Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
50 Cards in this Set
- Front
- Back
articulations between R and L os coxae and the sacrum
|
SI joints
|
|
compresses the sacrum laterally
|
each ilium
|
|
orientation of sacrum
|
oblique with convex-concave relationship between ilium and sacrum
|
|
The sacrum is wider _______ at the top, and _______ at the bottom.
|
posteriorly
anteriorly *this shape restricts nutation |
|
What creates STABILITY by limiting SI motion?
|
SI ligaments
|
|
proper name for interosseous ligament (strongest one)
|
syndesmosis
|
|
What covers ilial surfaces in the SI joints?
|
fibrocartilage
|
|
Each SI has a joint capsule with a synovial-type fluid contained and is therefore considered to be a _________ joint.
|
synovial
|
|
Opposes vertical translation and SI joint distraction - disrupted when pubic symphysis is off by even 25mm.
|
Anterior SI ligament
*Vertical restriction |
|
Restricts lateral flexion of lumbar base relative to ilium, and restricts translation out of pelvic girdle as result of normal lordosis.
|
Iliolumbar Ligament
*Lateral and lordosis limiter |
|
This SI ligament is a thin extension of the synovial capsule and restricts vertical translation of sacrum.
|
Anterior SI ligament
|
|
This ligament comes from L4/5 TP's and blends with the anterior SI ligament; it restricts lateral and lordotic translation.
|
Iliolumbar ligament
|
|
Attaches the PSIS to the sacrum! Ergo, it is so stiff it frequently is mistaken for bony prominence during palpation.
|
Posterior SI ligament
|
|
Continuous with sacrotuberous ligament, then hamstring fascia, all the way from the PSIS!
|
Posterior SI ligament
|
|
Limits joint separation, vertically and anteroposterior translations and limits EXCESSIVE COUNTERNUTATION
|
Posterior SI Ligament
|
|
Anterior ligament stops ________ translation. Iliolumbar stops ______ + _______ translation. Posterior SI stops joint separation, vertical/anteroposterior and excessive __________.
|
Anterior = vertical + joint dis.
Iliolumbar = lateral + lordotic Posterior = counternutation |
|
Has a Lateral, Medial and Superior band...very large LEVER ARM that restricts nutation (like iliolumbar).
|
Sacrotuberous ligament
|
|
The anterior SI ligament is an extension of the anterior joint capsule; what is the sacrotuberous ligament?
|
an extension of the posteroinferor joint capsule of the SI
|
|
Which band of the Sacrotuberous ligament lever arm stretches from PSIS to coccyx?
|
Superior
*interdigitates with iliolumbar and restricts nutation |
|
Thickest and strongest ligament of SI
|
Interosseous
|
|
Limits vertical and anteroposterior translation, and is the strongest SI ligament
|
Interosseous
*same actions as posterior SI ligament |
|
Extension of anteroinferior joint capsule that attaches sacrum to coccyx and ischial spine. LARGE LEVER ARM restricting nutation.
|
Sacrospinous ligament
*same actions as Sacrotuberous ligament |
|
Sacrospinous is in the front, Sacrotuberous is in the back. They both?
|
Long Lever arms that restrict NUTATION
|
|
Gluteus Maximus attaches to which SI ligament?
|
Sacrotuberous (the one in the back that is the long lever restricting nutation)
|
|
How does gluteus maxiumus influence sacral motion?
|
it is attached to sacrotuberous ligament, which restricts nutation. It may influence the stability of the joint.
|
|
The piriformis is attached to the same ligament as gluteus maximus - ?
|
sacrotuberous ligament
|
|
Which muscles traction the ilia from the sacrum, although not directly attached to the SI?
|
Gluteus medius and minimus
|
|
We know the origin of biceps femoris is the ischial tuberosity. What then is the ligament to which it is attached?
|
Sacrotuberous so it stabilizes nutation of the sacrum
|
|
sacrospinous in the front, sacrotuberous in the back
|
they both have long lever arms that restrict nutation
|
|
Which muscle flexes the hip and is attached to Ventral sacroiliac, iliolumbar and lumbosacral ligaments?
|
Iliopsoas
|
|
Iliacus stabilizes pelvis to hip but PSOAS itself resists the high __________ forces between the lumbar vertebrae
|
compression
|
|
What is not under dispute is the SIJ and its ligaments are extensively ________.
|
innervated
(L2-S4) |
|
functions of SIJ
|
1. transmission/dissapation of truncal loads to lower ex and vice versa (buffer)
2. limits X-axis rotation 3. Helps parturition (pregn) |
|
What may preferentially strain and injure the weaker anterior joint capsule of the SIJ?
|
Torsion and Axial compression
(SI joints can take medially directed force 6x greater) |
|
Which aspect of thoracolumbar fasica cover the QL
|
deepest
|
|
Which aspect of thoracolumbar fascia attaches to TP's and intertransverse ligaments from rib 12- iliac crest?
|
middle
|
|
Layer of thoracolumbar fascia that attaches to most of the SI ligaments, core stability and breathing muscles and lats?
|
Superficial layer
|
|
Most important layer of thoracolumbar fascia, due to ligamentous attachment, ergo SI stability?
|
Superficial
|
|
muscles that contract superficial thoracolumbar fascia
|
lats
glute max erectors |
|
muscle attached to deep layer of thoracolumbar fascia
|
biceps femoris
|
|
What muscle pulls on both the ipsi and contra SI's when it contracts, preventing counternutation at both joints
|
Latissimus dorsi via pulling on the thoracolumbar fascia
|
|
Has there ever been a non-invasive test for diagnosing SIJ (dysfunction)?
|
No
|
|
Is the SIJ a significant source of pain in patients with chronic low back pain?
|
yes
studies done via needle anesthetics |
|
SIJ pain is similar to what pain?
|
lumbar disc herniation
|
|
Single distinguishing characteristic of SIJ dysfunction from lumbar zygapophyseal/disc pain?
|
groin pain present with SJI
*below the knee radiation was equal |
|
The SIJ presentation of
Low Back Groin Thigh pain is most common in? |
young & middle aged women
|
|
Most common method to diagnose SIJ dysfunction?
|
static palpation
|
|
What is the most valid, not the most common, method of diagnosing SIJ dysfun.
|
SIJ blocks
|
|
conclusion of chiro diagnostics for SIJ
|
not reproducible nor is detection of lumbo-pelvic lesion because no valid tests established
|
|
Presence of the manipulative lesion of SIJ remains ____________
|
hypothetical
|