Muscles of Anterior compartment of lower leg

Muscles of Anterior compartment of lower leg

Muscle	Origin	insertion	nerve	action	comment
Tibialis anterior(TA)	Proximal lateral tibia(Gerdy’s tubercle)	Med. Cuneiform, plantar 1st metatarsal base	Deep peroneal	Dorsiflexion, invert foot	Test L4 motor function
Extensor hallucis longus(EHL)	Medial fibular, interosseous membrane	Base of distal phalanx of great toe	Deep peroneal	Dorsiflexion, extend great toe	Test L5 motor function
Extensor digitorum longus(EDL)	Lateral tibia condyle & proximal fibula	Base of middle & distal phalanges(4 toes)	Deep peroneal	Dorsiflexion, extend lateral 4 toes	Single tendon divides into four tendons
Peroneus tertius	Distal fibula, interosseous membrane	Base of 5th metatarsal	Deep peroneal	Dorsiflexion, evert foot(weak)	Often adjoined to the EDL

Ref) Netter’s concise orthopaedic anatomy P316