Hip Flashcards
Normal angle of inclination
125
coxa vara
105
coxa valga
140
normal angle of torsion
15 degrees
anteversion
more anterior view of the femoral head, greater than 15 degrees
retroversion
more of the femoral head is tucked away, less than 15 degrees
center edge angle
25-35 degrees
acetabular anteversion angle
20 degrees
Iliofemoral (Y) ligament
important stability structure on anterior aspect of hip joint, limits extension, external rotation, and in full hip extension, can limit internal rotation
Pubofemoral ligament
limits abduction and extreme extension, and possibly external rotation.
Ischiofemoral ligament
Primarily limits full internal rotation and extension.
Max articular congruence of hip
Flexion, abduction, ER
close packed position of hip
Extension, slight abduction, slight IR
Femoral-on-Pelvic Rotation sagittal plane
120 passive flexion
70-80 w/ straight knee
~ 20 extension
Femoral-on-Pelvic Rotation frontal plane
40 -45 ABD
25 ADD
Femoral-on-Pelvic Rotation transverse plane
35 IR
45 ER
Pelvic-on-Femoral Rotation sagittal plane
Ant tilt (hip flexion) ~ 30 deg in sitting
Post tilt (hip extension) ~ 10 to 20 deg
Pelvic-on-Femoral Rotation frontal plane
30 ~ ABD
Pelvic-on-Femoral Rotation transverse plane
IR moves opposite iliac crest anteriorly
primary hip flexors
Psoas major
Iliacus
TFL
Sartorius
RF
Add Longus
Pectineus
primary hip adductors
Pectineus, adductors (longus, brevis, magnus)
primary hip internal rotators
none
primary hip extensors
Glute max
BF (long head)
Semimembranosus
Semitendinosus
Add magnus (posterior head)
primary hip abductors
Glute med/min
TFL
primary hip external rotators
Glute maximus
Piriformis
Obturator internus
Gemellus sup/inf.
Quadratus femoris
Sartorius
