Hip AK and OK Flashcards
Osteokinematics of femur on pelvis
flexion/extension
abduction/adduction
ER/IR
Flexion AK OKC
convex on concave
superior roll, inferior slide
Extension AK OKC
convex on concave
inferior roll, superior slide
Abd AK OKC
convex on concave
superior roll, inferior slide
Add AK OKC
convex on concave
inferior roll, superior slide
IR AK OKC
convex on concave
medial roll, lateral slide
ER AK OKC
convex on concave
lateral roll, medial slide
Osteokinematics of pelvis on femur
anterior/posterior pelvic tilt
lateral tilt
forward/backward rotation
APT and PPT occur in what plane
sagittal
anterior tilt produces hip _____.
flexion
posterior tilt produces hip ___.
extension
Anterior tilt AK CKC
concave on convex
anterior roll and slide
Posterior tilt AK CKC
concave on convex
posterior roll and slide
lateral pelvic tilt occurs in what plane and is associated with what 2 movements?
frontal plane
ABD/ADD
In unilateral stance what will be seen at the hip?
pelvic hike
pelvic drop
In bilateral stance, the movement of the pelvis is described as
pelvic shift
Right pelvic hiking results in ________ at the hip on the L
abd
Right pelvic dropping results in ______ at the hip on the L
add
Lateral Pelvic Tilt AK CKC
concave on convex
ABD: superior roll and slide
ADD: inferior roll and slide
With R hip hiking, describe OK and AK on L hip
AK: superior roll and slide
OK: L hip abd
concave on convex
With a R pelvic shift, the R leg is ____ while the L leg is ___.
add
abd
forward and backward rotation occur in what plane and are associated with what 2 motions?
transverse
IR/ER
Forward rotation results in ______ of the stance hip joint and the side of the pelvis opp to stance leg moves _____.
IR
anterior
Backward rotation results in ______ of the stance hip joint and the side of the pelvis opp to stance leg moves _____.
ER
posterior
Forward rotation AK CKC
concave on convex
anterior roll and slide
Backward rotation AK CKC
concave on convex
posterior roll and slide
Close Packed
full extension with slight IR and ABD
open packed
moderate flexion, slight ABD, neutral rotation
Capsular pattern
IR = Flexion = ABD
What two groups of muscles work together as a force-couple to produce an APT?
hip flexors and low back extensors
What two groups of muscles work together as a force-couple to produce an PPT?
hip extensors and abdominal muscles
What two muscles coactivate to produce a moderate to high powered hip flexion?
hip flexors and abdominal muscles
____ must prod strong enough PPT to neutralize the APT exerted by _____.
rectus abdominis
hip flexors
What muscle is capable of producing bidirectional torque in the sagittal plane?
adductor longus
When the hip is flexed what muscle contributes to hip extension?
adductor longus
Adductor longus is suseptible to soreness/straining with what two types of activity? What type of motion is it beneficial for?
running and jumping
high-power cyclic motions