5 tenets of the primary respiratory mechanism
- The inherent rhythmic motion of the brain & spinal cord
- Fluctuation of the CSF
- Mobility of intracranial & intraspinal membranes (RTM)
- Articular mobility of cranial bones
- Involuntary mobility of the sacrum between the ilia
reciprocal tension membrane (RTM) consists of
- falx cerebri
- tentorium cerebelli
- formed by dural reflections
(dura is contiguous with periosteum of the skull)
cranial physiologic motion influences
- dural membrane (RTM)
- coiling/uncoiling of CNS
- fluctuation of CSF
cranial physiologic motion correlate with
- flexion-external rotation-inhalation
- extension-internal rotation-exhalation
(inhalation/exhalation related to respiratory phases of primary respiratory mechanism (PRM))
sacral movement: motion occurs around
transverse axis in area of 2nd sacral segment posterior to the canal (respiratory axis)
sacral movement includes
- flexion (counternutation) - base moves posterosuperiorly and apex moves anteriorly toward pubes
- extension (nutation) - base moves anteriorly and apex moves posteriorly
how does cranial influence sacrum?
spinal dura/core link
midline bones include
- sphenoid
- occiput
- ethmoid (median plate)
- vomer
- sacrum
midline bones physiologic motion occurs during which phase?
flexion and extension phases
paired bones include
- temporal
- parietals
- frontals
- ethmoid (lateral mass)
- nasals
- lacrimals
- maxillae
- palatines
- zygomae
- inferior conchae
- mandible
paired boned physiologic motion occurs during which phase?
external and internal rotation phases
cranial rhythmic impulse consists of 2 phases
- flexion - external rotation of the paired bones with increased width of the head (transverse diameter)
- extension - internal rotation of the paired bones with increased length of the head (AP diameter)
internal rotation is paired with _____. external rotation is paired with ______
- internal with extension and exhalation
2. external with flexion and inhalation
position of vault hold
hands palpate the frontal, sphenoid, temporal, and occipital bones, and the membranes and fluids between them
what does the vault hold allow the operator to do?
enables operator to feel the dysfunction in order to initiate treatment
flexion and extension phase include what motion and around which axis?
rotational around 2 transverse axis - level of foramen magnum and body of sphenoid
what motion occurs at SBS during flexion phase?
- basiocciput and basisphenoid move cephalad
2. occipital squama and wings of sphenoid move cadually
what motion occurs at SBS during extension phase?
- basiocciput and basisphenoid move caudad
2. occipital squama and wings of sphenoid move cephalad
