Posttraumatic Focal Dystonia of the Shoulder

摘要: Focal posttraumatic shoulder dystonia is a rare and not easily identifiable entity. Its true pathophysiologic nature, predisposing factors, disease course remain debatable.This article describes case of 40-year-old man with late symptoms focal after peripheral trauma his left girdle. The was indirectly injured from the impact fall off motorbike 3 years earlier. He referred to authors' institution because remarkable reduction arm abduction, muscle spasms, circumscribed hypertrophy trapezius were noted while head neck in neutral position had full range motion. fixed elevated posture compared contralateral shoulder. A continuous burning pain localized over area hypertrophied muscle, radiating ipsilateral side neck. Dystonic movements trapezius, rhomboid, supraspinatus muscles observed. abduction significantly decreased, any repetitive effort for induced an exaggeration movement disorder, leading more pronounced elevation.Plain radiographs magnetic resonance imaging revealed suprascapular tendinitis no other abnormalities. Repeated needle electromyography neurography accessory nerve on both sides normal. Injections botulinum toxin effective resolution abnormal posture.