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Ann Rehabil Med. 2016 Apr;40(2):362-367. English. Case Report. https://doi.org/10.5535/arm.2016.40.2.362
Seo TG , Kim DH , Kim IS , Son ES .
Department of Rehabilitation Medicine, Keimyung University School of Medicine, Daegu, Korea. ri-pheonix@hanmail.net
Pain Research Center, Keimyung University School of Medicine, Daegu, Korea.
Institute for Medical Science, Keimyung University School of Medicine, Daegu, Korea.
Department of Neurosurgery, Keimyung University School of Medicine, Daegu, Korea.
Department of Orthopedic Surgery, Keimyung University School of Medicine, Daegu, Korea.
Abstract

Patients with C5 or C6 radiculopathy complain of shoulder area pain or shoulder girdle weakness. Typical idiopathic neuralgic amyotrophy (INA) is also characterized by severe shoulder pain, followed by paresis of shoulder girdle muscles. Recent studies have demonstrated that magnetic resonance neurography (MRN) of the brachial plexus and magnetic resonance imaging (MRI) of the shoulder in patients with INA show high signal intensity (HSI) or thickening of the brachial plexus and changes in intramuscular denervation of the shoulder girdle. We evaluated the value of brachial plexus MRN and shoulder MRI in four patients with typical C5 or C6 radiculopathy. HSI of the brachial plexus was noted in all patients and intramuscular changes were observed in two patients who had symptoms over 4 weeks. Our results suggest that HSI or thickening of the brachial plexus and changes in intramuscular denervation of the shoulder girdle on MRN and MRI may not be specific for INA.

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