Dorsal muscles of the foot (English)

The dorsal muscles of the foot are composed of two muscles: the extensor hallucis brevis and extensor digitorum brevis. Both muscles originate from the superolateral surface of the calcaneus and extend distally across the dorsum of the foot, lateral to the tendons of their ‘longus’ counterparts. The dorsal interossei are part of the fourth layer of plantar muscles of the foot, but are best viewed from this dorsal perspective. They are located between the metatarsal bones and consist of four bipennate muscles which arise from opposing surfaces of adjacent bones. The first (most medial) dorsal interosseus muscle inserts into the medial aspect of the base of the proximal phalanx of the second toe, while the lateral three muscles insert into the lateral aspect of the bases of the proximal phalanges of the toes 2-4.