Acetabular revision system
OwnerJames B. Grimesinventor
Life of this patent
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Abstract
An implantable acetabular hip prosthesis includes a primary shell having an outer surface adapted to be received within a surgically prepared acetabulum, and an inner cavity for receiving a bearing insert which, in turn, receives a femoral head portion of a femoral component of a total hip prosthesis. The acetabular component of the prosthesis further includes an augmentation piece which is attachable to the primary shell and which fills a defect, such as a rim or cavitary defect, adjacent the natural acetabulum. The augmentation piece may be fixedly retained in a selected one of a plurality of angular orientations, relative to the primary shell. A plurality of augmentation pieces of varying sizes and shapes may be provided to allow the orthopedic surgeon to select an appropriate augmentation piece to match the defect.
Claims26
An implantable hip prosthesis, comprising:
- a primary shell having an outer surface adapted to be received within a surgically prepared acetabulum, and having an inner cavity for receiving a bearing insert which, in turn, receives a femoral head portion of a femoral component of a total hip prosthesis;
- augmentation means sized for filling a superior or superior/posterior defect in the acetabulum;
- and
- an attachment member extending from the primary shell to said augmentation means for attaching said augmentation means to the primary shell.
An implantable hip prosthesis, comprising:
- a primary shell having an outer surface adapted to be received within a surgically prepared acetabulum, and having an inner cavity for receiving a bearing insert which, in turn, receives a femoral head portion of a femoral component of a total hip prosthesis;
- and
- augmentation means, attachable to the primary shell, for filling a superior or superior/posterior defect in the acetabulum;
- said augmentation means comprising an augmentation piece, means for attaching the augmentation piece to the primary shell so as to allow the augmentation piece to be angularly adjusted relative to the shell, and means for fixedly retaining the augmentation piece in a selected angular orientation.
An implantable hip prosthesis, comprising:
- a primary shell having an outer surface adapted to be received within a surgically prepared acetabulum, and having an inner cavity for receiving a bearing insert which, in turn, receives a femoral head portion of a femoral component of a total hip prosthesis;
- and
- augmentation means, attachable to the primary shell, for filling a superior or superior/posterior defect in the acetabulum;
- said augmentation means comprising a plurality of augmentation pieces of varying sizes, and means for attaching a selected one of said augmentation pieces to the primary shell to fill the defect;
- said means for attaching comprising means for allowing the augmentation piece to be angularly adjusted relative to the shell, and wherein said augmentation means further comprises means for fixedly retaining the augmentation piece in a selected angular orientation.
Dependencies are inferred from the claim text.