Lecture 15 Flashcards
Pectineus Action
hip adduction
slightly flexes hip
assists with hip lateral rotation
Pectineus PA
superior pubic ramus
Pectineus DA
pectineal line of femur
Pectineus Nerve Innervation
femoral nerve L2, L3
may receive a branch from obturator nerve
Sartorius PA
anterior superior iliac spine
Sartorius Action
at the hip…
- abduction
- flexion
- lateral rotation
at the knee.
- flexion
-medial rotation when flexed
Sartorius Nerve Innervation
femoral nerve L2, L3
Sartorius DA
pes anserine of tibia
Gluteus Maximus Action
hip extension (especially from flexed position)
assists in hip lateral rotation
fixes hip joint and assists in rising from sitting position
Gluteus Maximus PA
posterior gluteal line of ilium
dorsal sacrum and coccyx
sacrotuberous ligament
Gluteus Maximus DA
Most fibers end in iliotibial tract,
which attaches to Gerdy’s tubercle
of tibia
Some fibers insert on gluteal tuberosity
Gluteus Maximus Nerve Innervation
inferior gluteal nerve L5, S1, S2
Gluteus Medius Action
Hip abduction
Hip medial rotation
Hip external rotation by posterior fibers of glut med
Keeps contralateral pelvis level during single limb stance
Gluteus Medius PA
ilium, between anterior and posterior gluteal lines
Gluteus Medius DA
greater trochanter
Gluteus Medius Nerve Innervation
superior gluteal nerve L4, L5, S1
Gluteus Minimus Action
Hip abduction
Hip medial rotation
Keeps contralateral pelvis level during single limb stance
Gluteus Minimus PA
ilium, between anterior and inferior gluteal lines
Gluteus Minimus DA
greater trochanter
Gluteus Minimus Nerve Innervation
superior gluteal nerve L4, L5, S1
Tensor Fasciae Latae Action
Hip abduction
Hip medial rotation
Keeps contralateral pelvis level during single limb stance
Tensor Fasciae Latae PA
anterior superior iliac spine
anterior iliac crest
Tensor Fasciae Latae DA
liotibial tract, which attaches to
Gerdy’s tubercle of tibia
Tensor Fasciae Latae Nerve Innervation
superior gluteal nerve L4, L5, S1
Piriformis Action
laterally rotate extended hip
abduct flexed hip
stabilize hip joint
Piriformis PA
anterior sacrum
sacrotuberous ligament
Piriformis DA
greater trochanter
Obturator Internus Action
laterally rotate extended hip
abduct flexed hip
stabilize hip joint
Piriformis Nerve Innervation
anterior rami of S1 and S2
Obturator Internus PA
pelvic surface of obturator membrane and surrounding bones
Obturator Internus DA
greater trochanter
Obturator Internus Nerve Innervation
nerve to obturator internus L5, S1
Superior and Inferior Gemelli Action
laterally rotate extended hip
abduct flexed hip
stabilize hip joint
Superior and Inferior Gemelli DA
greater trochanter
Superior and Inferior Gemelli Nerve Innervation
superior: nerve to obturator internus L5, S1
inferior: nerve to quadratus femoris L5, S1
Superior and Inferior Gemelli PA
superior: ischial spine
inferior: ischial tuberosity
Quadratus Femoris PA
ischial tuberosity
Quadratus Femoris Action
hip lateral rotation
hip stabilization
Quadratus Femoris DA
quadrate tubercle
Quadratus Femoris Nerve Innervation
nerve to quadratus femoris L5, S1
Adductor Longus Action
hip adduction
Adductor Longus PA
body of pubis
Adductor Longus DA
linea aspera of femur
Adductor Longus Nerve Innervation
obturator nerve L2, L3, L4
Adductor Brevis Action
hip adduction
hip flexion (to some extent)
Adductor Brevis PA
body and inferior ramus of pubis
Adductor Brevis DA
pectineal line
linea aspera of femur
Adductor Brevis Nerve Innervation
obturator nerve L2, L3, L4
Adductor Magnus Action
hip adduction
adductor part: hip flexion
hamstring part: hip extension
Adductor Magnus PA
adductor part: inferior pubic ramus, ramus of ischium
hamstring part: ischial tuberosity
Adductor Magnus DA
adductor part: gluteal tuberosity, linea aspera, medial supracondylar line
hamstring part: adductor tubercle of femur
Adductor Magnus Nerve Innervation
adductor part: obturator nerve L2, L3, L4
hamstring part: tibial part of sciatic nerve L4
Gracilis Action
hip adduction
knee flexion
knee medial rotation when flexed
Gracilis DA
pes anserine of tibia
Gracilis PA
body and inferior ramus of pubis
Gracilis Nerve Innervation
obturator nerve L2, L3
Obturator Externus Action
hip lateral rotation
hip stabilization
Obturator Externus PA
margins of obturator foramen
obturator membrane
Obturator Externus DA
greater trochanter
Obturator Externus Nerve Innervation
obturator nerve L3, L4
Psoas Major Action
with origin fixed…
- hip flexion
- hip lateral rotation
with insertion fixed…
- trunk flexion toward thigh
- pelvic anterior tilt
stabilizes hip joint when standing
Psoas Major PA
sides of T12-L5 vertebrae and discs between them
TP L1-L5
Psoas Major DA
lesser trochanter
Psoas Major Nerve Innervation
anterior rami of L1, L2, L3
Iliacus Action
with origin fixed…
- hip flexion
- hip lateral rotation
with insertion fixed…
- trunk flexion toward thigh
- pelvic anterior tilt
Iliacus PA
iliac fossa
sacrum
anterior sacroiliac ligaments
Iliacus DA
lesser trochanter
psoas tendon
Iliacus Nerve Innervation
femoral nerve L2, L3, L4