Deep Posterior Hip Muscles

Question 1

The ____ _____ connects the femur to the anterior pelvis. It also supports the neck of the femur and stabilizes the femur in the hip socket when walking or running

Answer 1

Obturator Externus

Question 2

The ____ ____ lines the interior of the lesser pelvis and its outer membrane acts as an attachment site for the levator ani muscle (making up the pelvic floor)

Answer 2

Obturator Internus

Question 3

The ____ acts as reinforcements for obturator internus. They run along either side of the tendon but do not connect to the inside of the pelvis

Answer 3

Gemelli (gemellus superior and inferior)

Question 4

The ___ ___ works very close to the hip joint to create stability of the femur in the acetabulum

Answer 4

Quadratus femoris

Question 5

The _____ connects the sacrum to the femur and crosses the sacroiliac joint. A section of the sciatic nerve often runs through this muscle

Answer 5

Piriformis

Question 6

Which deep posterior hip muscles are used for lateral rotation

Answer 6

Quadratus femoris, obturator externus, obturator internus, gemelli, piriformis

Question 7

Which deep posterior hip muscle(s) are used for medial rotation

Answer 7

Piriformis (above 60 degrees of flexion)

Question 8

Which deep posterior hip muscle(s) are used for adduction

Answer 8

Quadratus femoris and obturator externus

Question 9

Which deep posterior hip muscle(s) are used for abduction

Answer 9

Obturator internus, gemelli, piriformis

Question 10

Which deep posterior hip muscle(s) are used for extension

Answer 10

Piriformis

Question 11

Which deep posterior hip muscle(s) are used for stabilizing the femur and pelvis

Answer 11

Quadratus femoris, Obturator externus, Obturator internus, gemelli, piriformis