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目的:采用磁共振成像(MRI)分析脑卒中后肩痛(PSSP)患者并发肩关节前方撞击综合征的影像学特点，并探讨其发病机制和分型。方法:将脑卒中后肩痛合并肩关节前方撞击综合征的患者15例作为研究对象，对其进行肩关节查体、MRI影像学分析，并对肩关节前方撞击综合征进行分型。结果:MRI影像学表现提示，PSSP合并肩关节前方撞击综合征的患者中，4例患者为Ⅰ型，即肩胛下肌前方撞击型；7例患者为Ⅱ型，即肩胛下肌后方撞击型；1例患者为Ⅲ型，即肱二头肌长头肌腱下方撞击型；2例患者为Ⅳ型，即肩胛下肌上缘撞击型；1例患者为Ⅴ型，即混合型，这一类型主要是由Ⅰ、Ⅱ、Ⅲ型撞击混合而成。结论:PSSP合并肩关节前方撞击综合征患者的撞击类型并不相同，且不同类型的肩关节前方撞击综合征，其撞击部位和特点也不同，MRI是诊断肩关节前方撞击症不同分型的重要方法。“,”Objective:To explore the mechanism of and classify post-stroke shoulder pain (PSSP) from anterior shoulder impingement syndrome using magnetic resonance imaging (MRI).Methods:Fifteen patients with post-stroke shoulder pain resulting from anterior shoulder impingement syndrome were given a physical examination of the shoulder joint with MRI. Their anterior shoulder impingement syndrome was classified.Results:The images indicated that 4 of the patients had anterior subscapular muscle impingement, 7 had posterior subscapular muscle impingement, 1 had impingement of the long head tendon of the lower biceps, 2 had impingement of the upper edge of the subscapular muscle and 1 had multiple impingements.Conclusions:PSSP and anterior shoulder impingement syndrome are different, and anterior shoulder impingement syndrome involves impingement at different sites with different characteristics. MRI is an effective diagnostic technique for differentiating the different types of anterior shoulder impingement syndrome.