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Since 1974 Biolox ceramic femoral ball heads have been used successfully for artificial modular hip joints. The revision rate due to ball head fracture is lower than 0.02%. This is an extremely low value. In this article it is shown how the safety of a ceramic ball head can be improved using the procedures of HIPing, engraving by laser technique, and 100% proof testing. By applying these means the materials properties density, grain size, grain size distribution, and the strength of the ball head, i.e. the fracture load can be improved significantly.

biomedizinische technik

Steigerung der Sicherheit von keramischen Kugelköpfen für Hüftendoprothesen - Improvement of the Safety of Ceramic Femoral Heads for Total Hip Replacement