Unicondylar femoral prosthesis, tibial pad and short condyle replacement prosthesis

摘要

Short femur prosthesis (100, 200, 200), tibial pad 400, and short hip replacement prosthesis. The end femoral prosthesis (100, 200, 300) includes an osteotomy surface 120 for connecting to the femur and an articular surface 110 for contacting the tibia, and the articular surface 110 is the distal articular surface 111 and the posterior condyle. It includes an articular surface 112 . The distal articular surface 111 has a first radius of curvature (Rd) in the sagittal plane 101, the posterior articular surface 112 has a second radius of curvature (Rp) in the sagittal plane, and a second radius of curvature (Rp) The ratio of the first radius of curvature Rd to 1.4 to 2.1. The abutment surface 110 has a third radius of curvature Rc in the coronal surface 102 , and the third radius of curvature Rc is equal to the first radius of curvature Rd. The end and femoral prosthesis 100 of the present disclosure is better matched with the anatomical structure of the human femoral articular surface, avoiding the problems of insufficient covering and excessive osteotomy of the distal surface of the femur, and supporting performance and joint of the articular surface 110 . improve stability.