Rankin Conor S, Robinson P G, Beattie N, Gaston P
University of Edinburgh Medical School, United Kingdom.
Department of Trauma and Orthopaedic Surgery, Royal Infirmary of Edinburgh, United Kingdom.
JBJS Case Connect. 2019 Dec;9(4):e0336. doi: 10.2106/JBJS.CC.18.00336.
A 52-year-old man underwent right total hip replacement with a 32-mm BIOLOX delta ceramic head with a polyethylene liner. At 8 months, he fell onto his right hip. Radiographs at the time were unremarkable. One month later, he noticed a sharp pain and a sensation of grinding in his right hip; radiographs of the hip showed a fracture of the ceramic head.
This case further demonstrates that fourth-generation ceramic heads can fracture, and delays in catastrophic failure of ceramics in total hip arthroplasty (THA) following trauma may be secondary to the "slow crack growth" hypothesis.
一名52岁男性接受了右全髋关节置换术，使用的是带有聚乙烯内衬的32毫米BIOLOX delta陶瓷股骨头。8个月时，他右髋着地摔倒。当时的X线片未见异常。1个月后，他注意到右髋部剧痛并伴有摩擦感；髋部X线片显示陶瓷股骨头骨折。
该病例进一步证明第四代陶瓷股骨头会发生骨折，创伤后全髋关节置换术（THA）中陶瓷灾难性失败的延迟可能继发于“缓慢裂纹扩展”假说。
