OMM Spring 2020 Exam 1 Flashcards
The sacrum is viewed as part of the _______ and the paired inominates are viewed as part of the ________
In the human infant, the pelvis is narrow and unsupportive, but as we begin to walk, the pelvis broadens and tilts while the sacrum descends into its articulation with the ilia. Also, the lumbar curve of the lower back develops.
Sacrum: vertebral axis
Inominates: Lower extremities (x2)
The pelvic inlet/brim is composed of
a. sacral promontory
b. iliopectineal line
c. superior border of pubic symphysis
d. left rami of pubic arch
A-C
NOTE: pelvic outlet is confined by the pubic symphysis, right and left rami of the pubic arch, ischial tuberosities, sacrotuberous ligaments and tip of the coccyx
Difference between male and female pelvis includes:
The male pelvis is sturdier with more height, while the female pelvis grows more ______ in diameter. It is larger with a more rounded inlet and outlet, and has a larger _______ angle.
Female: transverse growth, larger infrapubic angle
*greater distance between ischial tuberosities and coccyx
What is the most common pelvic type?
Gynecoid
The inominates of the pelvis are composed of three main parts:
- Ilium
- Ischium
- Pubis
The ilium accounts for the width of the _____, while the ischium is where the weight falls while seated.
Ilium: widgth of the hips
**all 3 unite in early adulthood at the acetabulum (triangular suture)
A fibrocartilaginous joint that joins the two inominate bones ANTERIORLY. The muscular forces can cause rotation at the symphysis along the transverse axis.
Pubic Symphysis
Bilateral L-shaped joints that join each innominate to the sacrum.
Sacroiliac joint
*injections for inflammation (arthrodial joint)
NOTE: sacral side = hyaline cartilage; ilial side = fibrocartilage
The Pelvis is surrounded by:
- anterior sacroiliac ligaments
- interosseous sacroiliac ligaments
- posterior sacroiliac ligaments
- accessory ligaments (sacrotuberous, sacrospinous, iliolumbar)
Which of the above are true ligaments?
- anterior sacroiliac ligaments
- interosseous sacroiliac ligaments
- posterior sacroiliac ligaments
NOTE:
ventral: iliolumbar, ant. sacroiliac
dorsal: sacrospinous, sacrotuberous, post. sacroiliac
Motions within the pelvic girdle are numerous and occur around various axes
- sacral
- inominate (ilia)
- pubic
True/False: Dysfunction of motion around any of these axes may be reflected by muscle spasm, back or pelvic pain, gait disturbance/leg pain, changes in or creation of compensatory patterns, and/or increased energy demands.
True
Fred Mitchell describes 3 transverse axes and 2 oblique axes. Transverse axes include:
- Superior transverse axis (STA)
- Middle transverse axis
- Inferior transverse axis
This axis is located approximately at S2. Flexion/Extension is associated with respiration and cranial sacral motion.
Superior transverse axis
NOTE:
Inhale: sacral base posterior into sacral extension.
Exhale: moves ant. into flexion
Fred Mitchell describes 3 transverse axes and 2 oblique axes. Transverse axes include:
- Superior transverse axis (STA)
- Middle transverse axis
- Inferior transverse axis
This axis is located between the upper and lower limbs of the SI joint. This is the site where postural motion (flexion/extension) occurs.
MIddle transverse axis
NOTE:
-bend forward: sacral base moves ant.
(at terminal flexion, sacrotuberous lig. becomes tight and base moves posteriorly)
Fred Mitchell describes 3 transverse axes and 2 oblique axes. Transverse axes include:
- Superior transverse axis (STA)
- Middle transverse axis
- Inferior transverse axis
This axis is located posterior-inferior to the SI joint. It is involved in inominate/ilia rotation (anterior/posterior) during walking.
Inferior transverse axis
“Ilials around the inferior axis - I for an I”
True/False: Inominate motion around the ITA is anterior and posterior motion that occurs while walking, weight shifts, standing, sitting, and muscular forces of the lower extermities.
True
There are two oblique sacral axes:
- RIght oblique (Right base to Left ILA)
- Left bolique (left base to Right ILA)
This is a dynamic axis in which the sacrum engages during walking. For example, weight bearing on the left leg (by stepping forward with the right) will engage the _____ axis and cause the sacrum to turn towards the ______.
Left axis and turn to the Left
To recap, there are 4 different types of physiologic motion of the sacrum and inominates.
DRIP
- ________: sacram motion during walking around oblique axes.
- _____: sacram motion during breathing around the STA.
- _____: rotation around the ITA
- _____: sacral motion with bending forward and backward around the MTA
- Dynamic
- Respiratory
- Innominate
- Postural
Pubic symphysis is amphiarthrosis with strong ligaments and varying opposing surfaces. It is susceptible to hormonal changes and action of the adductor muscles.
True/False: Physiologic motion may occur about the transverse axes while walking.
True
*motion also occurs with one legged standing, childbirth
Pelvic Shear: Most often occurs superior/inferior. It results in
a. uneven tension on the pelvic/urogenital diaphragm
b. low back pain
c. anterior thigh pain
d. constipation, urinaty symptoms, dyspareunia, suprapubic pain
ALl of the above
What are the two important principles involves in physcial exam diagnosis of pelvic pain/dysfunction?
- Use at least 2 static landmarks
* find assymetry; ASIS heights) - Use a lateralizing test
* indicates side of dysfunction at SI joint
ex: AP compression test; Standing forward bending (Innominate/Pubic) and Seated Forward Bending (Sacrum)
Lateralizing tests indicate what side is more dysfunctional.
In the standing forward bending test (StFBT), a positive test usually indicates _______ dysfunction of the ______. It is sensitive to lower extremity restrictors (such as tight hamstrings)
Iliosacral dysfunction (innominate/pubes)
*PSIS moves greatest distance = dysfunctional
Lateralizing tests indicate which side is more dysfunctional. Seated forward bending tests is indicative of _____ dysfunction (i.e. sacrum). The lower extremity mechanics are eliminated.
Sacroiliac
**PSIS with most movement/greatest distance
What are the landmarks used to assess anterior pelvic dysfunction?
Iliac crest, ASIS, PSIS, pubic tubercles, medial malleoli (leg length)
Pelvis: The following findings describe what pelvic dysfunction?
- ASIS: superior
- PSIS: Superior
- Iliac crest: superior
- Pubic tubercle: superior
- Medial malleolus: superior
*abdominals, thoracolumbar fascia, pelvic floor
-Superior subluxation/Superior inominate shear
- Standing flexion test positive on that side
- non-physiologic dysfunction
NOTE: Symptoms: painful anywhere in pelvis, lower back or extremities
Pelvis: Describe treatment for a superior shear
- Hold above patient’s ankle
- abduct leg to 20 degrees; internally rotate hip
- apply traction and HVLA
- Recheck
Pelvis: The following findings describe what dysfunction?
- Inferior ASIS
- Inferior PSIS
- Inferior Iliac Crest
- Inferior medial malleolus
- Inferior pubic tubercle
Inferior inominate shear (down slipped ilia; minute inferior subluxation of inominate)
**rare, non-physiologic dysfunction
Patient tends to treat with ambulation
Symptoms: like superior shear
Pelvis: How do you treat inferior shear?
Patient hops up and down on dysfunctional leg; OR sits on dysfunction and bounces
Pelvis: The following findings describe what pelvic dysfunction?
- Superior PSIS
- Inferior ASIS
- Inferior Medial malleoli (longer leg)
- Everything Else is Level
* resists posterior rotation
Anterior Inominate ROtation
- inominate stuck in ant. on a transverse axis (ITA)
- tight rectus femoris
Pelvis: How do you treat anterior inominate rotation?
NOTE: always reset pelvis before performing
- Flex hip and knee to barrier (bend knee towards head)
- Stabilize sacral base
- Patient tries to extend hip/leg to resistance
* *repeat and recheck
NOTE: muscle energy is “joint mobilization”
Pelvis: The following findings describe what pelvic dysfunction?
- Inferior PSIS
- Superior ASIS
- Superior Medial malleoli (shortened leg)
- Everything Else is Level
* resists anterior rotation
Symptoms: groin or knee pain (meralgia)
Posterior inominate rotation
Pelvis: How do you treat posterior inominate rotation?
- Extend hip off table
- Stabilize other side (ASIS)
- Patient tries to bring leg up to resistance
- repeat w/ ME
- recheck at least 2 landmarks
Pelvis: The following findings describe what pelvic dysfunction?
External rotation around a vertical axis
- ASIS more laterally displaced from midline
- PSIS more medially displaced to midline
Outflare
Tx: 1. Flex hip to 90 degrees (medially) 2. Stabilize PSIS 3. ME (patient tries to abduct knee, with resistance) 4. Lateral traction to PSIS Repeat and Recheck
**Use lateral leg muscles (Abductors)
Pelvis: The following findings describe what pelvic disorder?
- ASIS more medially displaced
- PSIS more laterally displaced
- Internal rotation around a vertical axis
- Symptoms: Pelvic pain
Inflare
Tx: Indian style
- Abduct knee and stabilize opposite ASIS
- Patient tries to bring knee back to midline (adduct)
- Muscle energy; further abduct
- Repeat/Recheck
*Medial leg muscle to treat inflares
Pelvis: The following findings describe what pelvic dysfunction?
- Superior pubic symphysis
- Medial malleolus inferior (long leg)
- Everything else normal/symmetrical
Symptoms: suprapubic pain, constipation, urinary, LBP, anterior thigh pain, dysparunia
Superior pubic shear
Tx:
- Drop leg off table and stabilize opposite ASIS
- Patient adducts and Flexes leg (up and in)
- ME x 3
- Recheck
**adductors and abductors
Pelvis: The following findings describe what pelvic dysfunction?
- Inferior pubic symphysis
- Medial malleolus superior (short leg)
- Everything else normal/symmetrical
Symptoms: suprapubic pain, constipation, urinary, LBP, anterior thigh pain, dysparunia
Inferior pubic shear
Tx:
- Flex patient’s leg; stabilize ischial tuberosity
- Patient extends leg against resistance
- etc.
**adductor and abductors
Pelvis: What do I treat first?
LIPLSIP
- Lower extremity (majority of LBP)
- Innominate shears
- Pubic shears (somatic dysfunction)
- L5 (lumbars)
- Sacrum
- Innominate rotations (Ilia)
- Psoas (T12 and pelvis must be functional 1st)
*treat non-physiologic strains first
Sacrum: The Sacrum receives Sympathetic nerve supply via _______ and parasympathetic via ______
Sympathetic: T12-L4; sacral symp. trunk
PNS: S2-4 sacral plexus (left colon and pelvic viscera)
Sacrum: The Sciatic nerve is the muscular branch of the sacral plexus (L4-S3). It is closely associated with what muscle?
Piriformis
*piriformis hypertonicity can cause sciatica (referred pain to posterior thigh)
Sacrum: Which of the following are true ligaments?
a. Anterior sacroiliac
b. Interosseous sacroiliac
c. Posterior sacroiliac
d. Posterior iliosacral
Answer: A-C
Anterior sacroiliac:
–stretched w/ FLEXION; INCREASED lordosis
Posterior and Interosseous:
–stretched w/ EXTENSION; DECREASED lordosis
Sacrum: The accessory ligaments are Iliolumbar (L4-5 to iliac crest) and include:
- sacrospinous and sacrotuberous ligaments.
They restrain _____ movement of the sacrum
Anterior (Flexion)
Sacrum: _______ muscles including the erector spinae, and quadratus lumborum provide _____ to the sacrum.
stability
Sacrum: ________ influence sacral motion via attachment to the sacrotuberous and sacrospinous ligaments
Hip extensors
Sacrum: The iliopsoas is often involved in lumbopelvic dysfunction, while the _____ is the only muscle with direct attachment to the sacrum
Piriformis
Sacrum: The axes of rotation include
- Superior transverse (STA)
- Middle transverse (MTA)
- Inferior transverse (ITA)
- Left and Right Oblique (LOA and ROA)
This axis involves craniosacral flexion and extension and respiration
Superior Transverse axis
Sacrum: The axes of rotation include
- Superior transverse (STA)
- Middle transverse (MTA)
- Inferior transverse (ITA)
- Left and Right Oblique (LOA and ROA)
This axis involves lower extremity and innominate motion
ITA
Sacrum: The axes of rotation include
- Superior transverse (STA)
- Middle transverse (MTA)
- Inferior transverse (ITA)
- Left and Right Oblique (LOA and ROA)
This axis involves spinal (postural) flexion and extension
MTA
Sacrum: The axes of rotation include
- Superior transverse (STA)
- Middle transverse (MTA)
- Inferior transverse (ITA)
- Left and Right Oblique (LOA and ROA)
These axes involve walking and combined spinal motion
LOA and ROA
Sacrum:
- ________: anterior movement of the sacral base around a transverse axis in relation to the ilia
- _______: posterior movement of the sacral base around a transverse axis in relation to the ilia
- Flexion/Nutation
2. Extension/Counternutation
Sacrum: The following are motion tests for Sacral Diagnosis:
- L5 rotation
- Seated FLexion Test
- Backward bending (Sphinx)
- Lumbar spring
Describe what each tests for
- L5
- compensated; opposite sacral rotation - Seated flexion test
- -sacroilial motion (dysfunction)
- patient’s feet on the ground!! - BBT
- -ability of sacrum to flex w/ extension (BBT) of lumbar spine
- -negative: flexed
- -positive: extended - Lumbar spring
- -sacral extension prevents lumbar spring/flexibility
- -positive test: stiffness/lack of spring
- -negative: springy
Sacrum: Describe the steps involved in diagnosing the sacrum
- Positive seated flexion test (which one moves is dysfunction)
- -thumbs under PSIS - Deep Sacral Sulcus
- Which side is ILA posterior/caudad?
- Check L5. Is it compensated?
(Transverse process will be more posterior on the same side as the deep sacral sulcus – if sulcus is deep on right, transverse process posterior on the right) - Backward bending test
- -if it gets better (negative) = flexion (same letter)
- -if it gets worse (positive) = extension
Sacrum: In a flexed dysfunction, what soft tissue is involved? What are common symptoms?
Iliolumbar ligaments and anterior sacroiliac ligaments
*lower back pain, SI pain, pain with sitting, difficulty bending forward and difficulty getting up and down from a chair
Sacrum: The following findings describe what type of dysfunction?
- Seated forward bending test + on L.
- Left deep sacral sulcus
- Left post. caudad ILA
- L5 rotated Left
- BBT: findings improve/negative
(spring test -)
Left unilateral Flexion
*left side held flexed about the MTA
Sacrum: Describe how you would Treat a Unilateral Sacral Flexion
- Patient prone (on belly)
- Monitor sacral sulcus, abduct leg (15 degrees) and internal rotation slightly
- Place heel on hand on ypsilateral base of sacrum
- Apply anterior and cephalad force (during inhalation)
(resist with exhalation) - Recheck
Sacrum: The following findings describe what type of dysfunction?
- Positive seated flexion on R. side
- Deep sacral sulcus on Left
- Posterior caudad ILA on Left
- Positive BBT (gets worse)
- Positive lumbar spring
Symptoms: Lower back pain, difficulty bending backward, “lean over to pick up something and can’t get back up”
Right side Unilateral Extension
Sacrum: Describe how you would treat a Unilateral Sacral Extension
- Patient prone (on belly)
- Monitor sacral sulcus, abduct leg (15 degrees) and internal rotation slightly
- Place heel on hand on ypsilateral base of sacrum
- Apply anterior and caudad force (during exhalation)
(resist with inhalation)
x5
- Recheck
Sacrum: True/False: Symptoms of sacral torsions include: SI pain, LBP (lower back pain), sciatic and pelvic pain and bowel complaints.
They often involve the piriformis, tension on sacrotuberous and sacrospinous ligaments and tension on the pelvic floor muscles.
True
Named: Rotation/Axis
First letter: direction sacrum is rotated
Second letter: oblique axis
Sacrum: There are two forward (flexed) torsion: L/L and R/R
- WIth a L/L, L5 neutral mechanics should be rotated ____ but sidebent _____
Rotated Right (compensate) but sidebent Left
Sacrum: There are two backward torsions (L/R and R/L). With these torsions, L5 follows non-neutral mechanics. Thus,
- With a L/R torsion, L5 non-neutral mechanics should be rotated ______ but sidebent _____
- With a R/L torsion, L5 should be rotated _____ and sidebent _____
- rotated right, sidebent right
2. rotated left, sidebent left
Sacrum: Unilateral dysfunctions tend to have primarily flexion or extension dysfunctions on what sides?
- Flexed: MC LSF
- Extension: MC RSE
*bilaterals possible
Sacrum: Torsions involve anterior (flexed) or posterior (extended) dysfunctions that are most common on which sides?
- Anterior = L/L sacral torsion
2. Posterior = L/R sacral torsion
Sacrum: The following describes which type of sacral torsion?
- Positive seated flexion on Rt.
- Deep sacral sulcus on Rt.
- Posterior caudad ILA on Left
(axis on Left) - L5 compensated - rotated right, sidebent left
- BBT negative (gets better)
(spring test negative)
L/L sacral torsion
- Right side = flexed
- Left side = extended
- Rotated to the left (on LOA) – by right piriformis
NOTE: If it gets better = same letter, feet together, face the leather
Sacrum: Describe Tx for a Flexed (same letter) Sacral Torsion
Same letter, feet together, face the leather
- Patient on stomach
- bend knees up and push on PSIS to the side of dysfunction (same letter)
- Drop legs off table
- push on shoulder – ME (stabilize joint)
- ME w/ legs (stabilizing joint)