Lo Chun Hin, Tang Yan Ho Bruce
Department of Orthopaedics and Traumatology, Tuen Mun Hospital, Tuen Mun, New Territories, Hong Kong.
Arthroplast Today. 2022 May 21;16:15-20. doi: 10.1016/j.artd.2022.04.002. eCollection 2022 Aug.
Spontaneous insufficiency fracture of the knee is a potentially devastating yet poorly understood disease entity that can lead to secondary osteoarthritis. Most cases involve the medial femoral condyle, and the lateral femoral condyle is rarely affected. The optimal treatment for spontaneous insufficiency fracture of the lateral femoral condyle remains undetermined, and there are no previous dedicated reports on treatment outcome with unicompartmental knee arthroplasty. A middle-aged lady presented with subacute left knee pain and a locked knee. Subsequent imaging studies revealed a spontaneous insufficiency fracture of the lateral femoral condyle. In view of the isolated compartment involvement, unicompartmental knee arthroplasty was performed with satisfactory outcome. At 1 year postoperatively, the patient had complete resolution of knee pain and was able to resume working.
膝关节自发性不全骨折是一种潜在的破坏性疾病，但人们对其了解甚少，它可能导致继发性骨关节炎。大多数病例累及股骨内侧髁，而外侧髁很少受累。外侧股骨髁自发性不全骨折的最佳治疗方法尚未确定，之前也没有关于单髁膝关节置换术治疗效果的专门报道。一位中年女性因左膝亚急性疼痛和膝关节交锁前来就诊。随后的影像学检查显示外侧股骨髁自发性不全骨折。鉴于仅累及单个间室，遂行单髁膝关节置换术，效果满意。术后1年，患者膝关节疼痛完全缓解，能够恢复工作。
