[Material-specific wear of ceramic/ceramic sliding surfaces in revised hip endoprostheses--clinical and technological considerations].
After more than 8 years of "in-vivo"-experience with ceramic bearing surfaces in hip endoprostheses clinical and tribological aspects of damage-analysis in 29 cases of retrieved Al2O3 prostheses are performed. The balls and sockets are investigated in view of wear-quantification by relative metric determination and wear-quantification by SCAN-microscopy. In 2/3 of all cases the microstructure average grain standard was superelevated. As hypothesis of the destruction mechanism an avalanche-like acceleration of grain-excavations is discussed.
D000328:Adult; D000368:Aged; D000537:Aluminum Oxide; D002516:Ceramics; D006621:Hip Joint / Q000502:physiology; D006622:Hip Prosthesis; D006801:Humans; D008855:Microscopy, Electron, Scanning; D008875:Middle Aged; D010316:Particle Size
D000537:Aluminum Oxide
Materialspezifische Verschleisserscheinungen der Gleitpaarung Keramik/Keramik bei revidierten Hüftendoprothesen--klinische und werkstoffkundliche Betrachtungen.