Hip Flashcards
what bones form the innominate?
- ischium
- ilium
- pubis
what is the directionality of the acetabulum?
- anterior
- inferior
- lateral
What is normal hip inclination?
125-130*
Features of Coxa Valga? (3)
- increased angle of inclination
- less bending force
compression is more straight
Features of Coxa Vara
- decreased angle of inclination
- increased bending force
- increased moment arm for abduction
Describe normal torsion of the femur.
The femoral head and neck are rotated ~10–15* ant and lateral to an angle through the femoral condyles.
Describe Anteversion
whenever the angle of torsion is increased beyond normal.
Describe retroversion.
When the angle of torsion of the head of the femur is less than (15*).
may still be rotated relative to zero.
what compensation may accompany excessive anteversion ?
excessive “in toeing” or IR at the hip.
The hip ligaments as a whole tend to limit what movement(s)?
extension and internal rotation
Name the 3 ligaments of the hip.
- illiofemoral
- pubofemoral
- ischiofemoral
Illiofemoral- limits what?
full ext. ER
pubofemoral - limits what?
Extension. Abduction
Ischiofemoral- limits what?
Full extension, IR, Add, Flexion
The hip joint is most stable in which position? Closed pack position
Extension, Internal Rotation, slight abduction
Optimal articular contact (congruence) occurs in what position?
Abduction, External Rotation, Flexion
The hip presents what osteo/arthrokinematics in open chain?
opposite.
convex on concave
Right hip hiking has what on the left hip.
Left hip adduction in closed chain
Posterior rotation at the left hip will cause what motion at the right hip?
external rotation in closed chain
What is the body’s functional response to tight hip flexors?
anterior pelvic tilt
Primary muscles of hip IR
Trick question. none
Contributors to Hip IR.
Anterior fibers of glut max and med
Add longs and brevis
pectineus
muscles of hip ER
glut max piriformis obturator internus gemeullus Quad femoris sartorius
Adductor longs can work as a hip extensor and flexor. Why?
Change in line of action when flexed or extended,
