The flexor digitorum longus is one of the muscles of the deep group within the posterior compartment of the leg.
The leg is comprised of anterior, lateral and posterior compartments. The posterior (flexor) compartment consists of two groups of muscles: a superficial group and a deep group, which are separated by a deep fascial layer.
Muscles of the superficial group within the posterior compartment of the leg
Muscles of the deep group within the posterior compartment of the leg
- Medial side of posterior surface of the tibia
- Plantar surfaces of bases of distal phalanges of the lateral four toes
- Flexes lateral four toes
- Tibial nerve: S2, S3
- Posterior tibial artery