Patent ID: 8202323
Filing Date: 2012-06-19
Classification: A61F

Abstract:
1. A prosthetic joint comprising: a proximal tibial camming portion extending between a lateral portion of a posterior tibial cam of a tibial component and a medial portion of the posterior tibial cam in a first medio-lateral plane, the proximal tibial camming portion defined by sweeping a first radius of curvature in the first medio-lateral plane, the first radius of curvature having a first origin; a distal tibial camming portion extending between the lateral portion of the posterior tibial cam and the medial portion of the posterior tibial cam in a second medio-lateral plane, the distal tibial camming portion defined by sweeping a second radius of curvature in the second medio-lateral plane, the second radius of curvature having a second origin; an anterior femoral camming portion extending between a lateral portion of a posterior femoral cam of a femoral component and a medial portion of the posterior femoral cam in the first medio-lateral plane, the anterior femoral camming portion defined by sweeping a third radius of curvature in the first medio-lateral plane, the third radius of curvature having a third origin; a posterior femoral camming portion extending between the lateral portion of the posterior femoral cam and the medial portion of the posterior femoral cam in the second medio-lateral plane and defined by sweeping a fourth radius of curvature in the second medio-lateral plane, the fourth radius of curvature having a fourth origin, wherein 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; wherein the tibial component has a centerline dividing the tibial component into medial and lateral bearing surfaces, and wherein at least one origin of the first, second, third, or fourth origin is medially or laterally offset from the centerline of the tibial component when the centerline is projected onto, and the at least one origin is viewed in its respective medio-lateral plane.