Hip Flashcards
angle of inclination
femoral head and neck
occurs on frontal plane
Coxa Valga
>125 on angle of inclination
Coxa Vara
Angle of inclination < 125
angle of inclination serves to
optimaize joint surface alignment
Coxa Vara with high BMI
can result in slipped capital femoral epiphysis
Coxa vara pros and cons
pros increased mvmt arm from AB improve joint stability
cons increased bending moment arm icreases shear force and decreased fuctional length of hip AB
Coxa Valga pros and cons
pros - decreased bending mvmt arm decrases shear force and increased functional length of AB
cons decreased mvmt arm for AB and alignment may favor dislocation
angle of torsion
occurs in tansverse plane
15 degrees of anteversion
axis between head and femoral condyles
excessive anteversion on femur
incrases angle of torsion
reduces hip stability increased hip IR
commonl found with COXA VALGA
toe in gait
increases mvmt arm of AB
retroversion
decreasedd angle of torsion
increased hip ER
may casue impingement
shoulder vs hip angulation
shoulder retroversion
hip is anterversion
Coxa profunda
acetabular overcoverage more than 45 degrees
dysplasia
acetabular undercoverage less than 16 degrees
femor head coverage is determined by
acetabular depth
center edge angle
FAI cam
loss of natural tapering
inpingement may occur