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Recent advances in surgical treatment of the brachial plexus have allowed for more extensive repairs, and elbow extension now ranks among the desirable functions to be restored. The purpose of this study is to describe the authors' experience using the medial thoracic nerve to reinnervate the triceps brachii muscle in patients with C5-7 brachial plexus palsy.
METHODS: This is a retrospective study of the outcome of restoration of elbow extension in her 12 patients who underwent transplantation from the medial pectoral muscle to the radial nerve or the long head of the triceps brachii muscle.
RESULTS: The radial nerve was directed to the long head of the triceps brachii in 3 of her patients and the branch in 9 of her patients. The graft was used in 6 of her patients. Results were rated M4 and M3 for elbow extension by the Medical Research Council in 7 (58%) and 5 (42%) patients, respectively.
CONCLUSIONS: The medial thoracic nerve is a reliable donor to restore elbow extension in patients with C5-7 nerve root injury.
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