The fact that the scapular anatomy is not associated only with prevalence of RCTs but is also associated with inferior patient outcomes has led to the idea that an arthroscopic reduction of a large CSA (>35 ) to a favorable range may be beneficial to reduce the risk of primary RCTs, rotator cuff retears, and unsatisfactory outcomes after treatment of RCTs for this patient population.
Anatomical cadaveric studies have demonstrated that the CSA can be significantly reduced by arthroscopic lateral acromioplasty (ALA).16,17 However, there is a risk of potentially damaging the deltoid origin during acromioplasty, which may lead to postoperative deltoid avulsion.18,19 Although it was reported that the deltoid origin was not macroscopically damaged by ALA,16,17 it still remains unclear whether ALA affects the me- chanical integrity of the deltoid. The purpose of this study was to determine whether a 5-mm and/or 10-mm ALA would weaken the structural and mechanical integrity of the lateral deltoid. It was hypothesized that ALA would not significantly affect the failure load of the lateral deltoid origin.
Full Article: Impact of Arthroscopic Lateral Acromioplasty on the Mechanical and Structural Integrity of the Lateral Deltoid Origin: A Cadaveric Study