Objective: To investigate the prevalence of rotator cuff and long head of the biceps pathologies in manual wheelchair (MWC) users with spinal cord injury (SCI).

Design: Cross-sectional study.

Setting: Outpatient clinic at a tertiary medical center.

Participants: Forty-four adult MWC users with SCI (36 men and 8 women) with an average age (SD) of 42 (13) years. SCI levels ranged from C6 to L1; complete and incomplete SCI.

Outcome Measures: Participants’ demographic and anthropometric information, presence of shoulder pain, Wheelchair User’s Pain Index (WUSPI) scores, and magnetic resonance imaging findings of shoulder pathologies including tendinopathy, tendon tears, and muscle atrophy.

Results: Fifty-nine percent of the participants reported some shoulder pain. The prevalence of any tendinopathy across the rotator cuff and the long head of biceps tendon was 98%. The prevalence of tendinopathy in the supraspinatus was 86%, infraspinatus was 91%, subscapularis was 75%, and biceps was 57%. The majority of tendinopathies had mild or moderate severity. The prevalence of any tears was 68%. The prevalence of tendon tears in the supraspinatus was 48%, infraspinatus was 36%, subscapularis was 43%, and biceps was 12%. The majority of the tears were partial-thickness tears. Participants without tendon tears were significantly younger (P < 0.001) and had been wheelchair user for a significantly shorter time (P = 0.005) than those with tendon tears.

Conclusion: Mild and moderate shoulder tendinopathy and partial-thickness tendon tears were highly prevalent in MWC users with SCI. Additionally, the findings of this study suggest that strategies for monitoring shoulder pathologies in this population should not be overly reliant on patient-reported pain, but perhaps more concerned with years of wheelchair use and age.

目的：调查脊髓损伤（SCI）手动轮椅（MWC）使用者肩袖和肱二头肌长头病变的患病率。

设计：横断面研究。

地点：三级医疗中心的门诊。

参与者： 44 名患有 SCI 的成年 MWC 用户（36 名男性和 8 名女性），平均年龄 (SD) 为 42 (13) 岁。SCI 水平从 C6 到 L1；完整和不完整的SCI。

结果测量：参与者的人口统计和人体测量信息、肩痛的存在、轮椅使用者疼痛指数 (WUSPI) 评分，以及肩部病变的磁共振成像结果，包括肌腱病、肌腱撕裂和肌肉萎缩。

结果： 59% 的参与者报告了一些肩痛。肩袖和肱二头肌长头肌腱病变的发生率为 98%。冈上肌肌腱病变的患病率为 86%，冈下肌为 91%，肩胛下肌为 75%，二头肌为 57%。大多数肌腱病的严重程度为轻度或中度。任何眼泪的发生率为 68% 。冈上肌肌腱撕裂的发生率为 48%，冈下肌为 36%，肩胛下肌为 43%，二头肌为 12%。大多数眼泪是部分厚度的眼泪。与有肌腱撕裂的参与者相比，没有肌腱撕裂的参与者明显更年轻（P < 0.001）并且使用轮椅的时间明显更短（P = 0.005）。

结论：轻度和中度肩部肌腱病变和部分厚度的肌腱撕裂在 MWC 用户的 SCI 中非常普遍。此外，这项研究的结果表明，监测该人群肩部病变的策略不应过度依赖患者报告的疼痛，而可能更关注轮椅使用年限和年龄。