Surgery – Truss – Pad
Patent
1976-01-28
1976-10-26
Frinks, Ronald L.
Surgery
Truss
Pad
128 92C, A61F 124
Patent
active
039875008
ABSTRACT:
A total ankle prosthesis having a tibial component implanted in the prepared distal end surface of the tibia and a talar component implanted in the prepared proximal end surface of the talus which cooperate to provide an articulated ankle joint, is provided with malleolar components which function as interpositioned membranes for preventing the fibula from rubbing against the bone on the outer side of the talus and/or the talar component and the medial malleous from rubbing against the bone on the inner side of the talus as well as the talar component of the prosthesis. These malleolar components, or shields, are described as associated with a prosthetic device including a distal tibial implant having a convex surface facing the talus, and a proximal talar implant having a convex surface engaging and cooperating with the convex surface of the tibial component, which permits flexion, rotation and sliding movements substantially reproducing the movements of the normal human ankle. In this type of prosthesis, the medial malleolar shield is integral with the tibial component and is shaped to be positioned against the prepared inner surface of the medial malleolus, and the lateral malleolar shield is a separate component having a concave surface and constructed to be implanted in the distal fibula.
REFERENCES:
patent: 3872519 (1975-03-01), Giannestras et al.
patent: 3886599 (1975-06-01), Schlein
patent: 3889300 (1975-06-01), Smith
patent: 3896502 (1975-07-01), Lennox
patent: 3896503 (1975-07-01), Freeman et al.
Frinks Ronald L.
Olson Spencer E.
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