MA II: Hip Flashcards
MA II: hip
what is the hip angle of inclination?
- Angle between femoral shaft and femoral neck
- Normal adults: 125 deg
- Coxa vara: 105 deg
- Coxa valga: 140 deg
normal angle of anteversion
- 10-15 deg
3 ligaments of the hip
- iliofemoral, ischiofemoral, pubofemoral
- All 3 ligaments are taut in extension
the close packed position of hip
Extension + IR + Abduction
MA II: hip
primary hip external rotators
- gluteus max
- sartorius
- piriformis
- obturator internus
- sup/inf gemellus
- quadratus femoris
Position of maximal congruency of the hip
90° hip flexion + moderate ER + Abduction
primary hip abductors
glut medius, minimus , TFL
action of the gluteus medius
- primary hip abductor
- anterior fibers: IR/FLX
- posterior fibers: ER/EXT
what muscles do posterior pelvic tilt?
hip extensors and abdominal muscles
primary hip extensors
gluteus maximus, hamstrings, posterior head of adductor magnus
From about 75° of hip flexion, ________ and hamstrings produce equal extension torque
adductor magnus
which muscle is a hip extensor when the hip is in 100 deg of flexion, and a flexor when the hip is in extension?
adductor longus
primary hip adductors
adductor brevis, longus, magnus, pectineus, gracilis
primary hip flexors
iliopsoas, rectus femoris, sartorius, TFL, pectineus and adductor longus.
