Posterior Hip

Question 1

Gluteus Maximus OIAs

Answer 1

O Posterior Iliac Crest, Posterolateral Sacrum & Coccyx; Posterior Sacrotuberous Ligament & ThoracoLumbar Fascia

I Illiotibial Band & the Gluteal Tuberosity of the Femur

As ALL Actions: Thigh @ the Hip Joint
ALL Fibers: Extension & External Rotation

UPPER Fibers: ABduction

LOWER Fibers: ADDuction

Question 2

Gluteus Medius OIAs

Answer 2

O External Ilium bet/the Posterior & Anterior Gluteal Lines

I Lateral Aspect of the Greater Trochanter of the Femur

As ALL Thigh @ Hip Joint

ALL Fibers: ABduction
Anterior Fibers: Flexion & Internal Rotation
Posterior Fibers: Extension & External Rotation

Question 3

Gluteus Minimus OIAs

Answer 3

O External Ilium bet/the Anterior & Inferior Gluteal Lines

I Anterior Aspect of the Greater Trochanter

As ALL Actions Thigh @ the Hip

ALL Fibers: ABduction
Anterior Fibers: Flexion & Internal Rotation
Posterior Fibers: Extension & External Rotation

Question 4

Piriformis OIAs

Answer 4

O Internal Sacrum

I Superior Aspect of the Greater Trochanter of the Femur

As External Rotation of the Thigh @ the Hip Joint & ABduction of the Thigh @ the Hip Joint When the Hip is Flexed

Question 5

“Lateral Rotators” (location, orientation & primary action)

Answer 5

Deep to Gluteus Maximus, mostly Horizontal line of pull to stabilize the pelvic girdle. Primary action is External Rotation