Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1985-09-03
1987-02-24
Apley, Richard J.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
A61F 236
Patent
active
046455078
ABSTRACT:
A prosthesis which is particularly well-suited for use in the region of the hip joint has a shaft which carries a bearing at one end. The bearing has a rim at its junction with the shaft. The end of the bearing opposite the rim has a saddle-shaped portion including a pair of protrusions which flank a depression. The depression has a pair of bearing surfaces separated by a protuberance which is formed in the depression and extends from one of the protrusions to the other. The prosthesis is installed at a hip joint by inserting the shaft into the end of the femur nearest the pelvis. The shaft is pushed into the femur until the rim on the bearing contacts the end of the femur. One of the protrusions is passed through an opening in the wall of the pelvis so that the wall is received in the depression of the bearing. The wall is contoured so as to conform to the shape of the depression and the protuberance therein and rests on the surface of the protuberance as well as the bearing surfaces of the depression. When the prosthesis has been installed in this manner, relative pivotal movement of the femur and the pelvis is possible. The prosthesis makes it possible to obtain relative pivotal movement of the femur and the pelvis even when the pelvis has been damaged or has deteriorated to such an extent that the natural socket can neither be repaired nor replaced.
REFERENCES:
patent: 3748662 (1973-07-01), Helfet
patent: 3852831 (1974-12-01), Dee
patent: 3879767 (1975-04-01), Stubstad
patent: 3979778 (1976-09-01), Stroot
patent: 4156944 (1979-06-01), Schreiber et al.
patent: 4280231 (1981-07-01), Swanson
Engelbrecht Eckart
Keller Arnold
Nieder Elmar
Apley Richard J.
GMT Gesellschaft fur Medizinische Technik mbH
Isabella David J.
Kontler Peter K.
Waldemar Link (GmbH & Co.)
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