Accessory nerve palsies may cause considerable functional disability and they unfortunately continue to occur as a complication of surgery in and, around the posterior triangle of the neck. Here the causes of accessory nerve palsies are reviewed and the symptoms and signs arising as a consequence are summarised. In addition, the various treatments and their indications are highlighted and discussed.
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Competing interests None.
Provenance and peer review Not commissioned; externally peer reviewed.
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