Muscles of Lower Limb and Pelvic Girdle

Psoas major — Origin

Vertebrae T12–L5.

Psoas major — Insertion

Lesser trochanter of femur

Psoas major — Action

Flex hip joint and flex trunk

Psoas minor — Origin

Vertebrae T12-L1

Psoas minor — Insertion

iliopubic eminence

Psoas minor — Action

Minor flexion of trunk

Iliacus — Origin

Iliac fossa

Iliacus — Insertion

Lesser trochanter of femur

Iliacus — Action

Flex hip joint

Iliacus — Innervation

Femoral n.

Iliopsoas — Origin

Combined psoas major and iliacus fibers, pass under inguinal ligament

Iliopsoas — Insertion

Lesser trochanter of femur

Iliopsoas — Action

flex hip joint

Gluteus maximus — Origin

ilium, posterior sacrum, and coccyx

Gluteus maximus — Insertion

Gluteal tuberosity of femur and iliotibial tract of fascia lata

Gluteus maximus — Action

Extends and laterally rotate hip joint

Gluteus maximus — Innervation

Inferior gluteal n.

Gluteus medius — Origin

Gluteal lines of ilium, iliac crest

Gluteus medius — Insertion

Greater trochanter of femur

Gluteus medius — Action

Abducts hip joint

Gluteus medius — Innervation

Superior gluteal n.

Gluteus minimus — Origin

Gluteal lines of ilium

Gluteus minimus — Insertion

greater trochanter of femur

Gluteus minimus — Action

Abducts hip joint

Gluteus minimus — Innervation

Superior gluteal n.

Tensor fasciae latae — Origin

Anterior superior iliac spine

Tensor fasciae latae — Insertion

Iliotibial tract of fascia lata

Tensor fasciae latae — Action

Flexes, abducts, and medially rotates hip joint

Tensor fasciae latae — Innervation

Superior gluteal n.

Piriformis — Origin

Anterior sacrum

Piriformis — Insertion

Greater trochanter of femur

Piriformis — Action

Laterally rotates hip joint

Gemellus superior — Origin

Ischial spine

Gemellus superior — Insertion

Greater trochanter of femur

Gemellus superior — Action

Laterally rotates hip joint

Obturator internus — Origin

Medial margin of obturator foramen

Obturator internus — Insertion

Greater trochanter of femur

Obturator internus — Action

Laterally rotates hip joint

Gemellus inferior — Origin

Ischial tuberosity.

Gemellus inferior — Insertion

Greater trochanter of femur

Gemellus inferior — Action

Laterally rotates hip joint

Quadratus femoris — Origin

ischial tuberosity.

Quadratus femoris — Insertion

Greater trochanter of femur

Quadratus femoris — Action

Laterally rotates hip joint

Sartorius — Origin

Anterior superior iliac spine.

Sartorius — Insertion

Proximal medial tibia

Sartorius — Action

Flex knee joint; flex and laterally rotate hip joint

Sartorius — Innervation

Femoral n.

Rectus femoris — Origin

Anterior inferior iliac spine

Rectus femoris — Insertion

Tibial Tuberosity through quadriceps tendon and patellar ligament

Rectus femoris — Action

Extends knee joint, Flex hip joint

Rectus femoris — Innervation

Femoral n.

Vastus lateralis — Origin

Linea aspera lateral lip.

Vastus lateralis — Insertion

Tibial Tuberosity through quadriceps tendon and patellar ligament

Vastus lateralis — Action

Extends knee joint

Vastus lateralis — Innervation

Femoral n.

Vastus medialis — Origin

Linea aspera, medial lip

Vastus medialis — Insertion

Tibial Tuberosity through quadriceps tendon and patellar ligament

Vastus medialis — Action

Extends knee joint

Vastus medialis — Innervation

Femoral n.

Vastus intermedius — Origin

Anterior proximal femur

Vastus intermedius — Insertion

Tibial Tuberosity through quadriceps tendon and patellar ligament

Vastus intermedius — Action

Extends knee joint

Vastus intermedius — Innervation

Femoral n.

Gracilis — Origin

Inferior ramus of pubis

Gracilis — Insertion

Proximal medial tibia

Gracilis — Action

Adducts hip joint, flexes knee joint

Gracilis — Innervation

Obturator n.

Pectineus — Origin

Pectineal line of pubis.

Pectineus — Insertion

Pectineal line of femur.

Pectineus — Action

Adducts and flex hip joint p

Pectineus — Innervation

Femoral n.

Adductor longus — Origin

Pubis

Adductor longus — Insertion

Linea aspera of femur

Adductor longus — Action

Adduct and flex hip joint

Adductor longus — Innervation

Obturator n.

Adductor brevis — Origin

inferior ramus of pubis

Adductor brevis — Insertion

Linea aspera of femur

Adductor brevis — Action

Adducts and flex hip joint

Adductor brevis — Innervation

Obturator n.

Adductor magnus — Origin

Inferior ramus of pubis and ischial tuberosity

Adductor magnus — Insertion

Linea aspera and adductor tubercle of femur

Adductor magnus — Action

Adducts and extends hip joint

Adductor magnus — Innervation

obturator n.

Biceps femoris long head — Origin

Ischial tuberosity.

Biceps femoris long head — Insertion

Head of fibula.

Biceps femoris long head — Action

Flexes knee joint, extends hip joint

Biceps femoris long head — Innervation

Tibial n.

Biceps femoris short head — Origin

Linea aspera of femur

Biceps femoris short head — Insertion

Head of fibula.

Biceps femoris short head — Action

Flexes knee joint

Biceps femoris short head — Innervation

Common fibular (peroneal) n.

Semitendinosus — Origin

Ischial tuberosity.

Semitendinosus — Insertion

Proximal medial tibia.

Semitendinosus — Action

Flex knee joint, extend hip joint

Semitendinosus — Innervation

Tibial nerve

Semimembranosus — Origin

Ischial tuberosity.

Semimembranosus — Insertion

Proximal posterior tibia.

Semimembranosus — Action

Flex knee joint, extend hip joint

Semimembranosus — Innervation

Tibial n.