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The roots of the brachial plexus are abnormal. The C5, C6 and C7 nerve roots are thickened, wavey and hyperintense, and the dorsal ganglia appears displaced externally, with suggestion of pseudomeningocoele formation at the C6-7 foramen. The cervical spinal cord is normal, and the rootlets appear preserved. Denervation oedema with moderate atrophy of the rotator cuff muscles present. Fracture through the inferior angle of the right scapula. Prominence of the left C7 dorsal root ganglia may be related to injury. Anterior C6-C7 fusion noted.
Likely ganglion/post ganglionic avulsion of the C5 to C7 nerve roots.