System and method for ankle arthroplasty

摘要

A monolithic interpositional arthroplasty implant for use in repairing gyngylmus joints such as the joints of the ankle. The implant is a monolithic tibiotalar implant having a first major surface shaped to be positioned against a tibia. The tibia is allowed to articulate across the first major surface. A second major surface is shaped to be positioned against the talus.

主权项

1. A monolithic tibiotalar implant for use in arthroplasty repair of ginglymus joints, comprising: a first major surface of the monolithic implant curved for positioning against a tibia and configured to allow the tibia to articulate across the first major surface; a second major surface of the monolithic implant curved for positioning against a talus; and a protrusion proximate to the implant's anterior side sized to engage the neck of the talus, wherein the first and second major surfaces curve only in an anterior-posterior direction, and wherein the first major surface is curved differently than the second major surface such that the first major surface is adapted to be congruent with the tibia and the second major surface is adapted to be congruent with the talus, and wherein the monolithic implant is comprised of a polymeric biomaterial that includes both hard and soft segments to provide at least one of desirable wear resistance, congruency, and cushioning properties.