Chinese Journal of Tissue Engineering Research ›› 2019, Vol. 23 ›› Issue (19): 2996-3001.doi: 10.3969/j.issn.2095-4344.1245

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Relationship between the improvement of muscle atrophy and functional outcomes after arthroscopic rotator cuff repair

Zhang Shiwei, Ma Xiulin, Qi Yusen, Luo Jinwei, Jia Tianyang, Xu Cong, Lü Yongming   

  1.  (Department of Joint Surgery, Affiliated Hospital of Chengde Medical College, Chengde 067000, Hebei Province, China)
  • Received:2019-02-22 Online:2019-07-08 Published:2019-07-08
  • Contact: Lü Yongming, Chief physician, Department of Joint Surgery, Affiliated Hospital of Chengde Medical College, Chengde 067000, Hebei Province, China
  • About author:Zhang Shiwei, Master candidate, Department of Joint Surgery, Affiliated Hospital of Chengde Medical College, Chengde 067000, Hebei Province, China

Abstract:

BACKGROUND: The improvement of muscle atrophy of supraspinatus after rotator cuff repair in China is rarely reported, and there are few clinical studies on the muscle atrophy of supraspinatus. Relationship between the improvement of muscle atrophy and postoperative functional outcomes needs to be investigated further.
OBJECTIVE: To explore the association of the improvement of muscle atrophy with the functional outcomes of upper limbs after arthroscopic rotator cuff repair.
METHODS: A retrospective study of 44 patients who underwent arthroscopic surgery to repair rotator cuff tear between June 2015 and June 2017 was conducted. According to the size of rotator cuff tear, the patients were divided into three groups, partial small tear (n=6), moderate tear (n=23), large and huge tear (n=15) groups. Postoperative MRI of 1 year and postoperative MRI of 2 weeks were compared to observe the improvement of postoperative muscle atrophy. There were 31 cases in the improved group and 13 cases in the non- improved group. The shoulder pain, the range of motion, muscle strength of supraspinatus abduction and extorsion, Constant-Murley score, University of California, Los Angeles score were evaluated. The trial was approved by the Ethics Committee of Chengde Medical College, No. 22014.
RESULTS AND CONCLUSION: (1) All patients were followed up for 1 year. (2) The ratio of supraspinatus at postoperative 1 year in the partial small tear and moderate tear groups was significantly increased compared with the baseline, and the large and huge tear group showed no significant changes. (3) The postoperative Visual Analogue Scale score, Constant-Murley score and University of California, Los Angeles score at postoperative 1 year were significantly increased in all patients, and the range of motion of shoulder joint and muscle strength of supraspinatus were significantly improved (P < 0.01). (4) The abduction range, abduction strength, Constant-Murley score and University of California, Los Angeles score in the improved group were significantly higher than those in the non-improved group (P < 0.05). (5) In summary, muscle atrophy can be improved after rotator cuff repair in the groups with partial tears, small tears and moderate tears, but is difficult to restore in the groups with large and huge tears. The improved muscle atrophy of supraspinatus can increase the range of motion of abduction, muscle strength of supraspinatus abduction and functional score of shoulder joint.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: rotator cuff, rotator injury, tissue construction, tissue engineering, shoulder joint, arthroscopy, muscle atrophy, rotator repair, shoulder functional score, improvement of rotator muscle atrophy

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