Fanxiao Liu, Qingqi Meng, Heyong Yin * and Zexing Yan* Pages 677 - 691 ( 15 )
Background: Multiple studies have focused on stem cell-based treatments for rotator cuff disorders; however, the outcomes are not consistent.Objectives: This systematic review and meta-analysis were performed to evaluate the effects of stem cells on rotator cuff healing. Methods: A detailed search of relevant studies was conducted in three databases including Pubmed/ Medline, Cochrane library, and Embase databases, using the following keywords: “rotator cuff” or “Tissue Engineering” AND “stem cell” from inception to January 01, 2019. The standard mean difference (SMD) and 95% confidence interval (CI) for each individual study were extracted from the original studies or calculated based on relevant data and pooled to obtain integrated estimates using random effects modeling. Results: A total of 22 studies were identified. The results demonstrated that the ultimate strain in the stem cell group was significantly higher than that in the control group at 4 and 8 weeks. Muscle weight in the stem cell group was higher than the control group at 8 weeks, while no significant differences were detected at 16 weeks. The stem cell group had lower visual analog scale scores (VAS) at 1, 3, and 6 months, and higher American shoulder and elbow surgeons score (ASES) at 3 months. In addition, the walking distance, time, and speed in the stem cell group were significantly superior to those in the control group. Conclusions: This meta-analysis confirms that stem cells improved the rehabilitation of rotator cuff disorders. However, larger-scale studies are needed to further support these findings.
Rotator cuff, rotator cuff disorders, stem cell, tissue engineering, regenerative therapy, meta-analysis.
Department of Orthopaedics, Shandong Provincial Hospital Affiliated to Shandong University, No.324, Road Jing Wu Wei Qi, Jinan 250021, Shandong, Department of Orthopaedics, Guangzhou Red Cross Hospital, Jinan University, Tongfu road 396, Haizhu district, Guangzhou, Department of Trauma Surgery, University of Regensburg, Am biopark 9, 93049 Regensburg, Department of Trauma Surgery, University of Regensburg, Am biopark 9, 93049 Regensburg