Kohn Mark Daniel, Fernando Navin
Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, WA, USA.
Arthroplast Today. 2020 Jan 14;6(1):9-13. doi: 10.1016/j.artd.2019.12.003. eCollection 2020 Mar.
We present a case report of the rare complication of a femoral head prosthesis eroding through the acetabular liner and shell resulting in a clinical presentation of pseudo-dislocation. The patient presented with a 1-month history of progressive anterior and peritrochanteric hip pain without antecedent trauma. Radiographs demonstrated presumed hip dislocation with superior-posterior superimposition of the femoral head over the acetabular component. The patient underwent revision total hip arthroplasty with intraoperative evidence of extensive metallosis, osteolysis, and femoral head erosion through the acetabular polyethylene liner, acetabular shell, and implantation into the ilium. The femoral stem and acetabular shell were well-fixed, allowing for filling of the defect with bone void filler and cementation of a new polyethylene liner into the acetabular shell.
我们报告一例罕见并发症的病例，即股骨头假体穿破髋臼内衬和髋臼杯，导致临床表现为假性脱位。患者有1个月进行性前侧和转子周围髋部疼痛病史，无既往创伤史。X线片显示股骨头在髋臼组件上方后上移位，疑似髋关节脱位。患者接受了全髋关节翻修术，术中发现广泛的金属沉着症、骨质溶解，股骨头穿破髋臼聚乙烯内衬、髋臼杯并植入髂骨。股骨柄和髋臼杯固定良好，可用骨缺损填充材料填充缺损，并将新的聚乙烯内衬粘结到髋臼杯中。
