Hip BM Flashcards
Function of the Hip
Weight bearing
Stability
Mobility for gait (s and l limb)
Force transmission (pelvis to femur)
Osteology of the acetabulum
Lateral
Anterior
Inferior
Osteology of femoral head
Oriented: medial, superior, anterior
2/3 of sphere
Neck
Greater trochanter
Normal femur angle of inclination
Normal = 125°
Coxa Vera femur angle of inclination
Less than 125°
Adduct hip to align
Coxa Valga femur angle of inclination
Greater than 125°
Abduct hip to align
Anteversion angle
Degree of anterior orientation of femoral head
~15° I’m adults
Greater in children
Increased anteversion will result in what
Decreased external ROM
Decreased anteversion will result in what
Decreased anteversion will result in decreased internal ROM
Ligament in the hip
Illiofemoral, pubofemoral, ischiofemoral, ligamentum teres
Illiofemoral restricts and tightens with what
Restricts extension and ant. Translation
Superior tightens with adduction
Inferior tightens with abduction
Pubofemoral restricts what
Abduction and extension
Ischiofemoral restricts what
Internal rotation and extension
Ligamentum teres limits what
IR/ER
Ligament function
Tension in all ligaments minimizes the need for muscle activity
Ambulation: prevents hyperextension
Arthrokinematics for femur Flex/Ext
Spin
Arthrokinematics for femur Abduction
Sup roll & inf glide
Arthrokinematics for femur Adduction
Inferior roll & sup glide
Arthrokinematics for femur IR
Ant glide & post roll
Arthrokinematics for femur ER
Post roll & ant glide
Pelvic motions: bilateral
Anterior/posterior tilt
ASIS moving
Pelvic motions: unilateral
- Hip hike and hip drop
- Forward and backward rotation
*both names for the non-weight bearing side motion
Arthrokinematics for PELVIC ant/post tilt
Spin
Arthrokinematics for PELVIC hike (weight bearing side)
Superior roll & sup glide
Arthrokinematics for PELVIC drop (weight bearing side)
Inferior roll & inferior glide
Arthrokinematics for PELVIC forward rotation (wt bearing side)
Ant roll & ant glide
Arthrokinematics for PELVIC backward rotation (wt bearing side)
Post roll & post glide
Hip flexors
Femur flexion on pelvis
Anterior pelvic tilt
Hip extensors
Glut max
Hamstrings, adductor magnus
Posterior pelvic tilt
Hip abductors
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Hip adductors
Adductor magnus
Internal rotators
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External rotators
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JFR during normal walking
2.4 x BW
JFR during stairs
2.5 x BW
JFR during running
5.5 x BW
JFR during stumbling
8.7 x BW
Which hand should hold the cane and why?
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Which hand should be used to carry a load and why?
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Carrying effect
JRF decreases with ipsilateral carrying
JRF increases with contralateral carrying