Muscles of the Hip 1. Tensor Fasciae Latae O: iliac crest I: lateral femoral condyle Action: abducts the thigh Nerve: gluteal nerve 2. Gluteus Maximus O: ilium I: femur Action: abduct the thigh Nerve: gluteal
Muscles of the Hip 3. Gluteus Medius O: Ilium I: greater trochanter Action: abduct the thigh Nerve: gluteal 4. Gluteus Minimus Action: abduct the thigh
Muscles of the Upper Leg (Quadriceps) 5. Rectus Femoris O: lower iliac spine I: tibial tuberosity & patella Action: upper leg flexion & lower leg extension Nerve: femoral nerve 6. Vastus Lateralis O: upper femur I: tibial tuberosity & patella Action: upper leg flexion & lower leg extension Nerve: femoral nerve Special: Vast- large
Muscles of the Upper Leg (Quadriceps cont.) 7. Vastus Intermedius O: upper femur I: tibial tuberosity & patella Action: upper leg flexion & lower leg extension Nerve: femoral nerve 8. Vastus Medialis O: upper femur I: tibial tuberosity & patella Action: upper leg flexion & lower leg extension Nerve: femoral nerve
Muscles of the Upper Leg (Hamstrings) 9. Biceps Femoris O: ischial tuberosity I: upper tibia & fibula Action: upper leg extension & lower leg flexion Nerve: tibial nerve Special: located on the lateral side of the leg 10. Semitendinosus O: ischial tuberosity I: medial condyle of the tibia Action: upper leg extension & lower leg flexion Nerve: tibial nerve
Muscles of the Upper Leg (hamstrings cont.) 11. Semimembranosus O: ischial tuberosity I: medial condyle of the tibia Action: upper leg extension & lower leg flexion Nerve: tibial nerve
Muscles of the Upper Leg 12. Sartorius Action: outward rotation Nerve: femoral nerve Special: called the tailor s muscle (Leg Adductors) 13. Adductor Longus Action: adducts the leg Nerve: obturator nerve
Muscles of the Upper Leg (Leg adductors cont.) 14. Adductor Brevis Action: adducts the leg Nerve: obturator nerve Special: brevis- short 15. Adductor Magnus Action: adducts the leg Nerve: obturator nerve 16. Gracilis Action: adducts the leg Nerve: obturator nerve
Adductors of the Hip Joint 5 muscles act as adductors Adductor magnus is also an extensor of hip joint Gracilis also is flexor of knee Pectineus, Adductor brevis and Adductor longus adduct the femur Pectineus Adductor brevis Adductor longus Adductor magnus
17. Iliopsoas Action: hip flexor Nerve: lumbar nerve Muscles of the Upper Leg Muscles of the Lower Leg. 18. Tibialis Anterior O: upper tibia I: 1st metatarsal Action: dorsiflexion Nerve: tibial nerve
Muscles of the Lower Leg 19. Extensor Digitorum O: upper tibia I: phalanges Action: dorsiflexion and extend toes (2-5) Nerve: tibial nerve 20. Extensor Hallicus Longus O: tibia I: big toe Action: extend big toe Nerve: tibial nerve Special: hallicus- big toe
Anterior Compartment of the Leg Extensor digitorum longus Tibialis anterior Peroneus tertius Extensor hallucis longus Extensor digitorum longus = extension of toes & ankle Extensor hallucis longus = extension of big toe & ankle Peroneus tertius = dorsiflexes and everts foot Tibialis anterior = dorsiflexes and inverts foot
Posterior Compartment 21. Gastrocnemius O: condyles of the femur I: calcaneus Action: plantar flexion Nerve: tibial nerve Special: achilles tendon attachment 22. Soleus O: upper tibia and fibula I: calcaneus Action: plantar flexion Nerve: tibial nerve Special: achilles tendon attachment
Posterior Compartment of the Leg Superficial Group of Plantar Flexors Gastrocnemius Plantaris Soleus Gastrocnemius = flexes knee and plantar flexes ankle Soleus = plantar flexes ankle Plantaris = flexes knee and plantar flexes ankle
Posterior Compartment 23. Flexor Hallicus Longus O: fibula I: big toe Action: Flex the big toe Nerve: tibial nerve 24. Flexor Digitorum Action: flex the digits (toes 2-5)
Lateral Compartment Lateral Compartment 25. Peroneus Longus Action: evert the foot Nerve: peroneal nerve 26. Peroneus Brevis Action: evert the foot Nerve: peroneal nerve
Lateral Compartment of the Leg Peroneus longus Peroneus brevis 2 muscles in this compartment Both plantar flex and evert the foot Provides lift and forward thrust