Conclusions: Factors that are associated with progression of a rotator cuff tear are an age of more than sixty years, a full-thickness tear, and fatty infiltration of the rotator cuff muscle.

• 结论：与肩袖撕裂病情演变进程相关的因素包括年龄＞60岁，全层撕裂及肩袖肌处的脂肪浸润。