What is Flexor Digitorum Longus?
Flexor Digitorum Longus Muscle Introduction The Flexor Digitorum Longus (FDL) is a long, slender muscle situated in the deep posterior compartment of the leg. It plays a crucial role in lower limb function, particularly in flexing the lateral four toes and aiding in balance and gait. Although smaller and less robust compared to other leg muscles, the FDL's contribution to fine motor control and stabilization during dynamic movement is indispensable. Anatomy Origin The FDL originates from the posterior surface of the tibia, specifically from the middle third, just below the soleal line. Insertion The muscle travels downward, transitioning into a tendon that passes behind the medial malleolus. It then enters the sole of the foot, where it divides into four tendinous slips, each inserting on the base of the distal phalanges of the second to fifth toes. Nerve Supply Tibial nerve (a branch of the sciatic nerve), primarily arising from the nerve roots L5 to S2. ...