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Spine Stabilization
Lecture 6
65
Medical
Graduate
11/12/2015

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Term
3 subsystems involved with spinal stability
Definition
osteoligamentous, neural control, muscle
Term
passive system of spinal stability
Definition
osteoligamentous
Term
active system of spinal stabiliity
Definition
musculotendinous
Term
tissues of the passive subsystem of spinal stability (5)
Definition
bone, ligament, facet joints, fascia, disc
Term
two important muscles of the active subsystem
Definition
transversus abdominus, multifuidus
Term
abnorminal activaiton of this muscle is often associated with acute and chronic lbp
Definition
transversus abdominis
Term
when should training of the transversus abdominis be introduced for acute LBP for more rapid recovery
Definition
early activation/training
Term
which muscle creates a rigid cylinder through bony and fascial attachments
Definition
transversus abdominis
Term
which muscle of lubmar stabilization increases intra abdominal pressure
Definition
transversus abdominis
Term
what muscle of lumbar stabilization is a tonic muscle with type 1 fibers predominante
Definition
transversus abdominis
Term
muscle of lumbar stabilization that functinos at 20-30% of a MVC
Definition
transversus abdominis
Term
muscle of lumbar stabilizaiton which provides segemental stiffness and controls motion
Definition
lumbar multifuidus
Term
muscle of lumbar stabilizaiton which is found to be responsible for up to 2/3 of spinal stiffness
Definition
lumbar multifidus
Term
muscle of lumbar stabilizaiton which is found to have a decreased cross sectional area and atrophy observed unilaterally on same side of LBP and at corresponding spinal levels
Definition
lumbar multifidus
Term
muscle of lumbar stabilizaiton which specific segmental strengthening possible and correlates with decreases in LBP and increased function
Definition
lumbar multifidus
Term
muscle of lumbar stabilizaiton which are part of the global system (4)
Definition
rectus abdominis, internal/external obliques, lateral fibers of QL, lumbar iliocostalis (TV)
Term
Global vs Local System: which eccentricaly decelerates spine
Definition
global
Term
Global vs Local System: controls rotation of spine as a whole
Definition
global
Term
Global vs Local System: prime movers and create more general stabilization
Definition
global
Term
Global vs Local System: muscles of local system (6)
Definition
iliocostalis and longismus thoracic (LV), medial fibers of QL, diaphgragm, lumbar multifidus, transversus abdominis, posterior fibers of internal oblique
Term
Global vs Local System: segmental stabilization
Definition
local system
Term
what is the neutral zone
Definition
portion of teh total physiologic range of intervertebral motion
Term
how does movement occur within the neutral zone
Definition
little resistance
Term
what surround the normal neutral position of the segment
Definition
the zone of movement
Term
when does the elastic zone start?
Definition
at the end of the neutral zone
Term
when does the elastic zone end
Definition
physiologic range
Term
how does motion occur within the elastic zone
Definition
considerable internal resistance
Term
lumbo pelvic stability is provided through what 3 myofascial systems
Definition
thoracolumbar fascia, fascia lata, abdominal fascia
Term
each fascial system has 2 important similarities
Definition
muscles attached to fascia exert a tensile force by pulling on fascia
muscles within fascial envelopes exert a pushing force which also increases tension on the fascial walls
Term
abdominal mechanism: functions: how does it provide support to the spine
Definition
anterior and anterolateral support
Term
abdominal mechanism: functions: increases tension to what tissues
Definition
thoracolumbar and abdominal fascia
Term
abdominal mechanism: functions: checks shear in which direction
Definition
anterior
Term
abdominal mechanism: functions: checks anterior shear via what
Definition
control of pelvis
Term
abdominal mechanism: functions: checks anterior shear via control of pelvis in which plane
Definition
sagittal plane
Term
abdominal mechanism: functions: controls rate and apmlitude of torsion to what part of the spine?
Definition
lumbar
Term
abdominal mechanism: functions: can increase compression at what joints (2)
Definition
sacroiliac jts and pubis (force of form and force closure model)
Term
4 causes of instability
Definition
trauma
age-related degeneration
muscle insuffiency
combo of above
Term
3 anatomic changes associated with instability
Definition
decreased disc height
joint capsule laxity
ligamentous laxity
Term
physical evidence of instability can be seen on the bones d/t what?
Definition
wolff's law. osteophyte and traction spurs where stresses are greatest and thinner bone at areas where load is diminished
Term
Kirkaldy-Williis and Farfan model of instability: 3 steps
Definition
dysfunction
isntability/hypermobility
re stabilization
Term
Kirkaldy-Williis and Farfan model of instability: typical peak incidence of disabling symptoms is what age
Definition
35-55 y.o
Term
Common Features of Clinical Instability: postures
Definition
status worse with prolonged postures
Term
Common Features of Clinical Instability: hx of (3)
Definition
low grade pain between acute episodes
catches in back
dancing, gymnastics, improper stretching
Term
Common Features of Clinical Instability: what type of frequent self tx and its problem
Definition
frequent manipulaito with short term results
Term
Common Features of Clinical Instability: rapid fluctiuation in what
Definition
in function from normal to incapacitaiton
Term
Key examination findings of instability: inconsistent response to what testing
Definition
repeated movements
Term
Key examination findings of instability: worse with what position
Definition
flexion in standing
Term
Key examination findings of instability: better in what position
Definition
flexion in lying
Term
Key examination findings of instability: AROM?
Definition
excessive
Term
Key examination findings of instability: what happens during flexion
Definition
abnormal mechanics
Term
Key examination findings of instability: this clinical sign
Definition
Gower's signs (thigh climbing)
Term
Key examination findings of instability: what takes place of lumbar flexion/extension
Definition
hip and knee flexion
Term
Key examination findings of instability: 2 positive findings
Definition
general ligamentous tests (Beighton's scale)
stress radiographs
Term
Key examination findings of instability: pain with what
Definition
spring testing and increased mobility
Term
mgmt of stabilization: exercise should include what
Definition
co-contraction of trunk extensors and flexors in a position of comfort, maintaing proper poisition while carrying out normal function
Term
what is successful stabilizatio
Definition
fixing one part of the body while permitting movement of surrounding parts
Term
CPR for stabilization
Definition
age under 40
slr >91
(+) prone instability test
hypermobility with spring testing
aberrant motions with flexion extension
Term
what are considered aberrant motions with flexion/extension
Definition
painful arc, gower's sign, instability catch, reversal of lumbopelvic rhythm
Term
stabilization cpr: how many factors must be present for a positive outcome
Definition
3+
Term
prediciting failure for stabilization: 4
Definition
negative prone instability
absence of aberrant motoins
FABQ <9
no hypermobility with spring testing
Term
3 principles of stabilization of training
Definition
conscious activiation and control of key muscles of trunk and pelvic girlde must be achieved before trunk stabilization can be progressed
training initially in mid positoin (neutral) lessens risk of adverse stress on injured structures
too much resistance on a weakened muscle can be inhibitory, causing loss of control and substitution
Term
Overview of a stabilization program: step 1 of 4
Definition
re-activating the stabilizing muscles (proper sequencing, always pain free)
Term
Overview of a stabilization program: step 2 of 4
Definition
re-train their holding capacity (low level contraction sustained for seconds to minutes)
Term
Overview of a stabilization program: 3 of 4
Definition
retrain their ability to automatically contract appropriate with other synergist to support and protect the spine
requires thousands of repetitions
most programs reference in literature 10-12 weeks in duration
Term
Overview of a stabilization program: 4 of 4
Definition
retrain to automatically activate under varous loads and skills
msut incorporate into functional tasks and movement patterns
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