Knee joint prosthesis

Abstract

Abstract Upon bending of the knee, the condyle-like bearing surfaces (4) of the femur part (5) roll upon the tibia-like rolling surfaces (3) of the tibia part (1). This movement is controlled by means of an element (24) which is inserted into a fork-shaped mounting (20) of the femur part (5) and has a toothing (11) over an area of its circumference in the shape of a sector of a circle. This toothing engages in a counter- toothing (16) arranged inside the fork-like mounting (20) likewise over a sector of a circle. The toothing arrangement (11, 16) ensures a substantially controlled rolling movement of the two artificial joint parts (1 and 5), as a result of which the approximation of this movement to the nature of the physiological movement is improved. <IMAGE>

Inventors

• 👤 Hansbeat Dr.-Med. Burch
• 👤 Humphrey A.V. Van Der Roer

Bibliographic Details