hip part 1 Flashcards
what are the osteokinematic motions in the sagittal plane?
flexion 0-120º
extension 0-20º
in OKC what is moving?
femur moving on relatively fixed pelvis
what are the osteokinematic motions in the frontal plane?
abduction 0-45º
adduction 0-30º
what is the only adductor muscle that crosses 2 joints?
gracilis (primary adductor also knee flexor- limited with knee extension)
what are the osteokinematic motions in the transverse plane?
IR from anatomic neutral 0-55º
IR from flexion 0-45º
ER from anatomic neutral 0-55º
ER from flexion 0-45º
why is there a 10º difference in the transverse plane between anatomic neutral and flexion (short sit) position?
because the posterior capsule becomes taut with and greater tension
what are the normal osteokinematic ranges of the femur at the hip for gait?
flexion 30º
extension 10º
abd/add 5º each
IR/ER 5º each
what are the arthrokinematic motions of the femur at the hip joint for OKC abduction?
superior roll and inferior glide
what are the arthrokinematic motions of the femur at the hip joint for OKC adduction?
inferior roll and superior glide
what are the arthrokinematic motions of the femur at the hip joint for OKC flexion?
anterior roll and posterior glide
spin
what are the arthrokinematic motions of the femur at the hip joint for OKC extension?
posterior roll and anterior glide
spin
what are the arthrokinematic motions of the femur at the hip joint for OKC IR?
medial/anterior roll and lateral/posterior glide
what are the arthrokinematic motions of the femur at the hip joint for OKC ER?
lateral/posterior roll and medial/anterior glide
for flexion and extension why is it a spin more so than a roll and glide?
because there isn’t really a pathway due to the acetabulum being deeper and labrum has a negative pressure
what are the osteokinematic motions in the sagittal plane for the motions of the pelvis at the hip joint (CKC)?
posterior tilting and anterior tilting
what is occurring for posterior tilting of the pelvis?
the pelvis moves posteriorly away from the femur= hip extension
the lumbar spine is in flexion
concentrically contract the rectus abdominus which pulls and rotates posteriorly
what is occurring for anterior tilting of the pelvis?
the pelvis moves anteriorly closer to the femur= hip flexion
the lumbar spine is in extension
concentrically contract the erector spinae
how do we determine hip abduction?
> 90º (increasing the angle) away from midline
how do we determine hip adduction?
<90º (decreasing the angle) closer to midline
if the angle at the hip increases= hip abduction what is the frontal plane motion occurring?
hemi-pelvic elevation
if the angle at the hip decrease= hip adduction what is the frontal plane motion occurring?
hemi-pelvic depression
if the femur is turned toward the pelvis what motion occurred?
hip internal rotation
toes turned in
if the femur is turned away from the pelvis what motion occurred?
hip external rotation
toes turned out
in the transverse plane if the pelvis is turned toward the femur what motion occurred?
internal rotation
in the transverse plane if the pelvis is turned away from the femur what motion occurred?
external rotation
what is the lumbopelvic rhythm?
in OKC either top down motion or bottom up motion at hip all segments move in the same direction as intended motion
what is occurring in closed kinematic chain motions at the hip?
the head and feet stay fixed
the pelvis and lumbar spine go in opposite directions
what is Janda’s Pelvic-Pelvic Crossed syndrome?
2 tissues that are adaptively lengthen and shortened on one side and 2 on the other side overtime
if a patient is stuck in anterior tilt what would be adaptively lengthen and shortened?
shortened: hip flexors (iliopsoas and rectus femoris) and erector spinae
lengthened: rectus abdominis and hamstrings
if a patient is stuck in posterior tilt what would be adaptively lengthen and shortened?
shortened: rectus abdominis and hamstrings
lengthened: hip flexors (iliopsoas and rectus femoris) and erector spinae
