The arteria dorsalis pedis, the continuation of the anterior tibial, passes forward from the ankle-joint along the tibial side of the dorsum of the foot to the proximal part of the first intermetatarsal space, where it divides into two branches, the first dorsal metatarsal and the deep plantar.
Relations.—This vessel, in its course forward, rests upon the front of the articular capsule of the ankle-joint, the talus, navicular, and second cuneiform bones, and the ligaments connecting them, being covered by the integument, fascia and cruciate ligament, and crossed near its termination by the first tendon of the Extensor digitorum brevis. On its tibial side is the tendon of the Extensor hallucis longus; on its fibular side,the first tendon of the Extensor digitorum longus, and the termination of the deep peroneal nerve. It is accompanied by two veins.
Peculiarities in Size.—The dorsal artery of the foot may be larger than usual, to compensate for a deficient plantar artery; or its terminal branches to the toes may be absent, the toes then being supplied by the medial plantar; or its place may be taken altogether by a large perforating branch of the peroneal artery.
Position.—This artery frequently curves lateralward, lying lateral to the line between the middle of the ankle and the back part of the first interosseous space.
Branches.—The branches of the arteria dorsalis pedis are:
The lateral tarsal artery
The medial tarsal arteries
The arcuate artery
The first dorsal metatarsal artery
The deep plantar artery