Flexor Digitorum Profundus: Key Hand Muscle Explained
The flexor digitorum profundus, a crucial hand muscle, has its belly in the forearm but is functionally a hand muscle. It was first described by 18th-century anatomist Bernard Siegfried Albinus.
Originating from the upper ulna bone, this muscle inserts at the tips of the fingers. It's innervated by the anterior interosseous and ulnar nerves, and relies on the anterior interosseous artery for blood supply. The flexor digitorum profundus works with the flexor pollicis longus and pronator quadratus to fill out the forearm. Its long tendons extend over the wrist and hand metacarpals, enabling it to flex the fingers.
Injury to this muscle or its associated nerves can lead to loss of finger dexterity.
The flexor digitorum profundus, a key muscle for finger movement, has a complex structure and function. Its proper functioning is vital for hand dexterity, and injuries can significantly impact this ability.
