Abstract：
Nail-patella syndrome (NPS) is a genetic disorder causing anatomical abnormalities about the knee, including significant patellar hypoplasia. We present a case of a patient with NPS and severe knee osteoarthritis undergoing computer-assisted total knee arthroplasty (TKA). Several intraoperative anatomical challenges were appreciated. Postoperatively, the patient developed arthrofibrosis requiring manipulation; however, his final outcome was favorable.
Computer assistance may improve precision in patients with NPS undergoing TKA, but surgeons must be aware of the associated anatomic abnormalities and potentially increased risk of arthrofibrosis. Patellar resurfacing is often not feasible because of lack of bone stock.
Computer assistance may improve precision in patients with NPS undergoing TKA, but surgeons must be aware of the associated anatomic abnormalities and potentially increased risk of arthrofibrosis. Patellar resurfacing is often not feasible because of lack of bone stock.
摘要：
指甲髌骨综合征（NPS）是一种导致膝关节解剖异常的遗传疾病，包括显著的髌骨发育不全.我们介绍了一例NPS和严重膝骨关节炎的患者，该患者正在接受计算机辅助全膝关节置换术（TKA）。几个术中解剖学挑战受到赞赏。术后,患者出现关节纤维化，需要操作；然而，他的最终结果是有利的。
电脑辅助可以提高接受TKA的NPS患者的精确度，但外科医生必须意识到相关的解剖异常和可能增加的关节纤维化风险.由于缺乏骨骼储备，髌骨重修通常不可行。
电脑辅助可以提高接受TKA的NPS患者的精确度，但外科医生必须意识到相关的解剖异常和可能增加的关节纤维化风险.由于缺乏骨骼储备，髌骨重修通常不可行。
