Clinical Spectrum of Postsurgical Parsonage-Turner Syndrome: A Perspective From an Electrodiagnostic Laboratory

Background: Parsonage-Turner syndrome (PTS) is an underdiagnosed disorder characterized by the acute onset of severe pain in shoulder/scapula/arm followed muscle weakness/numbness distribution nerves derived from brachial plexus (BP). Surgical procedures are one several antecedent events PTS. This study describes clinical spectrum postsurgical (PSPTS) a large cohort patients. Materials and methods: Charts patients diagnosed with PTS during 16-year (2006-2022) retrospective review were analyzed to identify cases PSPTS. The criteria for PSPTS included new two days four weeks after surgical procedure weakness muscles innervated or more arising BP. EDX consist denervation localized branches subdivided into categories: definite (surgery at remote site) probable ipsilateral upper extremity cervical spine). Results: Of 202 (204 episodes) PTS, 111 (54%) idiopathic 61 (30%) episodes, 26 35 anterior interosseous nerve (AIN) was most affected, posterior (PIN), suprascapular nerve. Conclusion: In this series, surgery commonly recognized event AIN PIN frequent affected. Surgeons should consider who develop postoperative shoulder