13,14) Apart from this branch, the bulk of the ulnar nerve passes through the ulnar canal (Guyon's canal) at the wrist and divides into a superficial branch which provides motor innervation to the palmaris brevis
and skin sensation to the palmar surface of D5 and medial half of D4.
7) With the endoscopic technique the palmaris brevis
muscle & palmar fascia were not divided, and that could be the reason for it.
palmaris brevis are dorsal with respect to the tendons of insertion of the m.
palmaris brevis is between the two tendons of insertion of the m.
palmaris brevis and the tendons of insertion of the
In addition there is also the palmaris brevis
innervated by the superficial branch of the ulnar nerve.
Its roof is formed by the palmar carpal ligament, (antebrachial fascia), and the palmaris brevis
muscle, the floor is formed by the hypothenar muscles and the flexor retinaculum.