Brachial Plexus Lower Trunk Posterior Division

Shared Innervation

Triceps Brachii

Extensor Digitorum Communis

Extensor Digiti Minimi

Extensor Carpi Ulnaris

Anconeus

Abductor Pollicis Longus

Extensor Pollicis Brevis

Extensor Pollicis Longus

Extensor Indicis

Outcome: All Posterior divisions join to form the Posterior Cord

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