular bone defect block and the acetabular joint replacement system, the outer surface of the acetabular bone defect block is matched with the acetabular bone defect surface, a defect block with a proper model can be selected according to the size of the acetabular bone defect, the acetabular bone defect block has high universality, the bone loss of a patient during operation is small, the diameter difference between the outer cambered surface and the inner cambered surface of the acetabular bone defect block is not larger than 4mm, and the bone loss is minimum.
According to the acetabular bone defect block and the acetabular joint replacement system, the edge of the inner surface and the edge of the outer surface can be connected through the transition section, so that the acetabular bone defect block can be conveniently implanted without interference with an acetabular bone or an acetabular cup.
According to the acetabular bone defect block and the hip joint replacement system provided by the invention, the joint layer is contacted with the surface of the acetabular bone defect, so that biological bone ingrowth or bone growth is facilitated.
According to the acetabular bone defect block and the acetabular joint replacement system, the defect block body is provided with the through holes, so that a fastener can penetrate through the through holes to fixedly connect the acetabular bone defect block with an acetabulum, and bone cement can be conveniently injected between the defect block and an acetabular cup.
According to the acetabular bone defect block and the acetabular joint replacement system, bone cement can be filled in the bone cement grooves on the inner surface, so that the acetabular bone defect block and the acetabular cup are combined and fastened, alignment of the mounting holes of the acetabular cup and the through holes formed in the acetabular bone defect block and corresponding operation are avoided, and the bone cement grooves are communicated through the connecting grooves, so that bone cement is distributed uniformly.
The design of the avoiding groove in the acetabular bone defect block and the hip joint replacement system is beneficial to avoiding the influence of the defect block on the fixation of the acetabular cup.
Experiments prove that the invention has good use effect on cases of primary or revision of acetabular bone defects for hip joint replacement surgery, has strong universality, stable bone ingrowth performance from initial stability to long term, does not need additional implantation instruments, and is convenient to operate.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (11)
1. The acetabular bone defect block is characterized by comprising a defect block body (1), wherein the defect block body (1) comprises an inner surface (2) and an outer surface (3) which are protruded towards the same direction, the inner surface (2) is matched with the outer surface of an acetabular cup, the outer surface (3) is matched with the acetabular bone defect surface, the inner surface (2) and the outer surface (3) are independently surfaces which are larger than half of an arc surface and are not the whole arc surface, the half of the arc surface refers to the surface which passes through the center of the arc surface, the arc surface is the same in section, one part of the arc surface is half of the arc surface, the center of the arc surface refers to the spherical center of a sphere where the arc surface is located, the inner surface (2) and the outer surface (3) are different in shape, the inner surface (2) and the outer surface (3) are independently arc surfaces, and the axis of the inner surface (2) is coincident with the outer surface (3), the acetabular bone defect block is ensured to be automatically matched with the acetabular cup or the acetabular cup when the acetabular cup is driven into the acetabular cup, and the edge of the acetabular bone defect block body is provided with a plurality of grooves (11) so as to be fixed with the acetabular bone defect block.
2. The acetabular bone defect block of claim 1 wherein the diameter of the sphere on which the outer surface is located differs from the diameter of the sphere on which the inner surface is located by no more than 4mm.
3. The acetabular bone defect block of claim 1 wherein the distance between the inner surface and the outer surface is no greater than 20mm.
4. Acetabular bone defect block according to claim 1, characterized in that the thickness of the defect block body (1) decreases gradually from the centre to the edge of the arc.
5. The acetabular bone defect block of claim 1 wherein the inner (2) and outer (3) surface edges are joined by a transition.
6. The acetabular bone defect block according to claim 1, wherein the defect block body (1) comprises a body layer (7) and a bonding layer (8) covering the outer surface (3) side of the body layer (7).
7. The acetabular bone defect block according to claim 1, wherein the defect block body (1) is provided with through holes (6) extending from the inner surface (2) to the outer surface (3), and the defect block body (1) is fixedly connected with the acetabulum through at least one of the through holes (6) by a fastener.
8. Acetabular bone defect block according to claim 1, wherein the inner surface (2) is provided with bone cement fixation structures (4).
9. The acetabular bone defect block of claim 8 wherein the bone cement fixation structure (4) is a bone cement channel, the bone cement channel being uniformly distributed on the inner surface and being of uniform depth.
10. The acetabular bone defect block of claim 8 wherein the bone cement fixation structure (4) is a bone cement channel, the bone cement channels being in communication via a connecting channel.
11. A hip replacement system comprising at least one acetabular bone defect block according to any one of claims 1 to 10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010299203.0A CN113440315B (en) | 2020-04-16 | 2020-04-16 | Acetabular bone defect block and hip joint replacement system |
| PCT/CN2020/097125 WO2021208229A1 (en) | 2020-04-16 | 2020-06-19 | Acetabular bone deficiency block, hip replacement system, and operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010299203.0A CN113440315B (en) | 2020-04-16 | 2020-04-16 | Acetabular bone defect block and hip joint replacement system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113440315A CN113440315A (en) | 2021-09-28 |
| CN113440315B true CN113440315B (en) | 2024-12-06 |
Family
ID=77808293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010299203.0A Active CN113440315B (en) | 2020-04-16 | 2020-04-16 | Acetabular bone defect block and hip joint replacement system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113440315B (en) |
| WO (1) | WO2021208229A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113855338A (en) * | 2021-11-10 | 2021-12-31 | 长沙市第三医院 | Cushion block for acetabular bone revision reconstruction and fixing structure of cushion block and acetabular cup prosthesis |
| CN114028036A (en) * | 2021-12-06 | 2022-02-11 | 上海交通大学医学院附属第九人民医院 | Hip joint revision prosthesis |
| CN118680731B (en) * | 2024-07-15 | 2025-02-28 | 北京力达康科技有限公司 | A 3D printed individualized modular acetabular bone defect reconstruction prosthesis and preparation method thereof |
| CN119567551B (en) * | 2024-11-07 | 2025-07-18 | 吉林建筑大学 | 3D printing method and device based on acetabular bone defect model |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206651895U (en) * | 2016-10-27 | 2017-11-21 | 北京爱康宜诚医疗器材有限公司 | Acetabular bone fills block assembly and has its Hip System |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4904265A (en) * | 1988-09-09 | 1990-02-27 | Boehringer Mannheim Corporation | Cementless acetabular implant |
| FR2775586B1 (en) * | 1998-03-03 | 2000-06-30 | Tornier Sa | MODULAR ACETABULAR OR COTYLOID IMPLANT |
| CN102113924A (en) * | 2009-12-31 | 2011-07-06 | 北京爱康宜诚医疗器材股份有限公司 | Acetabular bone deformity filler |
| DE102011050183A1 (en) * | 2011-05-06 | 2012-11-08 | Aesculap Ag | Bone implant e.g. acetabular graft of hip joint implant, has fine structure formed by number of surface elements that define coarse structure |
| CN103169550B (en) * | 2013-04-15 | 2016-03-30 | 北京市春立正达医疗器械股份有限公司 | A kind of acetabular cup of improvement |
| CN203369993U (en) * | 2013-07-23 | 2014-01-01 | 肖东民 | Acetabulum cover |
| CN106264799B (en) * | 2015-05-22 | 2017-10-27 | 嘉思特华剑医疗器材(天津)有限公司 | A kind of acetabulum reconstruction prosthesis system for adapting to different type acetabular defects |
| CN205019202U (en) * | 2015-07-03 | 2016-02-10 | 江苏奥康尼医疗科技发展有限公司 | Damaged filler of bone |
| CN105105878A (en) * | 2015-07-27 | 2015-12-02 | 北京市春立正达医疗器械股份有限公司 | Acetabulum cushion block |
| CN205913428U (en) * | 2016-06-17 | 2017-02-01 | 重庆润泽医药有限公司 | Modular acetabular cup |
| CN207168609U (en) * | 2017-01-09 | 2018-04-03 | 北京积水潭医院 | For handling the artificial bone cushion block of dome sample acetabular bone defect |
| CN107174380A (en) * | 2017-05-25 | 2017-09-19 | 北京爱康宜诚医疗器材有限公司 | Acetabular component |
| CN108969152A (en) * | 2018-09-06 | 2018-12-11 | 北京安颂科技有限公司 | A kind of acetabular component and artificial hip joint |
-
2020
- 2020-04-16 CN CN202010299203.0A patent/CN113440315B/en active Active
- 2020-06-19 WO PCT/CN2020/097125 patent/WO2021208229A1/en active Application Filing
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206651895U (en) * | 2016-10-27 | 2017-11-21 | 北京爱康宜诚医疗器材有限公司 | Acetabular bone fills block assembly and has its Hip System |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021208229A1 (en) | 2021-10-21 |
| CN113440315A (en) | 2021-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113440315B (en) | Acetabular bone defect block and hip joint replacement system | |
| JP2530018B2 (en) | Joint socket member for joint prosthesis | |
| JP6822932B2 (en) | Orthopedic augmentation with recessed pockets | |
| US8123814B2 (en) | Method and appartus for acetabular reconstruction | |
| US4285071A (en) | Method of securing a prosthesis using cement spacers | |
| US9504581B2 (en) | Extended articular surface resurfacing head | |
| JP2638057B2 (en) | Shim for implantable femoral knee joint parts | |
| JP5595681B2 (en) | Acetabular prosthesis system | |
| EP1384456B1 (en) | Acetabular prosthesis system | |
| US6988015B1 (en) | Bone implant | |
| US20150289984A1 (en) | Total Shoulder Arthroplasty Prosthesis | |
| JP2013526375A (en) | Revision hip implant and prosthesis system | |
| JP2008531146A (en) | Set that constitutes a surface reconstruction hip implant | |
| EP3482722B1 (en) | Prosthesis for acetabular defect reconstruction | |
| US4417571A (en) | Prosthetic cement spacer and method for using same | |
| CN101917936B (en) | Acetabular prosthesis | |
| JP4243060B2 (en) | Tool for adjusting the mutual angle between the parts of the hip prosthesis | |
| US20200179124A1 (en) | Devices and methods for cementing insert bearing liner into acetabular cup component | |
| CN214017995U (en) | Acetabular bone defect block and hip joint replacement system | |
| WO1995015132A1 (en) | Orthopedic implant | |
| CN117084831B (en) | Femoral prosthesis and method of installation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |