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Ant & Lat Leg

Nerve, blood supply, origin, insertion

QuestionOriginInsertionBlood SupplyInnervation
Extensor Digitorum Longus Lateral tibial condyle, proximal 3/4 of medial anterior surface of fibula and adjacent interosseous membrane Bases of middle and distal phalanges 2-4 Ant. and lat. branches of ant. tibial a Popliteal, lateral inferior genicula, peroneal perf, ant. tibial, ant. lat. malleolar, lat tarsal, metatarsal plantar, and digital aa Deep peroneal n.L5,S1
Peroneus Tertius Distal 1/3 of medial surface of fibula and adjoining interosseous membrane Medial part of dorsal surface of base & shaft of 5th metatarsal Ant. and lateral branches of ant. tibial; arcuate; 4th dorsal metatarsal a Deep peroneal n. L5,S1
Peroneus Longus Head and proximal 2/3 of lateral surface of fibula Lateral side of base of 1st metatarsal and medial cuneiform Superior and inferior branches of ant. tibial a; Popliteal, anterior tibial circumflex fibular, peroneal, peroneal perf, ant lat. malleolar, lat. calcaneal, lat. tarsal, arcuate, lat. and med. plantar aa Superficial peroneal n. L5,S1
Peroneus Brevis Distal 2/3 of lateral surface of fibula Tubercle on base of 5th metatarsal Same as peroneus longus Superficial peroneal n L5,S1
Tibialis Anterior Lateral condyle, proximal 1/2 of lateral tibial shaft, adjacent ant. interosseous membrane Medial & inferior surfaces of medial cuneiform and base of 1st metacarpal Medial and anterior branches of anterior tibial a. Anterior tibial recurrent a Deep peroneal n L4,L5
Extensor Hallucis Longus Middle 1/2 of medial surface of fibula and adjacent ant. interosseous membrane Dorsal aspect of base of distal phalanx of hallux Anterior tibial a. Peroneal perforating, anterior medial malleolar, and dorsalis pedis aa, branches of 1st ray with medial perforating branches Deep peroneal n. L5
Created by: PippaODU