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Adductor Magnus
Origin: rami of both pubis and ischium.
Insertion: linea aspera, adductor tubercle.
Action: adduction, some lateral rotation of hip/thigh.
Innervation: obturator n. some tibial n.
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Adductor Brevis
Origin: pubic bone(inferior ramus.)
Insertion: shaft of femur(posterior superior aspect.)
Action: adduction, some lateral rotation of hip/thigh.
Innervation: obturator n.
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Adductor Longus
Origin: pubic bone(between crest and symphysis.)
Insertion: linea aspera.
Action: adducts, flexes, some lateral rotation of hip/thigh.
Innervation: obturator n.
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Pectineus
Origin: pectin of pubic bone.
Insertion: shaft of femur(posterior superior aspect.)
Action: adducts and flexes hip/thigh.
Innervation: femoral n. & some obturator n.
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Gracilis
Origin: pubic bone(medial surface of body, inferior ramus.)
Insertion: tibia(superior medial surface below medial condyle.)
Action: adduction of hip/thigh, some flexion of leg/knee.
Innervation: obturator n.
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Vastus Medialis
Origin: linea aspera(medial lip), intertrochanteric line.
Insertion: tibial tuberosity(via. patella/patellar ligament.)
Action: flexion of leg/knee.
Innervation: femoral n.
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Vastus Intermedius
Origin: shaft of femur(anterior superior aspect.)
Insertion: tibial tuberosity(via. patella/patellar ligament.)
Action: flexion of leg/knee.
Innervation: femoral n.
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Rectus Femoris
Origin: anterior superior iliac spine, acetabulum(superior aspect.)
Insertion: tibial tuberosity(via. patella/patellar ligament.)
Action: flexion of hip/thigh, extension of leg/knee.
Innervation: femoran n.
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Vastus Lateralis
Origin: linea aspera(lateral lip), greater trochanter(inferior aspect.)
Insertion: tibial tuberosity(via. patella/patellar ligament.)
Action: extension of leg/knee.
Innervation: femoral n.
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Sartorius
Origin: anterior superior iliac spine.
Insertion: medial proximal tibia(below medial condyle.)
Action: flexion of hip/thigh.
Innervation: femoral n.
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Iliacus
Origin: iliac fossa.
Insertion: lesser trochanter of femur.
Action: flexes hip.
Innervation: femoral n.
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Psoas Minor - exists in roughly 60% of population
Origin: bodies of vertebrae T12-L1.
Insertion: illiopubic eminence.
Action: minor flexion of lumbar spine.
Innervation: lumbar nerve L1.
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Psoas Major
Origin: all lumbar vertebrae(transverse processes and bodies.)
Insertion: lesser trochanter of femur.
Action: flexes trunk & thigh.
Innervation: lumbar nerves(L1-L3.)
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Obturator Externus
Origin: obturator foramen(bony outer aspect), outer obturator membrane.
Insertion: trochanteric fossa.
Action: lateral rotation of hip/thigh.
Innervation: obturator n.
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Quadratus Femoris
Origin: ischial tuberosity.
Insertion: greater trochanter of femur(inferior posterior aspect.)
Action: lateral rotation of hip/thigh.
Innervation: n. to quadratus femoris.
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Gemellus Inferior
Origin: ischial tuberosity.
Insertion: greater trochanter of femur.
Action: lateral rotation, some abduction of hip/thigh.
Innervation: n. to quadratus femoris
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Gemellus Superior
Origin: ischial spine.
Insertion: greater trochanter of femur.
Action: lateral rotation, some abduction of hip/thigh.
Innervation: n. to obturator internus.
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Obturator Internus
Origin: obturator foramen(bony inner aspect), inner obturator membrane.
Insertion: greater trochanter of femur.
Action: lateral rotation, some abduction of hip/thigh.
Innervation: n. to obturator internus.
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Piriformis
Origin: anterior sacrum.
Insertion: greater trochanter of femur.
Action: lateral rotation, some abduction of hip/thigh.
Innervation: n. to piriformis.
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Gluteus Minimus
Origin: outer surface of ilium(between anterior and posterior gluteal lines.)
Insertion: greater trochanter of femur(anterior surface.)
Action: abducts, medially rotates hip/thigh.
Innervation: superior gluteal n.
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Tensor Fascia Latae
Origin: anterior crest of ilium, anterior superior iliac spine.
Insertion: iliotibial tract of fascia lata.
Action: flex, abduct, medially rotate hip/thigh.
Innervation: inferior gluteal n.
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Gluteus Medius
Origin: crest & outer surface of ilium(between anterior and posterior gluteal lines.)
Insertion: greater trochanter of femur(lateral surface.)
Action: abducts hip/thigh(anterior fibers flex/medially rotate, posterior fibers extend/laterally rotate.)
Innervation: superior gluteal n.
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Gluteus Maximus
Origin: posterior ilium, posterior inferior sacrum & coccyx, sacrotuberous ligament.
Insertion: gluteal tuberosity, iliotibial tract of fascia lata.
Action: extension, lateral rotation of thigh.
Innervation: inferior gluteal nerve.
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