9, 693, 867
A61F 213845 (2013.01); A61F 2130 (2013.01); A61F 2132 (2013.01); A61F 213804 (2013.01)
Total knee replacements for hinged knee implants include a tibial member, a femoral member, a hinge assembly having a laterally extending axle configured to hingedly attach the femoral member to the tibial member, and a lock mechanism in communication with the hinge assembly. The lock mechanism is configured to (i) lock the femoral member in alignment with the tibial member for a full extension or other defined stabile walking configuration to thereby allow an arthrodesis or stiff knee gait and (ii) unlock to allow the femoral and tibial members to pivot relative to each other for flexion or bending when not ambulating.
Clemson University Research Foundation, Clemson, SC (US); University of South Carolina, Columbia, SC (US)