Sierra Stephen, Akalonu Chibuzo, West Kevin, Blue Matthew, Brindley George
Department of Orthopaedic Surgery and Rehabilitation, Texas Tech University Health Sciences Center, 3601 4th St. MS 9436, Lubbock, TX 79436, USA.
Case Rep Orthop. 2019 Sep 15;2019:2038983. doi: 10.1155/2019/2038983. eCollection 2019.
Rotating-bearing total knee arthroplasty has been theorized to have some advantages in the kinematics and wear characteristics of total knee arthroplasty. A rare complication of rotating-bearing total knee arthroplasty is rotary dislocation, spinout, of the polyethylene component. When these dislocations occur, they typically result in a 90-degree dislocation in respect to the axial axis of the knee. This case is unique in that it presents a complete 180-degree polyethylene dislocation without trauma.
旋转平台全膝关节置换术在全膝关节置换术的运动学和磨损特性方面被认为具有一些优势。旋转平台全膝关节置换术的一种罕见并发症是聚乙烯部件的旋转脱位，即旋出。当这些脱位发生时，它们通常会导致相对于膝关节轴呈90度的脱位。该病例的独特之处在于它呈现了一例无外伤的180度聚乙烯完全脱位。
