Prosthetic arrangement for a complex joint, especially knee join

Details Prosthetic arrangement for a complex joint, especially knee join Prosthetic arrangement for a complex joint, especially knee join

1992-06-15

1994-02-01

Isabella, David

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

Implantable prosthesis

Bone

A61F 238

Patent

active

052828689

ABSTRACT:
To permit movement of coupling elements (13, 13a, 13b) which carry joint surfaces (21) congruent with condylar portions (19) of the prosthesis, the coupling elements are slidable in guide tracks (35), which are curved, and are widened at their terminal portions. The coupling elements have elongated engagement ribs which fit into the guide track groove, with minimum clearance and play at the narrowest, central portion of the guide groove, while permitting limited twisting as well as sliding movement due to the widened regions of the guide track at its end region. The position of guide track-rib can be reversed, if desired. The elements slide on a slide surface and can be retained, for example by an interlocking connection, such as a dovetail.

REFERENCES:
patent: 4085466 (1978-04-01), Goodfellow et al.
patent: 4207627 (1980-06-01), Cloutier
patent: 4309778 (1982-01-01), Buechel et al.
patent: 4340978 (1982-07-01), Buechel et al.
patent: 4353136 (1982-10-01), Polyzoides et al.
patent: 4470158 (1984-09-01), Pappas et al.
patent: 4728332 (1988-03-01), Albrektsson
patent: 4950297 (1990-08-01), Elloy et al.
patent: 5007933 (1991-04-01), Sidebotham et al.
patent: 5011496 (1991-04-01), Forte et al.
"New Jersey Tricompartmental Total Knee System".
"A Manual of the Oxford Knee", published by OEC Orthopaedic Ltd. Bridgend, South Glamorgan, United Kingdom.

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