Infraspinatus atrophy due to Bennett lesion causing suprascapular nerve palsy

Abstract

We report the case of a 19-year-old professional volleyball player who presented with right shoulder pain exacerbated during sports activity. On physical examination, infraspinatus atrophy was evident. As the clinical setting suggested suprascapular nerve entrapment syndrome, shoulder MR and later CT were performed. The results showed radiological signs of subacute-chronic infraspinatus muscle denervation and a Bennett lesion of the shoulder, presumably due to chronic repetitive trauma during the classical overhead swing in volleyball. The patient agreed to surgical treatment, and arthroscopic decompression was achieved. After months of rehabilitation, the pain gradually subsided, the infraspinatus muscle recovered its trophism, and the patient progressively returned to her regular sports activity.

A Tale of Two Suprascapular Neuropathy Presentations: A Case Report

“…Compression of the SSN from a paralabral cyst is the most common extrinsic or secondary cause of neuropathy. Compression neuropathy has been reported in patients with SLAP tears, ganglion cysts, Bennett lesion, ossified or hypertrophied superior transverse scapular and spinoglenoid ligaments [ 22 , 23 , 24 ], In a 2018 systematic review, Memon et al report the most common cause of compressive SSN neuropathy was a cyst at the spinoglenoid notch identified in 42% of patients [ 23 ]. Paralabral cysts are often associated with labral tears and can cause compression of the SSN at the spinoglenoid notch or suprascapular notches [ 22 , 25 ].…”