Gluteal Muscle (O, I, BS, INN, F)

gluteus MAXimus Origin

• posterior iliac crest

• coccyx

• sacrotuberous & sacrospinous ligament

gluteus MAXimus Insertion

• ilitibial tract of fascia lata

• gluteal tuberosity

gluteus MAXimus Blood Supply

inferior and superior gluteal artery

gluteus MAXimus INNervation

inferior gluteal (L5-S2)

gluteus MEDius Function

• extend thigh at hip

• LAT rotate thigh at hip

• ABduct thigh

• stabilize knee and hip joint

gluteus MEDius Origin

• gluteal aponerousis

• dorsal ilium b/n ANTerior & POSTerior gluteal lines

gluteus MEDius Insertion

lateral facet (greater trochanter)

gluteus MEDius Blood Supply

branches from posterior trunk

gluteus MEDius INNervation

superior gluteal (L4-S1)

gluteus MEDius Function

• ABduct thigh

• LAT & MED rotate hip

gluteus MINimus Origin

dorsal ilium b/n ANTerior & INFerior gluteal line

gluteus MINimus Insertion

anterior lateral angle (greater trochanter)

gluteus MINimus Blood Supply

branches from posterior trunk

gluteus MINimus INNervation

superior gluteal (L4-S1)

gluteus MINimus Function

• ABduct thigh

• LAT & MED rotate hip

TFL Origin

lateral aspect of iliac crest

TFL Insertion

• iliotibial tract

• fascia lata

TFL Blood Supply

branches of posterior trunk

TFL INNervation

superior gluteal (L4-S1)

TFL Function

• ABduct thigh

• MED rotate thigh

• stabilize knee and hip joint

piriformis Origin

anterior sacrum

piriformis Insertion

medial superior side (greater trochanter)

piriformis Blood Supply

branches from anterior trunk

piriformis INNervation

nerve of piriformis (S1-S2)

piriformis Function

• LAT rotate thigh

• ABDuct thigh

obturator internus Origin

anterior wall of obturator internus

obturator internus Insertion

medial surface (grater trochanter)

obturator internus Blood Supply

branches of anterior trunk

obturator internus INNervation

nerve of obturator (L5-S1)

obturator internus Function

• LAT rotate thigh

• ABduct thigh

superior gemellus Origin

dorsal surface of ischial spine

superior & inferior gemellus Insertion

medial surface (greater trochanter)

superior & inferior gemellus Blood Supply

branches from anterior trunk

superior gemellus INNervation

nerve of obturator (L5-S1)

superior & inferior gemellus Function

• LAT rotate thigh

• ABduct thigh

inferior gemellus Origin

dorsal surface of ischial tuberosity

inferior gemellus INNervation

nerve of quadratis femoris (L5-S1)

quadratus femoris Origin

lateral aspect of ischial tuberosity

quadratus femoris Insertion

quadrate tubercle (intertrochanteric crest)

quadratus femoris Blood Supply

branches form anterior trunk

quadratus femoris INNervation

nerve of quadratus femoris (L5-S1)

quadratus femoris Fucntion

LAT rotate thigh