THE DEEP BRANCH OF THE ULNAR NERVE IN GUYONS CANAL - BRANCHING AND INNERVATION OF THE HYPOTHENAR MUSCLES

Thirty-seven embalmed, unpaired cadaver hands were dissected to deline ate and classify the innervation of the hypothenar musculature. The de ep branch of the ulnar nerve passed between the abductor digiti minimi and flexor digiti minimi and then pierced the opponens in all specime ns. All branching occurred on the ulnar aspect of the deep branch of t he ulnar nerve, A classification based on proximity of the different b ranches is prepared. Five different patterns have been noted.