Patent Number: 6,168,632

Title: Femur component of a hip joint endoprosthesis

Abstract: A femur component of a hip joint endoprosthesis which has a shaft (1) for anchoring in the medullary cavity of the femur. The shaft (1) has a distal section (9) and a proximal section (8), to which is connected a collar section (2) with a peg (3) for receiving an articular head, or with an articular head which is firmly attached to the collar section (2). The shaft (1) has a front surface (4), a rear surface (5), a lateral side (6), a mesial side (7) and a plane of symmetry (11), whereby longitudinal ribs (10) which stretch from proximal to distal are fitted on the front surface (4) and the rear surface (5) in the proximal section (8) of the shaft (1). The crests (12) of the longitudinal ribs (10) form an angle .delta./2 of at least 1.degree. to the plane of symmetry (11), and the envelope of the crests (123) of the longitudinal ribs (10) forms a double wedge-like or ellipsoid body, which tapers both toward the lateral side (6) and the mesial side (7).

Inventors: Moser; Walter (Kaufdorf, CH), Cotting; Anton (Grenchen, CH)

Assignee: Mathys Medizinaltechnik AG

International Classification: A61F 2/30 (20060101); A61F 2/36 (20060101); A61F 2/00 (20060101); A61F 002/32 ()

Expiration Date: 01/02/2018