Muscles LE

Pectineus

Pectineus origin

superior rami of the pubis bone

Pectineus insertion

pectineal line of femur, just inferior to lesser trochanter

Pectineus nerve

Femoral nerve

Pectineus function

Adducts and flexes thigh, assists with medial rotation

Psoas Major

Psoas Major origin

transverse process of lumbar vertebrae, sides of bodies of T12-L5 vertebrae and intervertebral discs

Psoas Major insertion

lesser trochanter of the femur

Psoas Major nerve

Anterior rami of lumbar nerves L1,2,3

Psoas Major function

flexes the thigh, flexes the vertebral column laterally, balance the trunk, when sitting can flex the trunk

Psoas Minor

Psoas Minor origin

T12 and L1vertebral bodies and intervertebral discs

Psoas Minor insertion

iliopubic eminence

Psoas Minor nerve

Anterior rami of lumbar nerves L1,2,3

Psoas Minor function

weak trunk flexor

Iliacus

Iliacus origin

superior 2/3rds of the iliac fossa, ala of the sacrum and anterior sacroiliac ligament

Iliacus insertion

lesser trochanter of the femur and shaft inferior to it

Iliacus nerve

Femoral Nerve

Iliacus function

flexes the thigh and stabilizes hip joint, acts with psoas major

Iliopsoas

the combination of psoas major and the iliacus

Sartorius

Sartorius origin

Anterior Superior Iliac Spine and superior part of notch inferior to it

Sartorius insertion

superior part of medial surface of tibia (Pes Anserinus)

Sartorius nerve

Femoral Nerve

Sartorius function

Flexes, Abducts, and laterally rotates thigh at hip joint. Flexes leg at knee joint (medially rotating leg when knee is flexed)

Quadriceps tendon

Patellar ligament (Infrapatellar tendon)

Rectus Femoris

Rectus Femoris origin

anterior inferior iliac spine,and ilium superior to the acetabulum

Rectus Femoris insertion

common patella tendon (base of patella to tibial tubercle)

Rectus Femoris nerve

Femoral Nerve

Rectus Femoris function

Extend leg at knee joint; rectus femoris also steadies the hip joint and helps iliopsoas flex the thigh

Vastus Lateralis

Vastus Lateralis origin

Greater trochanter and lateral lip of linea aspera of the femur

Vastus Lateralis insertion

common patella tendon(base of patella to tibial tubercle)

Vastus Lateralis nerve

Femoral nerve

Vastus Lateralis function

extend leg at knee joint

Vastus Medialis

Vastus Medialis origin

intertrochanteric line and medial lip of linea aspera of femur

Vastus Medialis insertion

common patella tendon (base of patella to tibial tubercle)

Vastus Medialis nerve

Femoral Nerve

Vastus Medialis function

Extend leg at knee joint

Vastus intermedius

Vastus intermedius origin

anterior lateral surface of the shaft of the femur

Vastus intermedius insertion

common patella tendon (base of patella to tibial tubercle)

Vastus intermedius nerve

Femoral Nerve

Vastus intermedius function

Extend Knee

Adductor Longus

Adductor Longus origin

Body of pubis inferior to the crest

Adductor Longus insertion

middle 1/3 of linea aspera of femur

Adductor Longus nerve

Obturator Nerve

Adductor Longus function

Adducts the thighAdducts the thigh

Adductor Brevis

Adductor Brevis origin

body of the pubis and inferior rami

Adductor Brevis insertion

pectineal line and proximal part of linea aspera

Adductor Brevis nerve

Obturator Nerve

Adductor Brevis function

Adducts thigh and to some extent flexes it

Adductor Magnus

Adductor Magnus origin

Add: inferior ramus of pubis, ramus of ischium

HS: ischial tuberosity

Adductor Magnus insertion

Add: gluteal tuberosity, linea aspera, medial supracondylar line

HS: adductor tubercle of the femur

Adductor Magnus nerve

Add: Obturator

HS: Sciatic nerve (Tibial Division)

Adductor Magnus function

Adducts the thigh

Add: flexes thigh

HS: extends thigh

Gracilis

Gracilis origin

Body and inferior ramus of pubis

Gracilis insertion

superior part of medial surface of the tibia

Gracilis nerve

Obturator

Gracilis function

adducts thigh, flexes the leg and helps rotate leg medially

Obturator Externus

Obturator Externus origin

Margins of obturator foramen and obturator membrane

Obturator Externus insertion

Trochanteric fossa of femur

Obturator Externus nerve

Obturator Nerve

Obturator Externus function

laterally rotates thigh, steadies head of femur in acetabulum

Gluteus Maximus

Gluteus Maximus origin

ilium posterior to posterior gluteal line, dorsal surface of sacrum and coccyx sacrotuberous ligament

Gluteus Maximus insertion

iliotibial tract on the lateral condyle of the femur and gluteal tuberosity

Gluteus Maximus nerve

Inferior gluteal nerve

Gluteus Maximus function

Extends thigh and assists in lateral rotation, stabilizes the thigh and assists in rising from a seated position

Gluteus Medius

Gluteus Medius origin

External surface of ilium between anterior and posterior gluteal lines

Gluteus Medius insertion

Lateral surface of the greater trochanter

Gluteus Medius nerve

Superior Gluteal Nerve

Gluteus Medius function

Abducts femur at the hip joint, holds pelvis level over stance leg during walking, medial rotator of the hip

Gluteus Minimus

Gluteus Minimus origin

External surface of the ilium between gluteal lines

Gluteus Minimus insertion

Anterior surface of the greater trochanter

Gluteus Minimus nerve

Superior Gluteal Nerve

Gluteus Minimus function

Abducts femur at the hip, holds pelvis secure over stance leg, medial rotator of the hip

Tensor Fascia Lata

Tensor Fascia Lata origin

Lateral crest of the ilium between ASIS and the tubercle of the crest

Tensor Fascia Lata insertion

Iliotibial tract of fascia lata

Tensor Fascia Lata nerve

Superior Gluteal Nerve

Tensor Fascia Lata function

Abduct and medially rotate thigh, keeps pelvis level during ipsilateral swing

Piriformis

Piriformis origin

Anterior surface of the sacrum, sacrotuberous ligament

Piriformis insertion

Superior border of greater trochanter

Piriformis nerve

Branches from Anterior Rami S1,S2

Piriformis function

Lateral rotation of the extended hip, abduction ofthe flexed hip, stabilizes femoral head

Superior Gemelli

Superior Gemelli origin

Ischial spine