Trauma of the adult brachial plexus

Lesions can be situated at any level from the base of the nerve roots to the division of the brachial plexus in the axillary region and several types of lesions can be differentiated:

• Supraciavicular lesions at root or primary trunk level (75% of cases). • Infra-and retro-clavicular lesions of secondary trunks (10% of cases). • Terminal branches (15% of cases).