Injury to the axillary and suprascapular nerves in rotator cuff arthropathy and after reverse shoulder arthroplasty: a prospective electromyographic analysis

Journal of Shoulder and Elbow Surgery
Yaiza LópizFernando Marco

Abstract

Neurologic pre- and postoperative injuries to the axillary and/or suprascapular nerve (SSN) have a higher incidence than expected and may lead to significantly decreased functional outcomes and increased risk of reverse shoulder arthroplasty (RSA) failure. Patients who underwent a RSA for rotator cuff tear arthropathy (RCTA) were included from December 2014 to December 2015. This study focused on the clinical (Constant score), radiographic, and pre- and postoperative electromyographic evaluations at 3 and 6 months. Twenty patients met the inclusion criteria. One was lost to follow-up. Preoperatively, 15 patients showed changes on electromyography (9 SSN and 15 axillary nerve lesions); all of them were chronic and disuse injuries. The mean preoperative relative Constant score (rCS) of all included patients was 39 ± 9 (range, 19-64). At 3 months postsurgery, the prevalence of acute injuries for both nerves was 31.5%. At 6 months postsurgery, 2 axillary nerve injuries and 6 SSN injuries remain unchanged, and the rest improved or normalized. The mean postsurgery rCS of the entire cohort at 6-month follow-up was 78 ± 6.5. Mean postoperative rCS for acute postoperative nerve injury was 71 ± 3 for the axillary nerve and 64 ± 5 for SSN...Continue Reading

Citations

Apr 17, 2020·The Neurodiagnostic Journal·Faisal R JahangiriJason A Ramsey
Oct 31, 2019·The Neurodiagnostic Journal·Faisal R JahangiriJason Ramsey
Nov 17, 2020·Journal of Shoulder and Elbow Surgery·Yaiza LopizFernando Marco
Apr 21, 2021·The Journal of Bone and Joint Surgery. American Volume·Matthew FlorczynskiHeather Baltzer
May 22, 2021·Plastic and Reconstructive Surgery·Angelika M SchwarzGloria M Hohenberger
Jun 29, 2021·Journal of Clinical Orthopaedics and Trauma·Sravya P VajapeyAndrew S Neviaser

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