msucles of the HIP Flashcards
what muscle can be a laterally rotators in extension or a medial rotators in flexion
pirifomris
adductors can be ___ or ___
flexors or extensors
what is the function of hip flexors
brings swing limbs forward during gait
what do hip flexors resist
hip extension forces
what are the 4 primary hip flexors
iliopsoas
rectus femoris
TFL
sartorius
what muscle does anterior pelvic tilt , lumbar extension and hip flexion in sitting
iliopsoas
what is the function of the rectus femoris
hip flexion and knee extension
the rectus femoris is the biggest contribution to hip flexion when the knee is ___
flexed
what motion does the sartorius do at the hip? knee?
hip: flexion , abduction and ER
knee: flexion and medial rotation
what is the function of the hip adductors
stabilizes hip in standing
what muscle can help hip flexion from extension
hip adductors
what muscle can extend from a flexed position
hip adductors
what are the 5 hip adductors
pectineus
adductor brevis
adductor longus
adductor magnus
gracilis
which hip adductors is a 2joint structure
gracilis
what can the gracilis help do
flex hip if knee is extended
what are the 2 main hip extensors
glute max
hamstrings
what is the function og glute max for hip
laterla rot and extension
what muscle has the longest MA/ peak efficiency for extension when the hip is flexed ~70
glute max
what muscle is a 2 joint muscles and does knee flexion and rotation and hip extension
hamstrings (semitend. , semimem., biceps fem)
for the hamstrings, if the the knee is flexed greater than 90° , what does it lose ability to do
extend hip
hip extensors are assisted by what 3 muscles
posteior glut med
post adductor magnus
piriformis
what are the 2 hip abductors
glute min and med
what is the function of glute med
abduction in all hip positions
when the hip is flexed what do all portions of the glut med do
IR
anterior fibers of the glute med does what
flexion and IR
posteior fibers of the glute med does what
ext and ER
what is the function of the glute min
abduction and flexion of the hip
what muscle plays a role in capsular tightening of the hip
glute min
what are 3 mm that the hip abductors are assisted by
superior glute max
sartorius
TFL
what are the 4 hip lateral rotators
obturator internus and externus
gemellus superior and inferior
quadratus fem
piriformis
does the obturator internus or externus have decreased MA with hip flexion
OI
what does the piriformis do when the hip is flexed > 90°
IR
what are the 2 mm that assist the hip lateral rotators
posterior glute med
glute max
what are the 2 muscles that are effective lateral rotators regardless of hip flexion
obturator externus and quadratus femoris
what are the hip IR mm
no primary ones
contributors from anterior glute med , min , TFL , adductors
