PALMARIS BREVIS :

PALMARIS BREVIS

 

 

PALMARIS BREVIS :

 

PALMARIS BREVIS

PALMARIS BREVIS

palmaris brevis is a thin quadrilateral muscle.
it’s placed beneath the integument of the ulnar side of the hand.
it is act to fold the skin of the hypothenar eminance transversally.

 

ORIGIN : flexor retinaculum and palmar apponeurosis

 

INSERTION : palm

 

NERVE SUPPLY : superficial branch of ulnar nerve

 

ACTION/EXERCISE : pullson skin over hypothenar eminance depending the cup of the
palm and so improving grip

palmaris brevis is supplied by the palmar metacarpal artery.
it is the branch of deep palmar arch.

 

PALMARIS BREVIS

PALMARIS BREVIS

CLINICAL IMPORTANCE : Carpal tunnel syndrome is associated with
increased intracarpal canal pressure. The effect of tendon loading on intracarpal canal
pressures is documented in biomechanical studies.
Palmaris longus muscle in wrist extension induces the
greatest absolute increase in intracarpal canal pressure.
but still yet palmaris longus is not yet a proven independent risk factor
for the development of carpal tunnel syndrome.