The Anatomical record
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The Anatomical record · Dec 1997
Case ReportsAnatomical variant of the lateral pectoral nerve innervating the anterior portion of the deltoid muscle: a case report.
The deltoid muscle is innervated by the axillary nerve. There is no collateral nerve supply described for this muscle. Palsy of the axillary nerve is common in shoulder trauma due to its close relationship to the surgical neck of humerus. ⋯ A branch of the lateral pectoral nerve could provide collateral nerve supply to the deltoid muscle. The frequency of this anatomical variation requires further exploration.