7 disorders of the spine lecture - trinity college, dublin · infection (discitis or vertebral...
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RheumatologyFinal Med revision programme 2007-8RheumatologyFinal Med revision programme 2007-8
Dr. David KaneConsultant Rheumatologist
AMNCH & TCD
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Disorders of the SpineDisorders of the Spine
Dr. David KaneRheumatologyAMNCH & TCD
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General Principles (1)General Principles (1)90-95% of neck and back pain is benign / mechanical in nature
Pain due to overuse or strain of normal structures (muscle, tendon, fascia, ligament, nerve)Intervertebral disc prolapse (radiculopathy), usually self limiting but may become chronicDegenerative Disc DiseasePrecise diagnosis usually impossible and unnecessary
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General Principles (2)General Principles (2)Objective of history / examination is to differentiate:
benign cases (requiring physio/ conservative management)
sinister cases (requiring immediate investigation)
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Sinister back painSinister back pain
Remaining 5-10% of casesVertebral fracture (osteoporotic or pathological)Malignancy (myeloma, spinal secondaries)Infection (discitis or vertebral osteomyelitis)Inflammation (spondyloarthropathy)Referred pain from aortic aneurysm, pancreatitis, gastric ulcer etc
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Back Pain : History (1)Back Pain : History (1)Pain
OnsetCharacter (boring, shooting, constant, intermittent)Radiation (up spine, down leg; ?below knee – sciatica)Precipitating / relieving factorsChange with coughing, Valsalva (radiculopathy)Nocturnal / sleep disturbance
Morning StiffnessAssociated neurological symptoms
Paraesthesiae / numbnessSphincter disturbance
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Back Pain : History (2)Back Pain : History (2)Past Medical History
Malignancy, Skin rashesImmunosuppression, HIV, IVDAOsteoporosis risk factors
Corticosteroid use, malabsorption, alcoholism, hypogonadism
Family HistorySpondyloarthropathy, Psoriasis, Cröhn’s / Ulcerative Colitis
Social HistorySmoking, alcohol useEmployment history
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“Red Flags”“Red Flags”Age <25 or >55 yearsInsidious onset, progressively worsening painAcute onset severe pain without antecedent traumaPain unaffected by activity / postureNocturnal pain disturbing or waking from sleepPain in the thoracic spineProgressive or bilateral neurological symptoms
Saddle anaesthesia, bladder/ bowel sphincter disturbance
Systemic symptomsFever, weight loss, general malaise
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“Yellow Flags”“Yellow Flags”
Adversarial medicolegal proceedingsLow job satisfactionPsychosocial problems / depressionPersonal problems – alcohol, marital, financeDisproportionate illness behaviourTotal work loss (due to low back pain) >12/12
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Causes of Spinal PainCauses of Spinal Pain“Mechanical“InflammatoryMalignantInfectionBone Disorders
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Non-spinal causes of Spinal PainNon-spinal causes of Spinal PainNeck Pain
Disorders of the ShoulderVisceral pain: Ischaemic Heart disease, oesophageal spasm, Pleural inflammation, Dissecting aneurysmDiaphragmattic: Subphrenic abcess, Gall BladderSystemic: Meningitis
Low Back PainDisorders of the HipVisceral Pain: Pancreatitis, Colonic Carcinoma, Renal Calculi, Endometriosis, Ovarian Carcinoma, Abdominal aortic aneurysm
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Mechanical neck and back painMechanical neck and back pain
Acute onset, associated with physical task or traumaRelieved by restWorse with movement / exerciseMorning stiffness < 30 minutes
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Mechanical neck and back painMechanical neck and back pain
Trauma (includes Whiplash Injury)Degenerative disease
SpondylosisDisc herniationSpondylolisthesisSpinal Stenosis
Post Surgical back painMechanical Pain ….soft tissue strain
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Osteoarthritis of cervical spineOsteoarthritis of cervical spine
Prevalence increases with agePrevalence increases with age
C5,C6,C7 most affectedC5,C6,C7 most affected
OsteophyteOsteophyte and discand discspace narrowing space narrowing
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Osteoarthritis of Lumbar spineOsteoarthritis of Lumbar spine
RadiologyRadiology HistologyHistology
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Nerve root pain (Radiculopathy)Nerve root pain (Radiculopathy)Acute onset after weight bearing activityUnilateral “shooting” pain radiating down to below knee; back pain less intensePain exacerbated coughing, sneezing, ValsalvaLimited flexion, but preserved rotation, extensionNeurological abnormalities (usually one root only)
L4: pain anteromedial thigh, ↓sensation over patellaL5: ↓sensation medial edge/ dorsum foot, can’t heel walkS1: ↓sensation lateral border/ sole foot, can’t walk on tiptoe
Lost tendon reflexes
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Spinal StenosisSpinal StenosisNeurological compromise caused by degenerative narrowing of the lumbar spinal canalPseudoclaudication
Pain / paraesthesiae in buttock / leg precipitated by exercise and relieved by restWithout evidence of peripheral vascular diseaseUsually relieved by spinal flexion, exacerbated by extension
Signs may resemble sciaticaObjective neurological signs usually absentBladder / bowel compromise rare
But absolute indication for surgery
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Role of imagingRole of imaging
Plain radiograph of variable valueIf radiculopathy or spinal stenosis present proceed to MRI
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Non-pharmacological therapy:
EducationPhysiotherapy:
Exercise: Mobilisation not restactive/passive movementsHydrotherapyManipulationLocal treatment: heat /ultrasound / TENSExercise
Occupational Therapy
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Analgesic therapy – neck and back pain
paracetomolcodeineCombinations
eg:-paracetomol + codeineNSAIDsLow dose diazepam Stronger opiatesAmitryptiline, Gabapentin. Pregabalin
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Relative risk of G-I haemorrhage with NSAIDs
Current NSAID ........5.9Single NSAID ........4.9Switcher ........11Multiple ........11
Garcia-Rodriguez et al 1994
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Minimisation of NSAID side-effects
Avoid in high risk patientselderlyfemaleHx. of P.U.D. / renal impairmentConcomitant aspirin, warfarin, SSRI
Use of gastroprotective agentsmisoprostilproton pump blocker
Cox-2 selective agents
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Indications for SurgeryIndications for SurgeryAcute onset of spinal cord compression or cauda equina syndrome is a surgical emergency
3 general indications to consider surgeryNerve Root compressionSpinal cord compressionInstability
Fusion may be indicatedRequires careful pre- assessment
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Inflammatory spinal painInflammatory spinal painYoung men (onset < 40)Insidious relapsing/ remitting onset, sometimes with prodromal illnessPresent for at least 3 monthsNocturnal pain; marked morning stiffnessNeck stiffness, particularly extensionRelated symptoms:
Uveitis / iritisPsoriasis, Keratoderma blenorrhagica, circinatebalanitisCröhn’s / Ulcerative colitisEnthesopathies
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Progressive spinal deformity in Ankylosing SpondylitisProgressive spinal deformity in Ankylosing Spondylitis
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Clinical features – ankylosing spondylitisClinical features – ankylosing spondylitis
Arthritis of axial skeleton sacroileitis spine pubic symphesis
Arthritis of limb girdle jointships shoulders
Inflammation of enthesesAchilles tendon olecranon plantar fascia
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Is HLA B27 the only factor in Ankylosing SpondylitisIs HLA B27 the only factor in Ankylosing Spondylitis
Why if only 9% of UK population haveHLA B27 do only 0.05% have Ankylosing
Spondylitis?
Transgenic rats only get disease when grown in non sterile environment
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Treatment for AnkylosingSpondylitisTreatment for AnkylosingSpondylitis
NSAIDSAnalgesicsIntensive physiotherapy/ hydrotherapyRadiotherapy was used? role of bisphosphonatesSurgery for fracturesAnti-TNF therapy
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Hydrotherapy for EMSHydrotherapy for EMS
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Malignant spinal painMalignant spinal pain
Metastatic DiseaseMultiple MyelomaPrimary tumour or bone, spinal cord or nerve root
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Malignant spinal painMalignant spinal pain
Older patientsSevere unremitting pain with no relation to posture or activityNocturnal painWeight loss/ constitutional symptoms± Cord Compression:
Sensory levelSphincter involvement
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InfectionInfection
OsteomyelitisParavertebral abcessDisciitis
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Bone DisordersBone Disorders
OsteoporosisPaget’s Disease
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Osteoporosis / vertebral fractureOsteoporosis / vertebral fracture
Only ~30-50% of osteoporotic vertebral fractures are symptomaticSymptomatic fractures:
Sudden onset, severe, well-localised dorsal/ lumbar pain, often after effort/ traumaPatient may even describe feeling a “crack”Settles gradually over 6-8/52
Asymptomatic fractures:Gradually increasing kyphosis with loss of height
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Normal boneNormal bone
http://www.schoolscience.co.uk/content/
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Normal boneNormal bone
http://www.teaching.anhb.uwa.edu.au/mb140/
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Normal ElderlyNormal Elderly
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50 58 76 84
Normal Osteopaenia Osteoporosis
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Osteoporosis
‘…a systemic skeletal disease characterised by low bone mass and microarchitectural deterioration of bone tissue, with consequent increase in bone fragility and susceptibility to fracture’
Common sites of fracture1
Spine
Neck of femur
Wrist
Definition1
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PathophysiologyPathophysiology of Osteoporosisof Osteoporosis
Osteoid Mineralization
Bone
RestingActivationResorption
Bone Osteoclasts
Bone Remodeling
ReversalFormation
BoneBoneOsteoblasts
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1.000.820.83Survival
5%2-10%100%Hospitalisation
35008,0005000Cases / yr
13%2%
28%6%
14%3%
Lifetime Risk- women- men
WristSpineHip
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Osteoporosis and Vertebral Fracture
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Only 33% of vertebral fracturesare clinically diagnosed5
100%
50%
33%
8%2%
fractures identified by X-ray
symptomatic (back pain)
clinically diagnosed
admitted to hospitalrequiring long-term care
Vertebral morphometry now possible with DXA
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Osteoporosis: causes
• Secondary– Glucocorticoid excess– Premature Ovarian Failure– Testicular Insufficiency– Thyroid Hormone excess– Diabetes Mellitus– Immobilization– Neoplasia-producing osteoclast activating factors,– Chronic inflammatory disorders– Primary biliary cirrhosis– Malnutrition– Chronic calcium or protein deficiency– chronic heparin therapy– Ethanol………….+cancer Rx……….+transplant
• Primary (ageing, post menopausal)
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Step five:Arrange DXA7
Only undertake DXA if the results will influence management
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Lifestyle measures7
• Smoking cessation• Avoid excessive alcohol intake• Regular weight-bearing exercise• Avoid immobility• Avoid excessive dieting and exercise resulting in amenorrhoea• Maintain adequate reference nutrient intakes of calcium/vitamin
D
Calcium males 11-18 years 1,000 mg dailyfemales 11-18 years 800 mg dailyadults 19 + years 700 mg daily
Vitamin D 800 IU daily
The RCP makes no recommendations concerning population-based strategies2
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Clinical Effectiveness: Cyrus Cooper
0.490.810.55Alendronate
0.850.60Strontium
0.650.35rPTH
0.920.69Raloxifene
1.14 *0.55Ibandronate
0.610.670.63Risedronate
HipNon-vertebralVertebral
* One Trial only
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6
4
2
0
Rel
ativ
e ris
kR
elat
ive
risk
<2.5 mg/day<2.5 mg/day 2.52.5––7.5 mg/day7.5 mg/day > 7.5 mg/day> 7.5 mg/day
HipHipSpineSpine
Daily Oral Glucocorticosteroid DoseDaily Oral Glucocorticosteroid Dose
van Staa et al, J. Bone and Mineral Res. 2000;15(6);993-1000
Oral Glucocorticosteroid Dose Strongly Correlates to Fracture Risk
Oral Glucocorticosteroid Dose Strongly Oral Glucocorticosteroid Dose Strongly Correlates to Fracture RiskCorrelates to Fracture Risk
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RCP/ Bone & Tooth Soc/ NOS 02
• If commitment or exposure to steroids >/ = 3 months, general measures for all
• If age>65 or prior fragility fracture, commence bisphosphonate or other agent
• If age<65 and no fracture, measure BMD and if T-score </= -1.5 commence bisphosphonate or other agent
• Any dose of oral steroid, inhaled steroid > 1mg a day
• Assumes DXA quickly available
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Paget’s DiseasePaget’s Disease
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Paget‘s Disease: FeaturesPaget‘s Disease: Features
• Radiological: Plain radiographs, scintigraphs
• Laboratory analysis: e.g. total SAP
• General: Under-diagnosed, under-treated and sub-optimally managed
• Early diagnosis may yield better treatment outcome and prevention of complications
Diagnosis
• Asymptomatic stage: Silent but progressing
• Symptomatic stage:
• 5%-10% of all patients are symptomatic
• Most frequent symptoms and complications: Pain, bone deformities, osteoarthritis, fractures, nerve compression
Clinical presentation
• Increased bone turnover triggered by osteoclast hyperactivity
• SAP normalization needed to achieve longer remission periodPathophysiology