摘要单间室膝关节置换术（UKA）是治疗终末期膝关节前内侧骨关节炎的有效方法。UKA围手术期可能发生假体周围胫骨平台及股骨内髁骨折，其治疗极具挑战性。导致这一并发症的原因包括：技术性原因，如术中操作导致平台后皮质强度弱化、内侧胫骨关节面切骨量过多导致承载假体的骨量减少、假体对线不良导致骨床应力集中等；假体设计原因，如非骨水泥假体的压配固定设计、胫骨切骨导向器多钉孔固定等；胫骨平台形态原因，如亚洲人群胫骨内侧平台窄小及悬凸等。合理选择适应症、正确地把握手术原则及标准化手术技术是预防UKA围手术期假体周围骨折的关键，治疗方式的选择主要取决于骨折模式及假体的稳定性。

abstractsUnicompartmental knee arthroplasty (UKA) is an effective treatment for end-stage anteromedial osteoarthritis of the knee. Medial tibial plateau fracture or femoral condyle fracture may occur after UKA, and its treatment is very challenging. The causes leading to this complication include: surgical technique errors, such as the weakening of posterior cortical strength of the tibial platform during operation, the reduction of bone mass due to too much tibial osteotomy, and the stress concentration in the bone bed due to bad alignment of the prosthesis, etc. Prosthesis design factors, such as press-fit fixation design of cementless UKA prosthesis, and multiple nail holes fixation for tibial osteotomy guide, etc. And the morphology of tibial plateau, such as tibial platform in Asian people with narrow and small shap and medial overhanging condyles. Correct selection of patients, strict surgical principles and standardized surgical techniques are the keys to prevent periprosthetic fractures during and after medial UKA. After the diagnosis is confirmed, the treatment choice mainly depends on the fracture pattern and the stability of the prosthesis.