Prosthetic implant procedure and femoral broach therefor

Details Prosthetic implant procedure and femoral broach therefor Prosthetic implant procedure and femoral broach therefor

1988-01-19

1992-02-18

Hafer, Robert A.

Surgery

Instruments

Orthopedic instrumentation

606 89, 623 23, A61B 1700, A61F 232, A61F 236

Patent

active

050890042

ABSTRACT:
A procedure for contouring the wall of a femoral cavity in a femur for the reception of a femoral stem to be seated within the femoral cavity employs a femoral broach which includes cutting teeth aligned along peripherally spaced apart longitudinal rows extending along a portion of the outer surface of the blade of the broach for forming a multiplicity of alternating longitudinally extending generally parallel grooves and ribs in the wall of the cavity, at least some of the grooves being contiguous with harder portions of the bone of the femur while the ribs are comprised of softer portions of the bone so that completion of the contouring will be signalled by bottoming of the blade of the broach upon the harder portions of the bone and upon implant, the femoral stem will be seated upon the harder portions of bone while the softer portions of bone will be compressed between the femoral stem and the harder portions of bone to accomplish fixation by an interference fit. Upon completion of the contouring of the wall of the cavity, and prior to withdrawal of the blade of the femoral broach, the seated blade of the broach serves as a true gauge of the subsequent location of the femoral stem relative to the femur. A vented, interchangeable distal tip on the blade of the broach pilots the broach for precise alignment of the blade during the contouring procedure.

REFERENCES:
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patent: 3067740 (1962-12-01), Haboush
patent: 4199824 (1980-04-01), Niederer
patent: 4352212 (1982-10-01), Greene et al.
patent: 4530115 (1985-07-01), Muller et al.
patent: 4551863 (1985-11-01), Murray
patent: 4608053 (1986-08-01), Keller
patent: 4642121 (1987-02-01), Keller
patent: 4645506 (1987-02-01), Link
patent: 4664668 (1987-05-01), Beck et al.
patent: 4693724 (1987-09-01), Rhenter et al.

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