Which tendon is frequently absent in upper limb?
The palmaris longus may not always be present. It has a short belly and long tendon. It originates from medial epicondyle of humerus. Distally, it passes over the flexor retinaculum with which its fibers mingle and is attached to the palmar aponeurosis.
Flexor carpi ulnaris
Flexor digitorum profundus
Extensor carpi radialis brevis
Palmaris longus