back ache
TRANSCRIPT
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APPROACH TO LOW BACK PAIN
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LOW BACK PAINIS A SYMPTOM- NOT A DISEASE
McNab
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Cause of the pain may be -
Within the spine
Lesion outside the spine
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Within the spine-
Spondylogenic
Neurogenic
Outside the spine
Viscerogenic
Vascular
psychogenic
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Spondylogenic
Bony components
Soft tissues of motion segment-disc,lig,muscles
SI joints
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Congenital- spina bifida, listhesis, hemivertebra,sacralisation
Traumatic - fractures, lig injuries, LS strain, ruptured disc
Inflammatory-TB, pyogenic, brucellosis, RA, Anks spond
Degenerative- DDD, spondylosis, senile osteoporosis
Neoplastic-primary secondary
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NeurogenicTension
Irritation
compression
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Discogenic painDisc herniationAnnular tearSinuvertebral nerveDecrease pH within a deg disc –irritate the
nerve root
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Arise frfom ventral root and gray rami communicants near DRG
Innervates PLL,ant dura,post annulus,blood vessels
ALL,lat & ant annulus –sympathetics
SP.VIP,CGRP
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FACET JOINT PAINInnervated by medial branches of dorsal
primary ramiFacet capsule-contains encapsulated,non
encapsulated & free nerve endingsMechanoreceptors-inflamation sensitizes
these to movements of facet jtNociceptors-unmyelinated & plexiform fibres
sensitizes to chemical or mechanical stimulus
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mechanismInjury to articular cartilage as in OADEGEN changes of facet jt-static n dynamic
compression of nerve root-lateral recess stenosis
Blockage of facet by synovial fold
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radiculopathyMechanical deformation-intraneural tissue
rreactionsNerve roots –no effective blood nerve barrier
--lack epineuriumInflammation with mechanical compresion
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Outside the spineAbdominal – pancreatitis, cholecystitis ,
peptic ulcer
Pelvic – ovaries,tubes,intrapelvic tumours
Vascular- aortic aneurysms,PVD
Psychogenic- Wadells signs
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AIMTO LOCALISE THE PAIN GENERATOR IN THE
SPINE-facet,disc…
THE NEUROLOGICAL LOCALISATION-Myelopathy/Radiculopathy(root lesion)
The Aetiological/Pathological localisation –cong/trauamatic/infective/inflammatory/degenerative/neoplastic
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APPROACHHISTORY
PHYSICAL EXAMINATION
NEUROLOGICAL EXAMINATION
INVESTIGATION
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HISTORYPAIN- Commonest symptom
Site of pain Axial
Radicular involving limbs
combination of both
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Onset,Duration,ProgressionAcute onset – fall,lifting weights, sports
injury
Insidious onset with rapid progression-infection, path #, tumours 1* 2*
Referred pain-pancreatitis,aortic aneurysm,pelvic and rectal conditions
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duration of painAcute- strains, sprainsChronic- degenerative conditionsa/c on chronic
Radiation of painNature of painAggravating/relieving factors
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Nature and intensity of painDiscogenic- focal,aching in nature,increased with
activity causing axial loading,decreased with rest
Facetal pain-pain on extension of spine (Can be of muscle strain)
Degenerative-Pain and stiffness in morning
Inflammatory-prolonged pain with stifness > 1hr
Tumour/infection- Night Pain unrelieved by rest
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Neurogenic pain-radicular,claudicatonRadicular
thoracic spine-band like along the rib
Lumbar spine-radiates below knee
L3-4-Anterior thigh
L5- Dorsum of foot, 1 web space
S1-Buttock/posterior thigh
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Neurogenic claudicationDiffuse pain n numbness
Progressive loss of walking ability/forward stooping walking
Symptoms produced by activities causing extension of spine, relieved by flexion
To r/o vascular claudication
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Neuorgenic vs vascular
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Occupational history-return to heavy physical work may not be possible
Family n social history- assess pts resources and support for treatment plan
Other systems assessment-CVS,PULMO,GI ,GU,ENDO
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Nonorganic physical signs-The Waddell signsTenderness-superficial,nonanatomical
Simulation- axial loading, rotation
Distraction-SLR
Regional-weakness,sensory
Overreaction-disproportionate verbalization,inappropriate facial expression,tremor,collapsing,sweating
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INSPECTIONGaitAntalgic one leg-nerve root
irritation,muscle weaknessSciatica :walk with hip more extended &
knee more flexedHigh stepping : foot drop -to clear the
groundSpastic:drags the foot
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Trendelenburgs : L5 - abductor lurch
S1- extensor lurch toe walking not possible
L4-heel walking not possible
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Look from front/back &sidesLevel of shouldersiliac crest-pelvic obliquity-LLD,SpineCoronal plane-scoliosisSagittal plane-Kyphosis/lordosisAngular kyphusKnuckle-1 vertebraGibbus-2 vertebraRound kyphus- > 2 vertebraOverall spinal balance
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The plumb line
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Sciatic list
Shoulder disc Axillary disc
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Any swellings-cold abscess.Spina bifida-occulta/manifestaStep signAny scars/sinuses
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PalaptionTemp
Tendernessdirect pressureTwistdeep thrust
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Step + in > 50% slipParaspinal localised tenderness-facet
arthritis, TP #Cold abscess
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movementsFlexionExtensionRotatonSide bending
Schober testExtension catch-
instability,disc pathology
Ext&lat bending-pain n facet pathology
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MeasurementsChest expansion-at nipple levelShould be 5 cm,< 2.5cm suggests ASR/o LLD
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Neurological examinationMSECNGait-type -Posture Sciatica-walk with hip extended n knee
flexed - to reduce tension on Sciatic N Heel walking-L4Toe walking - S1
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motorBulkTonePowerCoordinationAbnormal movementsreflexes
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L2
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L3
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L4
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L5
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coordinationHeel shin testRombergs sign
Involuntary movements
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sensory
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Touch-supDeepPain& tempPosterior column-joint sense,vibration
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Reflexes- superficial
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Plantar reflex
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Bulbocavernous reflex
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Deep reflexes
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Bladder- voluntary control
RetentionDribblingfrequency
BowelControl of
sphinctersconstipation
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Nerve root tension signs
SLR LASEGUE/BRAGGARD
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BOWSTRING TESTSUDDEN SCIATIC STRETCH TEST
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FNST
Well leg raising test-axillary disc
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Piriformis syndromeEntrapment of sciatic nerve by the piriformis as
it passes thru the sciatic notchCauses:hypertrophyTraumaExcessive exercisesSpasm n inflammationAnomalies of piriformisPseudo aneurysm of inf gluteal arteryTraumatic myositis ossifcans
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Clinical featuresHistory of trauma to SI or gluteal regionExacerbation of symptoms by lifting leg or
stooping/difficulty in walkingTenderness over sciatic notchSausage shaped mass over piriformisFelt by rectal exmn-pathognomonic
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Positive SLR,Lasegue signFreiberg sign-pain with forced int rotation
of extended thighPositive sign of Pace and Nagle-pain with
resistance to abduction n ER the thighTibial nerve is less affected than peroneal
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TreatmentPhysiotherapyNSAIDStretchingUltrasoundLocal steroid/anaestheticIf no relief-surgical release of piriformis
muscle
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TEST FOR SI JT
COMPRESSION TEST DISTRACTION TEST
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Axial rotation stress test
Pump handle test Gaenslen’s test
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FABER test
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Hip joints/other jointsOther systems
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investigationsBlood Plain x rayCtMriBonescanInjection studiesBiopsy
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Plain Xray APAlignment of vertebral columnLesion of pedicles/ TPSide to side collapseParavertebral soft tissue shadowsscoliosis
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Lateral viewShape n size of vertebralbodyAnterior n posterior walls integritySuperior n inferior surfaces of bodyWedgingDisc space Spinal canal-between post end of body n
lamina-space occupied by cord
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oblique views-for pars defectsScannograms-to view the entire spinal
columnCt-demonstrates bony lesions betterMri- demonstrates soft tissues betterScrrening of whole spine