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Does the critical shoulder angle decrease after acromioplasty? A systematic review and meta-analysis.
Mingtao Zhang1, Zhitao Yang1, Borong Zhang1
1Department of Orthopaedics, Lanzhou University Second Hospital, No. 82 Cuiyingmen, Chengguan District, Lanzhou, 730030, Gansu, China.
Journal of Orthopaedic Surgery and Research
|January 16, 2022
Summary
Acromioplasty effectively reduces the critical shoulder angle (CSA), particularly in patients with high preoperative measurements. This surgical procedure showed no short-term complications, offering a promising option for shoulder impingement.
Area of Science:
- Orthopedic Surgery
- Shoulder Biomechanics
- Minimally Invasive Procedures
Background:
- Rotator cuff tears are prevalent in older adults, often linked to shoulder impingement.
- The critical shoulder angle (CSA) is a key metric in assessing shoulder impingement.
- Acromioplasty is a surgical technique used to address shoulder impingement.
Purpose of the Study:
- To evaluate the efficacy of acromioplasty in reducing the critical shoulder angle (CSA).
- To identify factors influencing CSA reduction after acromioplasty.
- To assess the complication rate associated with acromioplasty.
Main Methods:
- Systematic literature review adhering to PRISMA guidelines.
- Meta-analysis of 9 studies involving 1236 patients.
- Data extraction on patient characteristics and CSA changes.
Main Results:
- Acromioplasty significantly reduced the mean CSA from 36.1° to 33.7° (p < 0.05).
- The overall mean difference in CSA reduction was 2.63° (p < 0.00001).
- Lateral acromioplasty demonstrated a more significant CSA reduction than anterolateral acromioplasty.
Conclusions:
- Acromioplasty reliably decreases the critical shoulder angle.
- The procedure is particularly effective for high preoperative CSA values.
- Acromioplasty is safe, with no reported short-term complications.
