摘要复发性关节血肿是全膝关节置换后相对罕见的并发症，发生率为0?3％～1?6％。其发病原因多样，大体可分为全身原因和局部原因。在患者凝血功能正常的情况下，肿胀滑膜的卡压是最常见的原因。但有时出血原因也很难解释，致使诊断和治疗较为困难。保守治疗是出现症状之后的首选治疗方式，包括休息、冰敷、关节腔穿刺和制动等。如果保守治疗无效，首选介入治疗，如果介入治疗不成功，可以选择开放或关节镜手术。如果上述治疗后出血仍复发，需重复上述治疗手段，直至找到出血原因并止血成功。

abstractsRecurrent hemarthrosis is a relatively rare complication after total knee arthroplasty with the incidence estimated between 0?3% and 1?6%? There are various causes of this complication which can be broadly divided into general and local reasons? If the blood coagulation function was normal, the most common reason of hemarthrosis is the impingement of proliferative synovium between the articulating components of the knee prosthesis? However, some causes are not well understood which make diagnosis and treatment more difficult? Conservative therapy is the preferred treatment including rest, cooling, aspiration, and elevation? If conservative treatment is not successful, as next step an angiography and angiographic embolization of the source of bleeding is indicated? If embolization is unsuccessful, open synovectomy or arthroscopic is the next step? If these approaches are unsuccessful, the previously mentioned steps should be repeated until the cause of recurrent hemarthrosis become clear and the bleeding have been stopped.