METHOD AND APPARATUS FOR ACETABULAR RECONSTRUCTION
First Claim
1. An acetabular prosthesis for implantation in an acetabulum and surrounding pelvis, the acetabular prosthesis comprising:
- an acetabular cup having a substantially concave inner surface and a substantially convex outer surface, the outer surface operable to be received in the acetabulum;
an area defining a receptacle located in the outer surface of the acetabular cup;
a spacer member having an appendage formed on a surface thereof for mating engagement with the receptacle;
wherein the spacer member is disposed between the outer surface of the acetabular cup and the acetabulum; and
an attachment member integral with the acetabular cup for fastening to a surface of the pelvis.
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Accused Products
Abstract
An acetabular prosthesis for implantation in an acetabulum and surrounding pelvis is described. The acetabular prosthesis includes an acetabular cup having a substantially concave inner surface and a substantially convex outer surface, wherein an area defining a groove is located on the outer surface of the acetabular cup. An optional spacer member, having a raised ridge formed on a surface thereof, slidably engages the groove. The spacer provides augmentation and load bearing support in cases where bone tissue loss has occurred in and around the acetabulum. A fastener, such as a surgical screw, is used to secure the acetabular cup, and the optional spacer, to the acetabulum. At least one attachment member is integrally formed with the acetabular cup for fastening to a surface of the pelvis, such as the ilium and/or the ischium. Another optional spacer member is provided for the attachment member to provide augmentation around the attachment points on the pelvis. A fastener, such as a surgical screw, is used to secure the attachment member, and the other optional spacer, to the pelvis. The described acetabular prosthesis is especially useful in revision hip implant procedures where significant bone tissue loss has occurred either in or around the acetabulum and/or the pelvis.
42 Citations
57 Claims
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1. An acetabular prosthesis for implantation in an acetabulum and surrounding pelvis, the acetabular prosthesis comprising:
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an acetabular cup having a substantially concave inner surface and a substantially convex outer surface, the outer surface operable to be received in the acetabulum;
an area defining a receptacle located in the outer surface of the acetabular cup;
a spacer member having an appendage formed on a surface thereof for mating engagement with the receptacle;
wherein the spacer member is disposed between the outer surface of the acetabular cup and the acetabulum; and
an attachment member integral with the acetabular cup for fastening to a surface of the pelvis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. An acetabular prosthesis for implantation in an acetabulum and surrounding pelvis, the acetabular prosthesis comprising:
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an acetabular cup having a substantially concave inner surface and a substantially convex outer surface, the outer surface operable to be received in the acetabulum;
an attachment member integral with the acetabular cup for fastening to a surface of the pelvis; and
a spacer member adjacent to the attachment member;
wherein the spacer member is disposed between the attachment member and the surface of the pelvis. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55)
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56. A method for implanting an acetabular prosthesis in an acetabulum and surrounding pelvis, comprising:
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providing an acetabular cup having a substantially concave inner surface and a substantially convex outer surface, the outer surface operable to be received in the acetabulum, the outer surface of the acetabulum cup having an area defining a receptacle located therein, the acetabular cup having an attachment member integral therewith for fastening to a surface of the pelvis;
providing a spacer member having an appendage formed on a surface thereof for mating engagement with the receptacle;
securing the spacer member to the outer surface of the acetabular cup;
engaging the outer surface of acetabular cup with the acetabulum such that the spacer member is disposed between the outer surface of the acetabular cup and the acetabulum;
securing the acetabular cup to the acetabulum; and
securing the attachment member to the surface of the pelvis.
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57. A method for implanting an acetabular prosthesis in an acetabulum and surrounding pelvis, comprising:
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providing an acetabular cup having a substantially concave inner surface and a substantially convex outer surface, the outer surface operable to be received in the acetabulum, the acetabular cup having an attachment member integral with the acetabular cup for fastening to a surface of the pelvis;
providing a spacer member adjacent to the attachment member;
securing the spacer member to the attachment member;
engaging the outer surface of acetabular cup with the acetabulum such that the spacer member is disposed between the attachment member and the surface of the pelvis;
securing the acetabular cup to the acetabulum; and
securing the spacer member and the attachment member to the surface of the pelvis.
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Specification