Abstract:Sum marySpinal accessory nerve palsy commonly occurs as a result of iatrogenic injury, usually during lymph node excision in the posterior cervical triangle. Numerous alternative etiologies are described. Trauma is the most common cause of non-iatrogenic palsy. Sometimes, the cause of the palsy cannot be identified. Here, we report four atypical cases of isolated spinal accessory nerve palsy leading to trapezius muscle dysfunction. In one patient, accessory nerve palsy developed after reduction mammaplasty and… Show more
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