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Repair of the brachial plexus directed to restoring elbow flexion.

Attention is directed to certain variations in the composition and structural features of the brachial plexus which provide several alternative routes for motor nerve fibers and regenerating axons to reach the elbow flexor muscles. The possibility that such aberrant pathways can exist should be taken into consideration when assessing the effectiveness and value of controversial methods of plexus repair for the restoration of elbow flexion.