Development of a new modular titanium femoral prosthesis consisting of a head and shaft component. Indications, operation and optimization of the tapered socket connection

• Published in: European journal of orthopaedic surgery & traumatology 1999-02, Vol.9 (1), p.13-18
• Main Authors: Andress, H. J., Lob, G., Kahl, S., Kranz, C., Gierer, P., Landes, J., Schürmann, M., Piltz, S.
• Format: Article
• Language: English
• Subjects: Prostheses
• ISSN: 1633-8065; 1432-1068
• DOI: 10.1007/BF02427763

SummaryThe development and clinical indications of a new modular femoral endoprosthesis consisting of a head and shaft component is discribed. Components are available in different lengths and diameters and therefore can be joined individually depending on the patients anatomy and surgery required. Both parts are joined by a unique optimized taper socket with a groove, avoiding fretting and corosion. Fatigue tests showed no loosening of the tapered connection and no prosthesis fracture. The advantage of this new modular prosthesis is diaphyseal stabilization, if necessairy by two distal interlocking screwes. Indications are revisions, pertrochanteric femoral and neoplastic fractures if cementless bridging of boney defects in the calcar region must be achieved. Further indications are femoral neck fraktures and coxarthrosis if stable diaphyseal fixation is required. The material and surface structure as well as the philosophie of the distal fixation are discussed.