LECTURE 4A Flashcards
isolated SI joint probs are common TRUE OR FALSE
false: RARE
SI joint is the ____ understood joint in the body
least
SI joint does not MOVE
(or if it does move, moves minimally)
SI joint most commonly refers where
LBP
or hip
*mechanical/non-specific LBP
___% of people with non-specific LBP have SI joint pain
15-30%
women have a __, ___ pelvis than men
wider, flatter pubic arch (U SHAPE)
wider bigger pelvic inlet
sacrum concavity is on the ____ side
anterior
what muscle originates at anterior aspect of S2, 3, 4:
pirformis
what 2 mm directly produce SI joint motion?
- pirformis
- pubococcygeal
what motions do the pirformis do?
- hip external rotation, hip abduction
- when hip flexes over 90, pirformis becomes hip IR
LBP and hip dysfunction is ___ than SIJ dysfunction
way more common
1. LBP + SIJ
2. hip + SIJ
___% of people with LBP have ____ related pain
15-30% have SI joint related pain!
what muscle really likes infection
iliopsoas
(absess, hematoma)
1. TB
2. osteomyelitis
most common complaint of SI joint dysfunction
TTP over region of PSIS
what are other complaints of SI joint pain?
pain with transitional movements (sitting to standing, standing to sitting/lying)
2. SLS activity pain (stairs, gait)
3. end range SLR active pain (after 90)
4. prolonged sit/standing
SACRAL NUTATION
base: anterior
apex: posterior
innominates are posterior (posterior pelvic tilt, decreased lumbar lordosis)