Frozen shoulder is a general term for degenerative lesions and chronic aseptic inflammation of the soft tissues around the shoulder joint caused by a variety of factors. Its main symptoms include pain around the shoulder joint, limited movement, stiffness, and related muscle atrophy around the shoulder joint. 

肩周炎是由多种因素所导致的肩关节周围软组织退行性病变和慢性无菌性炎症的总称，其主要症状表现为肩关节周围疼痛、活动受限、僵硬以及肩关节周围相关肌肉萎缩。