Lecture 4A Flashcards
How common are isolated problems in the lumbo-pelvic-hip complex
RARE
The lumbo-pelvic-hip complex is the _____________ for static and dynamic tasks
primary stabilizer
SI joint contributes to dx of nonspecific LBP in __________ of people
15-30%
Men have ___________ pelvic anatomy compared to women
smaller
The base of the sacrum articulates with ___________
the apex of the sacrum articulates with the ____________
w/ base of the 5th lumbar vertebrae
w/ Coccyx
(note: Apex is at the bottom)
The anterior SI joint ligaments limit what motions?
all motions
What is the most important ligament of the SI joint?
Interosseus ligament
What movements do the interosseus ligament of the sacrum limit
anterior and inferior movements of the sacrum
The long ligaments (posterior) of the SI joint limit what?
limit anterior iliac rotation (sacral counternutation)
The sacrotuberous ligament limits what motion
Limits posterior iliac rotation (Sacral nutation)
What motion does the sacrospinious ligament limit
limit posterior iliac rotation (sacral nutation)
What are the functions of the pelvic floor muscles?
increase intrabdominal pressure
Provide rectal support
inhibit bladder activity
help support pelvic organs
Assist in lumbopelvic stability
35 muscles attach to the SI joint, how many can move the SI joint?
2 muscles
piriformis and pubococcygeal
What is the primary funtion of the piriformis
Hip ER and ABD
when hip is flexed over 90+ it becomes hip IR
Pain with single leg stance is a strong indicator of __________
SI joint dysfunction
What muscles are included in the “inner muscle system”
which stabilizes the SI joint and prevent hernia
Multifidi, TA, Pelvic Floor, Diaphragm
The anterior portion of the SI joint get what nerves?
The posterior portion gets what nerves?
Posterior Rami of L2-S2
Posterior Rami of L3-S3
Nutation/counter nutation is named based on what
The position of the sacrum relative to the innominates
Sacral nutation causes the Base to move _______
the apex moves ____________
anterior and inferior
posterior and superior
Sacral counternutation causes the base to move ________
and the apex to move ______________
superior and posterior
inferior and anterior
What sacral movement makes the pelvic outlet smaller?
pelvic counternutation
