Chapter 2 Flashcards
When does the distance between the PSIS(s) change in relation to the IN/EX ilium?
An IN will be closer to the center of sacrum, which makes the EX farther from the center of sacrum
When the ilia misalign, what other structure is effected (mainly)?
Pubic symphysis
When misaligned the pubic symphysis rotates to which side?
The IN side
Do subscript measurements give absolute or relative values?
Relative values
What is the alternate method of determining IN and EX?
Measure width of the ilia from the most medial part to the most lateral part of the ilia; wider one is IN
How do EX/IN alter obturator appearance?
EX- increases the width of the base
IN- decreases width of the base
How does EX/IN alter lumbar curve? Femur head level?
EX- hyperlordosis (increases curve), lowers femur head
IN- hypolordosis (decreases curve), raises femur head
Describe edema for EX and IN
EX- posterior aspect of joint (can be palpated)
IN- anterior aspect of joint (can’t be palpated but often associated with pain)
Describe foot flare of EX/IN
EX- toe in
IN- toe out
With an IN ilium describe pelvic rotation, feet rotation, head/torso rotation
Pelvis and feet will be rotated to IN side, head and torso rotate to the EX side to compensate
What might offset femur head height other than misalignment of the ilia?
An anatomically short leg, knee or ankle injury, previous fractures, etc
Describe edema for ASIN, PIEX, ASEX, PIIN
ASIN- anterior superior margin
PIEX- posterior superior margin
ASEX- posterior inferior margin
PIIN- anterior inferior margin
What are the perimeters for IN-EX or EX-IN listing?
NO anterior-posterior misalignment and NO lumbar rotation
Which one is listed first, IN or EX?
Left one first with a hyphen then the right
