Modular trial hip replacement system

Details Modular trial hip replacement system Modular trial hip replacement system

1990-09-04

1992-03-31

Hafer, Robert A.

Surgery

Instruments

Orthopedic instrumentation

623 18, A61F 504, A61F 230

Patent

active

051004070

ABSTRACT:
A multi-piece trial femoral component kit is used for preparing and sizing a femoral cavity prior to implantation of a prosthetic femoral component. The trial component kit has at least three trial stem portions of differing size and at least three trial body portions of different size. The stem and body portions include mating male and female elements which allow the stem portions to be securely coupled to the body portions. In order to ensure that the so-coupled stem and body portions form a trial femoral component having a size equal to an available orthopedic femoral implant, the male and female elements include a key and keyway which are sized so that only trial stem and body portions resulting in an available femoral implant can be combined and used as a trial femoral component.

REFERENCES:
patent: 3918441 (1975-11-01), Getscher
patent: 3943576 (1976-03-01), Sivash
patent: 3987499 (1976-10-01), Scharbach
patent: 4587964 (1986-05-01), Walker
patent: 4676797 (1987-06-01), Anapliotis
patent: 4705520 (1987-11-01), Ahrens
patent: 4728333 (1988-03-01), Masse
patent: 4846839 (1989-07-01), Noiles
patent: 4911722 (1990-03-01), Crespy
patent: 4936863 (1990-06-01), Hofmann
patent: 4963155 (1990-10-01), Lazzeri
P. D-9 from 1982 Howmedica Catalog.

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