脑卒中后偏瘫患者因下肢肌无力或肌痉挛以及本体感觉障碍可能引起膝过伸，是常见的并发症之一，至今尚不清楚其具体的发病机制。患者可因膝关节过度伸展而导致功能性活动受限以及关节的病理改变，严重的膝过伸可导致步行受限，从而影响患者的日常生活活动能力和生活质量。康复训练可以帮助减少脑卒中后膝过伸的发生，提高患者的步行功能。本文对脑卒中后膝过伸的康复治疗和预防进展进行综述，以期为临床防治膝过伸提供参考依据。

Hyperextended knee is one of the common complications in hemiplegia patients after stroke due to muscle weakness or spasm of lower limbs and proprioceptive disorder. So far, its specific pathogenesis is not clear. Patients may have limited functional activities and pathological changes due to over extension of the knee joint, and those who have serious illness may have limited walking, which will affect their ability of daily life and quality of life. Rehabilitation training can help reduce the occurrence of hyperextended knee after stroke and improve the walking function of patients. This paper reviews the progress in rehabilitation and prevention of hyperextended knee in patients after stroke, in order to provide references for clinical prevention and treatment of hyperextended knee.