Gluteal Region Muscles Flashcards
Psoas Major
O: Bodies and TVP’s of T12-L5
I: Lesser trochanter of femur
N: L1-4
A: Laterally flex vertebral column
Flex femur at hip
Psoas Minor
O: Vertebral bodies of T12-L1
I: Pectineal line of the pubis
N: L1
A: Weak flexor of the lumbar spine
Iliacus
O: Iliac fossa
I: Lesser trochanter of femur
N: Femoral nerve
A: Flex the femur
Gluteus Maximus
O: Iliac crest & sacrum + coccyx
I: Gluteal tuberosity & iliotibial tract (IT band)
N: Inferior gluteal nerve (L5, S1,2)
A: Extend and laterally rotate femur.
(Bursae are located between gluteus max and ischial tuberosity & greater trochanter)
Gluteus Medius
O: Dorsal ilium
I: Greater trochanter of femur
N: Superior gluteal nerve (L5,S1)
A: Abduct and medially rotate femur;
during gait, supports body
on one leg while other leg
swings forward
Gluteus Minimus
O: Dorsal ilium
I: Greater trochanter of femur
N: Superior gluteal nerve (L5,S1)
A: Abduct and medially rotate femur;
assists gluteus medius in
supporting the body during
gait
Tensor Fascia Lata
O: ASIS (anterior superior iliac spine), Anterior Iliac Crest
I: Iliotibial tract–> (connects to lat condyle of tibia)
N: Superior gluteal nerve (L4,5)
A: Abduct, medially rotate, and flex femur;
keep knee extended via IT tract (along with gluteus maximus)
Obturator Internus
O: Obturator membrane
I: Greater trochanter of femur (90degrees around lesser sciatic notch)
N: Nerve to obturator internus (L5,S1)
A: Laterally rotate femur
Superior and Inferior Gemelli
O: Ischium
I: Greater trochanter of femur
N: Nerves to obturator internus & quadratus femoris (L5,S1)
A: Laterally rotate femur
Quadratus Femoris
O: Ischial tuberosity
I: Quadrate tubercle of femur
N: Nerve to quadratus femoris (L5,S1)
A: Laterally rotate femur
Obturator Externus
O: Obturator membrane (outer)
I: Greater trochanter of femur
N: Obturator nerve. (L3,4)
A: Laterally rotate femur
Piriformis
O: Anterior sacrum
I: Greater trochanter
N: S 1,2
A: Abduct and laterally rotate femur
