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Arthroscopic subscapularis augmentation combined with capsulolabral reconstruction is safe and reliable

  • SHOULDER
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Knee Surgery, Sports Traumatology, Arthroscopy Aims and scope

Abstract

Purpose

The study aimed to compare modified arthroscopic subscapularis augmentation (MASA) with tenodesis of the upper third of the subscapularis tendon using a tendon combined with capsulolabral reconstruction (Group A) or Bankart repair (Group B) for recurrent anterior shoulder instability (RASI).

Methods

A retrospective series of 49 patients underwent primary surgery for RASI with glenoid bone loss (GBL) < 25%. Outcomes included the Oxford Shoulder Instability Score (OSIS), Visual Analogue Scale (VAS) score, Rowe score, and American Shoulder and Elbow Surgeons (ASES) functional outcome scale score. Recurrent instability, sports activity level, and range of motion (ROM) were also analysed.

Results

No significant differences were observed at baseline. Forty-six patients were available for more than 2 years of follow-up. At the last follow-up after surgery, the patients in both groups had experienced significant improvements in all outcome scores (P < 0.05 for all), and obvious decreases in forward flexion and external rotation were noted in both groups (P < 0.05 for all). Group A had superior ASES scores, VAS scores, and OSISs (P < 0.05) but did not experience significant differences in either the Rowe score or ROM compared to Group B. Group A had lower rates of recurrent instability and superior outcomes for the return to sports activities. One patient in Group A had subluxation, and 4 patients in Group B had dislocation or subluxation. No patients in either group experienced neurovascular injury, joint stiffness, or surgical wound infection.

Conclusion

For RASI with GBL < 25%, MASA with tenodesis of the upper third of the subscapularis tendon using a tendon combined with capsulolabral reconstruction was a safe technique that produced better outcomes in terms of ASES scores, VAS scores, OSISs, the return to sports, and postoperative recurrent instability and did not decrease the ROM compared to that achieved by arthroscopic Bankart repair.

Level of evidence

III.

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Funding

This study was supported by Sanming Project of Medicine in Shenzhen (Grant No. SZSM201612078).

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Author notes

  1. Shiyou Ren and Xintao Zhang equal contributors.

Authors and Affiliations

  1. Department of Sports Medicine and Rehabilitation, Peking University Shenzhen Hospital, 1120 Lianhua Road, Futian District, Shenzhen, 518036, Guangdong, China

    Shiyou Ren, Xintao Zhang, Ri Zhou, Tian You, Xiaocheng Jiang & Wentao Zhang

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  1. Shiyou Ren
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  2. Xintao Zhang
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  3. Ri Zhou
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  4. Tian You
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  5. Xiaocheng Jiang
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Correspondence to Wentao Zhang.

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IRB approval was obtained (Peking University Shenzhen Hospital, approval, ID: 201768).

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Ren, S., Zhang, X., Zhou, R. et al. Arthroscopic subscapularis augmentation combined with capsulolabral reconstruction is safe and reliable. Knee Surg Sports Traumatol Arthrosc 27, 3997–4004 (2019). https://doi.org/10.1007/s00167-019-05648-3

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  • DOI: https://doi.org/10.1007/s00167-019-05648-3

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