Extensor digitorum

Extensor digitorum Origin

The extensor digitorum longusExtensor Front of shin; lifts toes upward while walking originates on the lateralAway from the midline of the body. side of the knee. A tendon attaches it to the lateral condyleOuter rounded bump at distal end; articulates with tibia and meniscus. of the tibiaShinbone; large, weight-bearing medial bone of the lower leg. and the anteriorThe front of the body or toward the front when standing in the anatomical position. surface of the fibulaSlender lateral leg bone; stabilizes ankle but bears little weight.. Take a look at that attachment point in the picture above.

Extensor digitorum Insertion

The extensor digitorumExtensor Back of forearm; extends fingers and wrist. is located on the anterior face of the lower leg. It breaks into multiple tendons just anterior to the tarsalsSeven ankle bones forming the hindfoot and midfoot.. Each tendon inserts into the middle and distal phalangesFinger bones; each finger has three (proximal, intermediate, distal), thumb has two. of the foot digits. Digit #1, the big toe, is the exception. These insertions enable the muscle to control the extension of these toes.

Extensor digitorum Actions

Toe Extension

Dorsiflexion