What Is the Flexor Digitorum Longus?
The flexor digitorum longus is one of three muscles in the lower leg bearing this name: the flexor digitorum longus, flexor digitorum brevis, and flexor digitorum superficialis. Responsible for flexing or curling all toes except the big toe, this muscle is found deep on the inner side of the back of the leg beneath the gastrocnemius and soleus, the large muscles of the calf. It runs downward over the tibia bone, crosses the ankle, and inserts at the base of each toe where it pulls downward on the bottom side of the distal phalange bones during muscle contraction.
