Blue Matt, Douthit Christian, Dennison Joel, Caroom Cyrus, Jenkins Mark
Department of Orthopaedic Surgery and Rehabilitation, Texas Tech University Health Sciences Center, 3601 4th St. MS 9436, Lubbock, TX 79436, USA.
Case Rep Orthop. 2018 Sep 16;2018:2381406. doi: 10.1155/2018/2381406. eCollection 2018.
A rare complication from computer-navigated total knee arthroplasty is a fracture through the insertion site of a tracking pin. These pins are inserted across the femoral and tibial shafts either bicortically, transcortically, or unicortically and have a reported fracture incidence of 1.38%, with all published cases occurring after bicortical pin placement. In this case, a 60-year-old female suffered a femoral shaft fracture through a unicortically inserted computer navigation tracking pin 6 weeks after total knee arthroplasty. Her fracture was successfully fixated with an intramedullary nail with retention of the knee prosthesis. This case is important as it records the risk for a postoperative fracture through a unicortically inserted computer navigation pin.
计算机导航全膝关节置换术的一种罕见并发症是跟踪针插入部位发生骨折。这些针经双皮质、经皮质或单皮质方式穿过股骨干和胫骨干插入，据报道骨折发生率为1.38%，所有已发表病例均发生在双皮质针置入后。在本病例中，一名60岁女性在全膝关节置换术后6周，经单皮质插入的计算机导航跟踪针处发生股骨干骨折。她的骨折通过髓内钉成功固定，膝关节假体得以保留。该病例很重要，因为它记录了经单皮质插入的计算机导航针术后发生骨折的风险。
