Modular hip joint prosthesis with adjustable anteversion

Details Modular hip joint prosthesis with adjustable anteversion Modular hip joint prosthesis with adjustable anteversion

1989-11-03

1991-03-26

Isabella, David J.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

Bone

623 18, A61F 232

Patent

active

050025813

ABSTRACT:
The present invention provides a modular hip prosthesis, and instrumentation for implanting the same, which has provision for varying the angulation between the stem portion and the trochanteral module portion by provision of connection means between the neck and stem which can be positioned or attached together in a variety of rotational positions. Variation of the angulation or anteversion is made possible in accordance with the present invention by virtue of the fact that the axis of the connection portion of the stem and neck is angularly offset from the axis of the body of the stem and neck, respectively. A further aspect of this invention is the provision of instrumentation for formation of a cavity for implantation of a prosthesis of this invention which is provided with indication means for indicating to the surgeon the optimum angle for assembly of the prosthesis of invention for implantation into a particular proximal femur.

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patent: 4693724 (1987-09-01), Rhenter et al.
patent: 4778475 (1988-10-01), Ranawat et al.
patent: 4822370 (1989-04-01), Schelhas

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