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Anatomy

Musculature EDL-EDB

QuestionAnswer
Extensor Digitorum Longus PA Lateral tibial condyle, superior medial fibula, interosseous membrane.
Extensor Digitorum Longus DA Middle and distal phalanges 2nd – 5th digits.
Extensor Digitorum Longus A MP, PIP and DIP extension of 2nd – 5th digits, ankle dorsiflexion.
Extensor Digitorum Longus N Deep peroneal (L5, S1).
Plantaris PA Lateral supracondylar line, oblique popliteal ligament.
Plantaris DA Calcaneus via calcaneal tendon.
Plantaris A Knee flexion, ankle plantarflexion,.
Plantaris N Tibial (S1, S2).
Popliteus PA Lateral condyle of femur, lateral meniscus.
Popliteus DA Posterior tibia superior to soleal line.
Popliteus A Tibial internal rotation to “unlock” knee, knee flexion. Retracts lateral meniscus.
Popliteus N Tibial (L4, L5, S1).
Flexor Hallicus Longus PA Inferior posterior fibula, inferior interosseous membrane.
Flexor Hallicus Longus DA Base of distal phalanx of hallux.
Flexor Hallicus Longus A MP and IP flexion of hallux, ankle plantar flexion.
Flexor Hallicus Longus N Tibial (S2, S3).
Flexor Digitorum Longus PA Posterior surface of tibia inferior to soleal line.
Flexor Digitorum Longus DA Base of distal phalanges of 2nd – 5th digits.
Flexor Digitorum Longus A MP, PIP, DIP flexion 2nd – 5th digits, ankle plantarflexion.
Flexor Digitorum Longus N Tibial (S2, S3).
Tibialis Posterior PA Posterior surface of fibula, posterior surface of tibia inferior to soleal line, interosseous membrane.
Tibialis Posterior DA Navicular tuberosity, 3 cuneiforms, cuboid, bases of 2nd - 4th metatarsals.
Tibialis Posterior A Ankle plantarflexion, foot inversion.
Tibialis Posterior N Tibial (L4, L5).
Peroneus Tertius PA Anterior inferior fibula and interosseous membrane.
Peroneus Tertius DA Dorsal surface of base of 5th metatarsal.
Peroneus Tertius A Ankle dorsiflexion, foot eversion.
Peroneus Tertius N Deep peroneal (S1).
Extensor Digitorum Brevis PA: Calcaneus, interosseous talocalcaneal ligament, inferior extensor retinaculum.
Extensor Digitorum Brevis DA: Medial slip (1 - aka extensor hallicus brevis): proximal phalanx of hallux. Lateral slips (3): join EDL tendons to 2nd - 4th digits.
Extensor Digitorum Brevis A: Medial slip: MP extension of hallux. Lateral slips: MP, PIP, DIP extension 2nd - 4th digits.
Extensor Digitorum Brevis N: Deep peroneal (L5, S1).
Created by: txst sum 2009