common spinal problems for students
TRANSCRIPT
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Daniel Chan FRCSEd FRCSOrthDaniel Chan FRCSEd FRCSOrthConsultant spinal surgeon, Consultant spinal surgeon,
PEOC, RD & EPEOC, RD & E
Common spinal Common spinal disorders anddisorders and
General principlesGeneral principles
of spinal surgeryof spinal surgery
For the medical For the medical studentsstudents
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AssessmentAssessment
History, physical History, physical examination, simple examination, simple investigation, special investigation, special investigationinvestigation
Mechanical Mechanical presentation: Axial presentation: Axial painpain Exclude fractures, Exclude fractures,
tumours and infectiontumours and infection Red flags Red flags Yellow flagsYellow flags
Neurological Neurological presentationpresentation Spinal cordSpinal cord Cauda euinaCauda euina Nerve rootsNerve roots Document the deficitDocument the deficit Duration of the deficitDuration of the deficit Rapidity of progressionRapidity of progression
Deformity :local, Deformity :local, regional, globalregional, global Coronal balanceCoronal balance Sagittal balanceSagittal balance
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Non spinal conditionsNon spinal conditions CVACVA Gillain BarreGillain Barre Transverse myelitisTransverse myelitis Amyotrophic neuralgiaAmyotrophic neuralgia MSMS VascularVascular
dissecting aneurysmdissecting aneurysm Saddle embolismSaddle embolism
Peripheral nerve palsiesPeripheral nerve palsies Herpes zosterHerpes zoster
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Surgical principlesSurgical principles
DecompressionDecompression Direct Direct IndirectIndirect
StabilisationStabilisation In situIn situ Correction of Correction of
deformitydeformity CombinedCombined
When, how, whyWhen, how, why
PathologyPathology DegenerativeDegenerative InflammatoryInflammatory NeoplasticNeoplastic InfectiveInfective TraumaticTraumatic CongenitalCongenital developmentaldevelopmental
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DegenerativeDegenerativeL4/5 Disc herniations
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IndicationsIndications for Surgery- for Surgery-AbsoluteAbsolute
Acute cauda equina syndrome - Acute cauda equina syndrome - emergencyemergency
Progressive neurological deficit – urgentProgressive neurological deficit – urgent
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Acute cauda equina Acute cauda equina syndromesyndrome LBPLBP Root CompressionRoot Compression
Motor / sensoryMotor / sensory Uni- / BilateralUni- / Bilateral
Sphincter DisturbanceSphincter Disturbance MotorMotor
Anal ToneAnal Tone Urinary RetentionUrinary Retention Residual volumeResidual volume
SensorySensory ““SaddleSaddle”” numbness numbness No sensation with No sensation with
bladder tuckbladder tuck CESI vs CESCCESI vs CESC (Reflexes)(Reflexes) (SLR)(SLR)
Do a rectal examination and record it
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Central L4/5 Disc Central L4/5 Disc ProlapseProlapse
Needs emergency surgery
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Indications for Surgery-Indications for Surgery-RelativeRelative
Natural history favourable: 90% settle over 3 Natural history favourable: 90% settle over 3 monthsmonths
Failure of appropriate time and conservative Failure of appropriate time and conservative treatment treatment 6-8 weeks 6-8 weeks
Unremitting leg pain in appropriate distributionUnremitting leg pain in appropriate distribution Nerve tension signs (SLR limited by leg pain)Nerve tension signs (SLR limited by leg pain) Imaging confirmation Imaging confirmation
done at time when surgery is contemplateddone at time when surgery is contemplated When patient accepts risk to reward ratioWhen patient accepts risk to reward ratio Recurrent attacks of leg painRecurrent attacks of leg pain
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Lumbar MicrosurgeryLumbar Microsurgery
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DegenerativeDegenerative Spinal stenosisSpinal stenosis
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Spinal StenosisSpinal Stenosis
Elderly patientElderly patient Leg pain: radicular or claudicatingLeg pain: radicular or claudicating ParaesthesiaParaesthesia ““Paralysis”: jelly legsParalysis”: jelly legs Unusual to have acute deficit…usually Unusual to have acute deficit…usually
additional PID, synovial cyst or pin hole additional PID, synovial cyst or pin hole stenosisstenosis
Cervical spondylosis and extension injury = Cervical spondylosis and extension injury = central cord syndromecentral cord syndrome
Tandem stenosisTandem stenosis
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Limited segmental Limited segmental decompressiondecompression
Technique of LSDTechnique of LSD
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DegenerativeDegenerative
Degenerative Degenerative spondylolisthesisspondylolisthesis
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Degenerative Degenerative spondylolisthesisspondylolisthesis
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Degenerative scoliosisDegenerative scoliosis
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Degenerative scoliosisDegenerative scoliosis
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Degenerative scoliosisDegenerative scoliosis
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Degenerative scoliosisDegenerative scoliosis
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Pars interarticularisPars interarticularisSpondylolysis: The Scotty Dog Spondylolysis: The Scotty Dog Spondylolytic spondylolisthesisSpondylolytic spondylolisthesis
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Spondylolytic Spondylolytic spondylolisthesisspondylolisthesis
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Cervical Radiculopathy SignsCervical Radiculopathy Signs
Shoulder abduction signShoulder abduction sign Rests arm on head – reduces Rests arm on head – reduces
nerve root tension and empties nerve root tension and empties epiduralsepidurals
Holds head tilted to opposite sideHolds head tilted to opposite side Opens foramenOpens foramen
C7 painC7 pain Tend to pronate forearm when Tend to pronate forearm when
describing the pain unlike C6 and describing the pain unlike C6 and CTSCTS
Extension narrows foramenExtension narrows foramen Helps distinguish from muscular Helps distinguish from muscular
neck pain and shoulder pathologyneck pain and shoulder pathology
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C5C5 Turner Parson’s Turner Parson’s
syndrome (Neuralgic syndrome (Neuralgic amyotrophy)amyotrophy)
C6C6 Carpal tunnels Carpal tunnels
syndromesyndrome C7 C8C7 C8
Thoracic outlet Thoracic outlet syndromesyndrome
C8/T1C8/T1 Pancoast tumoursPancoast tumours
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Cervical RadiculopathyCervical Radiculopathy1.1. Acute – Soft DiscAcute – Soft Disc
2.2. Chronic – Hard DiscChronic – Hard Disc
3.3. Disc Height Disc Height ↓ - foraminal compression↓ - foraminal compression
4.4. Facet - foraminal compressionFacet - foraminal compression
MRI Gold StandardMRI Gold Standard Compression in 20% of asymp ptsCompression in 20% of asymp pts
CT bony pathology and foramensCT bony pathology and foramens 45 deg to sag plane45 deg to sag plane
Dynamic fluoroscopy for stabilityDynamic fluoroscopy for stability Myelography - rarelyMyelography - rarely
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Natural HistoryNatural History FavourableFavourable
Lees 1963Lees 1963 51pts 2-19yrs FU51pts 2-19yrs FU 45% single episode no recurrence45% single episode no recurrence 30% mild Sx30% mild Sx 25% persis / worse Sx25% persis / worse Sx No progression to myelopathyNo progression to myelopathy 75% recovers75% recovers
90% recovers over 3 to 6 months90% recovers over 3 to 6 monthsEpidemiology of cervical radiculopathyA population-based study from Rochester, Minnesota, 1976 through 1990Kurupath Radhakrishnan1,2,*, William J. Litchy1, W. Michael O'Fallon3 and Leonard T. Kurland2
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Separate the woods from the Separate the woods from the treestrees
Look for signs of myelopathyLook for signs of myelopathy Clumpsy arms/hands and legsClumpsy arms/hands and legs SpasticSpastic Upper motor neurone signs!!Upper motor neurone signs!!
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Acute cord compression Acute cord compression cervical disc herniationcervical disc herniation
Needs emergency / urgent surgery
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Myelopathic SymptomsMyelopathic Symptoms Subtle / varied presentationSubtle / varied presentation Pins & needles / numbness in Pins & needles / numbness in
handshands Stiff hands and reduced dexterityStiff hands and reduced dexterity Balance problems / recurrent fallsBalance problems / recurrent falls Stiff legs that tire easilyStiff legs that tire easily
Shooting sensations through bodyShooting sensations through body Spontaneous twitching / jerking Spontaneous twitching / jerking
limbslimbs Bowel or bladder disturbance Bowel or bladder disturbance
(uncommon)(uncommon) Pain is not a common symptomPain is not a common symptom
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Upper motor neurone signsUpper motor neurone signsLower limbsLower limbs
Unsteady wide Unsteady wide based gaitbased gait
Romberg / Romberg / Walking RombergWalking Romberg
Unable heel toe Unable heel toe gaitgait
Triangle step testTriangle step test LL ’’Hermittes signHermittes sign HyperreflexiaHyperreflexia
Knee / Ankle Knee / Ankle Clonus Clonus
Extensor Plantar Extensor Plantar Response Response (Babinski) (Babinski)
Upper limbsUpper limbs HoffmanHoffman’’s signs sign Ono 1987Ono 1987
Grip release testGrip release test Finger escape Finger escape
signsign HyperreflexiaHyperreflexia
Inverted Radial Inverted Radial ReflexReflex
Scapulohumeral Scapulohumeral reflexreflex
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Natural History - PoorNatural History - Poor
Clarke 1956Clarke 1956 120 pts120 pts 75% episodic 75% episodic ↓↓ 20% slow ↓20% slow ↓ 5% rapid ↓5% rapid ↓
Symon 1967Symon 1967 67% steady ↓67% steady ↓
Nurick 1972Nurick 1972 30% 30% ↑ non surg↑ non surg 50-73% ↑ surg50-73% ↑ surg
Phillips 1973Phillips 1973 37% ↑ non surg37% ↑ non surg 57-73% ↑ surg57-73% ↑ surg
Sampath 2000Sampath 2000 Surgery betterSurgery better ↓ ↓ neuro Sx and painneuro Sx and pain ↑ ↑ functional statusfunctional status
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Spinal infectionSpinal infection
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InfectionInfection
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InfectionInfection
Pyogenic or TBPyogenic or TB At risk:At risk:
i.v drug usersi.v drug users elderlyelderly Immuno compromisedImmuno compromised DiabeticsDiabetics Renal failureRenal failure Urological manipulationUrological manipulation Cardiac: SBECardiac: SBE
Epidural Epidural abscessabscess MRI + GadMRI + Gad Neurology in Neurology in
cord area needs cord area needs emergency emergency decompressiondecompression
Spondylodiscitis Spondylodiscitis instability and instability and
acute deformity acute deformity
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Spinal infection: Spinal infection: important lessonimportant lesson
Late diagnosis frequentLate diagnosis frequent High index of suspicionHigh index of suspicion Risk factors!Risk factors! Early diagnosis antibiotics alone sufficeEarly diagnosis antibiotics alone suffice Late diagnosis with bone destruction Late diagnosis with bone destruction
leads to spinal deformity and further leads to spinal deformity and further neurological compromiseneurological compromise
Difficult surgery then needed Difficult surgery then needed
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MSCCMSCC Any neurological deficit requires urgent/ Any neurological deficit requires urgent/
emergency MRIemergency MRI Staging for prognosisStaging for prognosis What is the primaryWhat is the primary Is it metastaticIs it metastatic Is it operableIs it operable Is it treatable with radio/chemotherapy Is it treatable with radio/chemotherapy
alonealone Surgery is palliativeSurgery is palliative Will the patient benefit from surgeryWill the patient benefit from surgery
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TumourTumour
59/F59/F
Backpain + (L) leg Backpain + (L) leg weaknessweakness
L3 mets with neural L3 mets with neural compressioncompression
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Pre opPre op
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Pre opPre op
Post embolisationPost embolisation Pre embolisationPre embolisation
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Intra opIntra op
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Post opPost op
AP viewAP view Lateral viewLateral view
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Mechanical low back painMechanical low back pain
i.e…..Not infective, metabolic, traumatic, i.e…..Not infective, metabolic, traumatic, metastaticmetastatic
?diagnosis?diagnosis SpeculativeSpeculative Degenerative discopathy?Degenerative discopathy? Facet pain?Facet pain? Segmental painSegmental pain
Specific mechanical pathology:Specific mechanical pathology: spondylolytic spondylolisthesisspondylolytic spondylolisthesis Post surgical destabilisationPost surgical destabilisation
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CClinical linical SStandards tandards AAdvisory dvisory GGroup 1994roup 1994
Red flagsRed flags Thoracic painThoracic pain Fever and unexplained weight Fever and unexplained weight
lossloss Bladder or bowel dysfunctionBladder or bowel dysfunction History of carcinomaHistory of carcinoma Ill health or presence of other Ill health or presence of other
medical illnessmedical illness Progressive neurological Progressive neurological
deficitdeficit Disturbed gait, saddle Disturbed gait, saddle
anaesthesiaanaesthesia Age of onset <20 years or Age of onset <20 years or
>55 years>55 years
Yellow flagsYellow flags
A negative attitude that A negative attitude that back pain is harmful or back pain is harmful or potentially severely potentially severely disablingdisabling
Fear avoidance behaviour Fear avoidance behaviour and reduced activity levelsand reduced activity levels
An expectation that passive, An expectation that passive, rather than active, rather than active, treatment will be beneficialtreatment will be beneficial
A tendency to depression, A tendency to depression, low morale, and social low morale, and social withdrawalwithdrawal
Social or financial problemsSocial or financial problems
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Inflammatory - RAInflammatory - RA
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RARA
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Inflammatory - ASInflammatory - AS
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ASAS
Prone to fracturesProne to fractures Often unstable, fractures like chalk Often unstable, fractures like chalk
stickstick Neurological deficit frequentNeurological deficit frequent If originally kyphotic, strapping If originally kyphotic, strapping
spine board may be dangerousspine board may be dangerous
Bamboo spine with fixed kyphosisBamboo spine with fixed kyphosis
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Cervical osteotomy - ASCervical osteotomy - AS
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Inflammatory - ASInflammatory - AS
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TraumaTrauma
Aims of fracture treatmentAims of fracture treatment
anatomical reduction anatomical reduction alignmentalignment
maintain alignmentmaintain alignment rehabilitationrehabilitation
Preserve neurological Preserve neurological functionfunction
Tissue healingTissue healing bone heals with bonebone heals with bone bone healing may malunitebone healing may malunite soft tissue heals with soft tissue heals with
fibrous tissue fibrous tissue fibrous healing remains fibrous healing remains
unstableunstable
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Scoliosis Scoliosis Isola instrumentationIsola instrumentation
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Double rod systems : Double rod systems : KanedaKaneda
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Growing rodGrowing rod Paediatric down sized implantsPaediatric down sized implants Instrumentation without fusionInstrumentation without fusion Periodic lengthening of rodPeriodic lengthening of rod Allows continuing growthAllows continuing growth
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Growing rodGrowing rod
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SummarySummary Keep it simpleKeep it simple Axial pain and Axial pain and
stability problemstability problem Neurological problemNeurological problem Apply the 2 principles Apply the 2 principles
of decompression of of decompression of neural structures and neural structures and stabilisation of bony stabilisation of bony ligamentous ligamentous structuresstructures
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SummarySummary
Presents with brachiagia with or without Presents with brachiagia with or without sensory and or motor symtomssensory and or motor symtoms
Dermatomal distribution identifies levelDermatomal distribution identifies level Consider important differentialsConsider important differentials Favourable natural history favours Favourable natural history favours
conservative treatmentconservative treatment Response to surgery generally goodResponse to surgery generally good
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My experienceMy experience
RetrospectiveRetrospective 47 patients47 patients 72% 72%
satisfactory satisfactory (good/excellent(good/excellent) clinical ) clinical outcomeoutcome
97% fusion 97% fusion raterate
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InvestigationsInvestigations
MRIMRI
OtherOther BloodsBloods
Remember CoagRemember Coag CT myelogramCT myelogram
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Radicular PainRadicular Pain MechanicalMechanical
Biological / ChemicalBiological / Chemical IL-1, IL-6, Sub P, TNF-IL-1, IL-6, Sub P, TNF-αα
InflammationInflammation blood vessel permeabilityblood vessel permeability Oedema of root / DRGOedema of root / DRG
Metabolic disorders with neuropathy e.g. diabetesMetabolic disorders with neuropathy e.g. diabetes Increased susceptibility to radiculopathyIncreased susceptibility to radiculopathy