Muscles that act on the hip joint

Question 1

Gluteus Maximus

Answer 1

Posterior
Origin: Dorsal Ilium, sacrum & coccys
Inertion: Gluteal tuberosity of femur
Action: Major extensor of thigh

Question 2

Gluteus Medius

Answer 2

Posterior- largely covered by gluteus maximus
Origin: lateral surface of ilium
Inertion: short tendon into greater trochanter of femur
Action: Abducts and medially rotates thigh

Question 3

Gluteus Minimus

Answer 3

Posterior- deepest of all glutes
Origin: external surface of illium
Inertion: greater trochanter of femur
Action: Abducts and medially rotates thigh

Question 4

Piriformis

Answer 4

Posterior on hip deep to glutes
Origin: anterolateral surface of sacrum
Inertion: greater trochanter of femur
Action: Rotates extended thigh laterally

Question 5

Quadratus Femoris

Answer 5

Posterior on hip deep to glutes
Origin: inner surface of obturator membrane, greater sciatic notch, margins of obturator foramen
Inertion: greater trochanter of femur
Action: Rotates extended thigh laterally

Question 6

Iliopsoas

Answer 6

lliacus and psoas major

Question 7

lliacus

Answer 7

Anterior and medial
Origin: Iliac fossa, ala of sacrum
Inertion: lesser trochanter of femur via iliopsoas tendon
Action: prime mover in thigh flexion and flexing trunk

Question 8

Psoas Major

Answer 8

Anterior and medial to Iliacus
Origin: by fleshy slips from transverse processes, bodies, and discs of lumbar vertebrae and T12
Inertion:lesser trochanter of femur via iliopsoas tendon
Action:prime mover in thigh flexion and flexing trunk

Question 9

Pectineus

Answer 9

Medial compartment of thigh
Origin: pectineal line of pubis
Insertion: a line from lesser trochanter to the linea aspera on posterior aspect of femur
Action: Adducts, flexes, and medially rotates thigh