Iatrogenic suprascapular neuropathy secondary to drilling for superior labrum anterior-posterior repair: a case report

Suprascapular neuropathy is an uncommon complication following arthroscopic superior labrum anterior-posterior (SLAP) repair. The authors describe a patient who developed nerve entrapment at the spinoglenoid notch after surgery. Postoperatively, the patient reported persistent pain about the anterolateral aspect of the shoulder, with weakness affecting the superior and posterior rotator cuff muscles. Imaging suggested possible penetration of the posterior glenoid rim yet repeat arthroscopy revealed the nerve surrounded by a dense fibrous tissue. The authors propose that drill penetration during anchor placement caused inflammation, resulting in fibrous tissue formation and subsequent suprascapular nerve entrapment. Neurolysis of the nerve relieved symptoms. This case highlights the potential for suprascapular nerve entrapment secondary to an inflammatory tissue reaction caused by glenoid wall penetration during SLAP repair. Given the anatomic constraints, unique glenoid morphology and tortuous course of the suprascapular nerve, careful preoperative planning and proper surgical methodology and technique are essential to minimizing such complications. LEVEL OF EVIDENCE: Level V.