Hip + knee Flashcards
What muscles flex the hip (4)
- iliacus
- psoas
- sartorius
- rectus femoris
iliacus
o = iliac fossa
i = lesser trochanter
a = hip flexion
n = femoral
psoas
o = lumbar vertebrae
i = lesser trochanter
a = flex hip
n = femoral
what muscles extend the hip (5)
- gluteus maximus
- adductor magnus
- biceps femoris
- semitendinosus
- semimembranosus
gluteus maximus
o = posterior sacrum, posterior + medial iliac crest
i = iliotibial tract, gluteal tuberosity
a = extend hip, externally rotate
n = inferior gluteal nerve
What muscles adduct the hip + what are their o/i
- adductor longus
- adductor brevis
- adductor magnus
- gracilis
- pectineus
o = ilium, pubis, ischium
i = medially on femur/tibia
n = obturator
what muscles abduct the hip (4)
- gluteus medius
- gluteus minimus
- tensor fascia latae
- sartorius
gluteus medius/minimus
o = iliac crest
i = greater trochanter
a = abduction/internal rotation
n = superior gluteal nerve
tensor fascia latae
o = iliac crest
i = iliotibial tract (which inserts on lateral condyle)
a = flex/abduct hip
n = superior gluteal
list the 6 lateral rotators + their o/i/n
- piriformus
- superior gemelli
- inferior gemelli
- externus obturator
- internus obturator
- quadratus femoris
o = dif aspects of pelvis
i = posterior aspect of femur
n = sacral/lumbar plexus
sartorius
what are the 2 medial rotators
gluteus medius/minimus
what muscles extend the knee
- rectus femoris
- vastus lateralis
- vastus intermedius
- vastus medialis
rectus femoris
o = anterior inferior iliac crest
i = tibial tuberosity
a = flex hip/extend knee
n = femoral
vasti (intermedius, lateralis, medialis)
o = femur
i = tibial tuberosity
n = femoral
what muscles flex the knee (3)
- biceps femoris
- semitendinosus
- semimembranosus
biceps femoris
o = ischial tuberosity
i = head of fibula
n = sciatic
semitendinosus/semimembranosus
o = ischial tuberosity
i = medial condyle of tibia
n = sciatic
sartorius
o = anterior superior iliac spine
i = medial tibia (near tibial tuberosity)
a = knee + hip flexion, abduction, external rotation
n = femoral nerve
what muscle group is innervated by the femoral nerve
anterior compartment
what muscle group is innervated by the sciatic nerve
posterior compartment
what muscle group is innervated by the obturator nerve
adductors/medial compartment
what muscles insert on the tibia
- rectus femoris + vasti = tibial tuberosity
- semitendinosus/semimembranosus = medial condyle of tibia
what muscles originate from the ischial tuberosity
- biceps femoris, semimem/ten
