Cheppalli Naga, Clinger Bryce, Brady Nicholas W, Skelly William
Orthopedic Surgery, Raymond G. Murphy Veterans Affairs Medical Center, Albuquerque, USA.
Orthopedic Surgery, University of New Mexico School of Medicine, Albuquerque, USA.
Cureus. 2022 Feb 1;14(2):e21813. doi: 10.7759/cureus.21813. eCollection 2022 Feb.
An 81-year-old male patient who underwent a Medacta GMK sphere kinematically aligned (KA) total knee arthroplasty (TKA) for end-stage knee osteoarthritis presented with a dislocated medial pivot (MP) tibia polyethylene (PE) insert on routine six-week postoperative x-rays. The patient presented asymptomatic with a normal range of motion. Dissociation of a fixed-bearing (FB) PE implant is an uncommon complication after TKA. There are only a few cases reported in the literature. We report for the first time a case of non-traumatic dissociation of MP PE from the tibial baseplate in a KA TKA in an asymptomatic patient but identified on routine postoperative radiographs.
一名81岁男性患者因终末期膝关节骨关节炎接受了Medacta GMK球形运动学对齐（KA）全膝关节置换术（TKA），术后六周常规X线检查显示内侧旋转平台（MP）胫骨聚乙烯（PE）衬垫脱位。患者无症状，活动范围正常。固定承重（FB）PE植入物分离是TKA术后一种罕见的并发症。文献中仅报道了少数病例。我们首次报告了一例在KA TKA中，无症状患者的MP PE与胫骨基板发生非创伤性分离，但在术后常规X线片上被发现的病例。
