Gracilis Body and inferior ramus of pubic Medial surface of tibia near the Adducts thigh at hip joint, medially Obturator bone knee joint rotates thigh, and flexes leg at knee joint. Pectineus Superior ramus of pubis Just inferior to the lesser trochanter Adducts and flexes thigh, assists with Femoral medial rotation of thigh MUSCLES OF THE ORIGIN INSERTION ACTION NERVE POSTERIOR LEG Tibialis posterior Posterior surfaces of tibia and fibula; Navicular, with slips to cuneiform; Plantar flexion and inversion of foot Tibial interosseous membrane cuboid; metatarsals 2-4 Flexor digitorum Posterior surface of tibia Distal phalanges of digits 2-5 Plantar flexion of foot; flexion of toes Tibial longus Flexor hallucis longus Posterior surface of fibula; Distal phalanx of great toe Plantar flexion of foot; flexion of great Tibial interosseous membrane toe Soleus Head of fibula; posterior surface of With gastrocnemius into calcaneus Plantar flexion of foot Tibial fibula; medial aspect of tibia via calcaneal tendon Gastrocnemius Medial and lateral condyles of With soleus into calcaneus via Plantar flexion of foot; flexion of the Tibial calcaneal tendon leg Popliteus Lateral surface of lateral condyle Posterior surface of tibia just below Flexion of leg; medial rotation of leg to Tibial condyles unlock knee prior to leg flexion Plantaris Lateral supracondylar line of femur Posterior calcaneus via calcaneal Assists in plantar flexion of foot and Tibial tendon flexion of leg
Gracilis Body and inferior ramus of pubic bone Medial surface of tibia near the knee joint Adducts thigh at hip joint, medially rotates thigh, and flexes leg at knee joint. Obturator Pectineus Superior ramus of pubis Just inferior to the lesser trochanter Adducts and flexes thigh, assists with medial rotation of thigh Femoral MUSCLES OF THE POSTERIOR LEG ORIGIN INSERTION ACTION NERVE Tibialis posterior Posterior surfaces of tibia and fibula; interosseous membrane Navicular, with slips to cuneiform; cuboid; metatarsals 2-4 Plantar flexion and inversion of foot Tibial Flexor digitorum longus Posterior surface of tibia Distal phalanges of digits 2-5 Plantar flexion of foot; flexion of toes Tibial Flexor hallucis longus Posterior surface of fibula; interosseous membrane Distal phalanx of great toe Plantar flexion of foot; flexion of great toe Tibial Soleus Head of fibula; posterior surface of fibula; medial aspect of tibia With gastrocnemius into calcaneus via calcaneal tendon Plantar flexion of foot Tibial Gastrocnemius Medial and lateral condyles of With soleus into calcaneus via calcaneal tendon Plantar flexion of foot; flexion of the leg Tibial Popliteus Lateral surface of lateral condyle Posterior surface of tibia just below condyles Flexion of leg; medial rotation of leg to unlock knee prior to leg flexion Tibial Plantaris Lateral supracondylar line of femur Posterior calcaneus via calcaneal tendon Assists in plantar flexion of foot and flexion of leg Tibial
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