CASE: A 54-year-old man presented with a comminuted left midclavicle fracture that progressed to a symptomatic nonunion after nonsurgical management. Nonunion open reduction and internal fixation (ORIF) was performed, but a left brachial plexopathy developed 48 hours postoperatively. Imaging failed to demonstrate an emergent cause. The patient was monitored and completely recovered, with occasional neuralgia and mildly limited forward elevation of the shoulder. CONCLUSION: Development of a brachial plexopathy 48 hours after routine clavicle nonunion ORIF using plate fixation is an unusual complication. Future studies are needed to determine if this "wait-and-see" approach can be generalized to similar cases.
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