| 摘要 |
PROBLEM TO BE SOLVED: To provide a knee prosthesis for more scrupulously reproducing the natural and original stability and kinematics of the knee. SOLUTION: The knee replacement system includes a proximal tibial posterior camming portion defined by a first radius of curvature having a first origin in a first medio-lateral plane; a distal tibial posterior camming portion defined by a second curvature having a second origin on a second medio-lateral plane; an anterior femoral camming portion of a posterior cam defined by a third radius of curvature having a third origin in the first medio-lateral plane; and a posterior femoral camming portion of the posterior cam and defined by a fourth radius of curvature having a fourth origin in the second medio-lateral plane. The second origin is closer to the lateral tibial portion than the first origin, or the fourth origin is closer to the medial femoral portion than the third origin. COPYRIGHT: (C)2010,JPO&INPIT |
