The flexor carpi radialis and flexor carpi ulnaris contribute much of the muscle mass on the inner front side of the forearm.
Origin
The flexor carpi radialis and flexor carpi ulnaris have a common tendon for attachment on the inner condyle of the humerus at the upper end.
Insertion
The ulnaris inserts on the fifth metacarpal bone.
Function
Flexion and adduction (ulna flexion) of the wrist. It is mainly a flexor of the wrist and stabilizer of the elbow joint.
