Jonathan Kirk Nielsen;Roger Ryan Dees;Paul Charles Crabtree, Jr.
发明人:
Roger Ryan Dees,Paul Charles Crabtree, Jr.,Jonathan Kirk Nielsen
申请号：
US12307102
公开号：
US08523950B2
申请日:
2007.06.30
申请国别(地区):
US
年份:
2013
代理人:
摘要：
A hinged knee prosthesis (10) comprises a tibial component (16) and a femoral component (14). The tibial component (16) is configured to attach to a tibia. The tibial component has a bearing surface (128). The femoral component (14) is configured to hingedly attach to the tibial component (16) and rotate relative to the tibial component (16). The femoral component (14) comprises a medial condyle (30) and a lateral condyle (32). The medial and lateral condyles (30 and 32) have an eccentric sagittal curvature surface (50) configured to rotate and translate on the bearing surface (128) of the tibial component (16). A method of rotating a hinged knee (10) through a range of flexion is provided. The method fixedly attaches a femoral component (14) to a tibial component (16). Axial rotation of the femoral component (14) is induced relative to the tibial component (16) when the hinged knee (10) is flexed.
