Evertor and invertor of foot
- 2.
- 3. Primary: Peroneus longus Peroneus brevis Secondary: Peroneus tertius Extensor digitorum longus Evertor of foot
- 5. Origin: Upper 2/3rd of the outer surface of fibula Insertion:undersurface of 1st cuneiform & 1st metatarsal Passes posteriorly lateral malleolus Primary pronator of subtalar joint Peroneus longus
- 7. Origin: lower 2/3rd of outer surface of the fibula Insertion: lateral side of the base of the 5th metatarsal Passes posteriorly to the lateral malleolus It is also primary pronator of subtalar joint Peroneus brevis
- 8. Eversion Planterflexion Peroneus brevis
- 9. Peroneus longus and brevis muscles pass lateral to the subtalar joint . Their primary function are pronation of subtalar joint Their tendon passes posterior but close to ankle axis and thus they are weak planter flexor Note:
- 10. Origin: Lower fibula Insertion: dorsal surface of 5 th metatarsal Passes anterior to lateral melleolus Peroneus tertius
- 12. Subtalar & talocrural joint axis
- 13. Origin: lateral condyle of tibia & anterior surface of fibula Insertion:middle & distal phalanges of four lateral toes Passes anterior to lateral malleolus Extensor digitorum longus
- 15. Tibialis anterior Tibialis posterior Flexor hallucis longus Flexor digitorum longus Extensor hallucis longus Invertors of foot
- 16.
- 17. Origin: Lateral tibial condyle & 2/3rd of the shaft Insertion: medial cuneiform & 1st metatarsal Passes anterior to medial malleolus Tibialis anterior muscles passes medial to subtalar axis and is a key supinator of the subtalar and transverse talar joints Tibialis anterior
- 19. Inversion Dorsiflexion of foot Support medial arch of foot Tibialis anterior
- 20. Origin: Posterior surface of the upper half of the adjacent surface of tibia & fibula Insertion: Navicular ,cuneiform & cuboid bones and base of the 2nd-5th metatarsal Passes posterior to medial melleolus Tibialis posterior
- 21. Planterflexion Inversion Tibialis posterior
- 22. Origin:middle half of the posterior surface of the fibula Insertion:distal phalanx of the great toe,planter surface Passes posteriorly to medial melleolus Flexor hallucis longus
- 23. Flexion of big toe Planterflexion Inversion of foot Flexor hallucis longus
- 24. Origin: middle 1/3rd of the posterior surface of tibia Insertion: base of the distal phalanges of each of lateral four toes Passes posterior to medial malleolus Flexor digitorum longus
- 25. Inversion of foot Planterflexion of ankle Toe flexion Flexor digitorum longus
- 26. Origin: Middle 2/3rd of inner surface of front of the fibula Insertion:top of the distal phalanx of the great toe Passes anteriorly Extensor hallucis longus
- 27. Dorsiflexion Inversion Extension of great toe Extensor hallucis longus
- 28.