Witjes Suzanne, Van den Broek Chris, Koëter Sander, Van Loon Corné
Department of Orthopaedic Surgery, Rijnstate Hospital, Arnhem, The Netherlands.
Acta Orthop Belg. 2009 Jun;75(3):411-6.
Isolated degenerative osteoarthritis of the patellofemoral joint can be treated with a patellofemoral arthroplasty. Improvements in patellar resurfacing designs have resulted in diminished complication rates. We describe two cases of dislocation of the polyethylene bearing, which is an unusual complication of a mobile bearing metal-backed patellar component of a patellofemoral arthroplasty.
孤立性髌股关节退行性骨关节炎可采用髌股关节置换术治疗。髌骨表面置换设计的改进降低了并发症发生率。我们描述了两例聚乙烯衬垫脱位的病例，这是髌股关节置换术中活动衬垫金属背衬髌骨组件的一种罕见并发症。
