pelvis & sacrum Flashcards
there is no __ axis movement in the pelvis
z
there is no __ axis movement in the pelvis
z
SI joints are mobile ___ joints that support the trunk, guide movement and help absorb compressive forces
diarthrodial (synovial)
interlocking elevations and depressions on the SI jt produces the ___ effect of the sacrum, distributing axial compressive forces
keystone
bc of SI jt, forces from LE divide, heading upward twd the ___, ant twd the ____, and downward forces of gravity on the ___ split to both sides
spine
pubic symph
spine
SI jt develops over time, and in later years, many males will have interarticular ___ across them & therefore lost motion
adhesions
during locomotion, the SI joints flex/extend in ___ with the corresponding hip joint, which are ___ at the other joint by opposite movement
unison
mirrored
- as one innonimate flexes (PI) the ipsilateral sacral base moves AI, this is called ___
- when the other innonimate extends (AS) the ipsilateral sacral base moves PS: __
nutation
counter nutation
the proposed axes of motion in the SI articulation allow a gyroscopic figure 8 movement in:
Illi’s model of SI motion
the SI joint is not crossed by ANY muscle, as it provides _____ not mobility
stability
- ExL and InR accompany __ theta Y
- ExR and InL are __ theta Y
neg
pos
- ExL and InR accompany __ theta Y
- ExR and InL are __ theta Y
neg
pos
in SACRAL sublux:
- apex L/R listing correlates with theta __
- base/apex post correlates with theta __
- L/R posteriority correlates with theta __
Z
X
Y
