Femoral trochlea prostheses
AssigneeZimmer Technology, Inc.
InventorsJeffrey D. Brown, Adam M. Griner, Robert A. Hodorek, Raymond C. Parisi, Brian E. Vanskyock, Toby N. Farling
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Abstract
Various embodiments of femoral trochlea prostheses useable in a knee joint. The knee joint includes a patella and a distal femur with a femoral trochlea, or patello-femoral groove. In one embodiment, a femoral trochlea prosthesis includes a nonarticulating surface including contoured surfaces and/or planar surfaces. The present disclosure also provides a method for preparing a bone surface for receiving the prostheses described herein.
Claims19
A femoral trochlea prosthesis, comprising:
- an articulating surface;
- a plurality of nonarticulating surfaces, said plurality of nonarticulating surfaces including at least one of:
- a first and a second planar distal nonarticulating surfaces, said first planar distal nonarticulating surface noncoplanar with said second planar distal nonarticulating surface;
- and
- a first and a second planar anterior nonarticulating surfaces, said first planar anterior nonarticulating surface noncoplanar with said second planar anterior nonarticulating surface.
A femoral trochlea prosthesis, comprising:
- an articulating surface;
- a plurality of nonarticulating surfaces, said plurality of nonarticulating surfaces including:
- a planar anterior nonarticulating surface;
- a first planar distal nonarticulating surface;
- and
- a second planar distal nonarticulating surface, said first planar distal nonarticulating surface noncoplanar with said second planar distal nonarticulating surface.
A method for preparing an anatomical structure to receive a femoral trochlea prosthesis and for implanting the prosthesis in the anatomical structure, comprising the steps of:
- resecting a portion of the anatomical structure by making one of:
- a single planar resection along a line disposed at an angle with respect to a coronal plane of the anatomical structure;
- and
- at least a pair of planar resection lines, at least one of said pair of planar resection lines disposed at an angle with respect to a coronal plane of the anatomical structure;
- selecting a prosthesis to match the resection of said resecting step;
- and
- implanting the prosthesis with respect to the prepared anatomical structure.
A method for preparing an anatomical structure to receive a femoral trochlea prosthesis and for implanting the prosthesis in the anatomical structure, comprising the steps of:
- resecting a portion of the anatomical structure by making at least two noncoplanar cuts at a distal end of the anatomical structure, the two noncoplanar cuts defining a resected surface for a pair of distal nonarticulating surfaces of the prosthesis;
- selecting a femoral trochlea prosthesis to match the resection of said resecting step;
- and
- implanting the prosthesis with respect to the prepared anatomical structure.
Dependencies are inferred from the claim text.