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Functional Anatomy and Biomechanics
Published in Emeric Arus, Biomechanics of Human Motion, 2017
Action: Stabilization of the humerus head into glenoid fossa and abduction of humerus. The supraspinatus innervation is given by suprascapular nerve (C5, C6). This nerve is a collateral branch of the brachial plexus.
MR neurography of the brachial plexus in adult and pediatric age groups: evolution, recent advances, and future directions
Published in Expert Review of Medical Devices, 2020
Alexander T. Mazal, Ali Faramarzalian, Jonathan D. Samet, Kevin Gill, Jonathan Cheng, Avneesh Chhabra
Parsonage- turner syndrome (brachial neuritis) is generally seen as an isolated syndrome and rarely, as a familial variant. The patients typically present with shoulder and neck pain followed by weakness. The C5 and C6 nerves, and upper trunk are the most commonly affected nerves with downstream neuropathy change of the suprascapular nerve and/or axillary nerve. T2 hyperintense signal will be observed in affected root, trunk, and cord segments. Diffuse increased T2 signal intensity will also be seen in regional musculature, alongside other muscle denervation changes, such as fatty replacement and atrophy. Uncommonly, one may also detect torsion of the nerve segment(s) leading to a triple B sign or Bull’s eye sign [61,62]. The ulnar nerve is the least commonly affected nerve in brachial neuritis.
Acute postoperative pain management with percutaneous peripheral nerve stimulation: the SPRINT neuromodulation system
Published in Expert Review of Medical Devices, 2021
Rodney A. Gabriel, Brian M. Ilfeld
Rotator Cuff Repair. One feasibility study has been published on the use of PNS to manage acute postoperative pain following arthroscopic rotator cuff repair[14]. Fourteen patients were recruited and received either implanted lead placement to the suprascapular nerve or the brachial plexus roots/trunks via ultrasound-guidance. Two patients received the suprascapular nerve lead; however, neither received any appreciable analgesia. Thus, the subsequent patients received the leads placed immediately posterior to the brachial plexus roots/trunks. In these patients during the first two postoperative weeks, the median pain score on the numeric rating scale was 1, and patients averaged less than 5 mg oxycodone per day.