Origin
Humerus – medial epicondyle.
Insertion
The tendon is inserted into the palmar aponeurosis.
Blood supply
Ulnar artery.
Nerve supply
Median nerve.
Action
This muscle is responsible for flexing the hand at the wrist joint. It helps in fist formation.
Disease/Injury
The palmaris longus can be used as a graft during surgery for wrist and hand injuries.
Muscle Exercise
Wrist flexion exercises with the help of dumbbells help to strengthen the palmaris longus tendon.
Interesting facts
The palmaris longus is absent in 14 out of every 100 humans.
