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ArthritisArthritis
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NON INFLAMMATORY ARTHRITIS
1. Osteoarthritis
2. Neuropathic (Charcot joint)
3. Acute Rheumatic Fever
4. Ochronosis etc.
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OSTEOARTHRITISOSTEOARTHRITIS
DEFINITION
Osteoarthritis (OA) is a non-inflammatory degenerative joint disease characterised by progressive loss of articular cartilage with associated new bone formation and capsular fibrosis.
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OSTEOARTHRITISOSTEOARTHRITIS
CLASSIFICATION
1. Primary or idiopathic 2. Secondary Infection Congenital -Dysplasia - Perthes’ - SUFE Trauma AVN
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OSTEOARTHRITISOSTEOARTHRITIS
SYMPTOMS
1. Pain 2. Swelling3. Stiffness4. Deformity5. Decreased range of motion, crepitus6. Instability7. Loss of function
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X-ray changesX-ray changes
1. Joint space narrowing
2. Subchondral sclerosis
3. Osteophytes
4. Cysts
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OSTEOARTHRITIS
TREATMENT
1. Protection of affected joints from overloading Weight loss Use of walking stick
2. Exercise of supporting muscles around joints to avoid wasting.
3. Supportive measures such as pain relief by analgesics or NSAIDs.
4. Hyaluronic acid injections.5. Glucosamine & chondroitin 6. Surgical treatment
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OSTEOARTHRITIS : Surgical treatmentOSTEOARTHRITIS : Surgical treatment
ArthroscopyArthroscopy OsteotomyOsteotomy ArthrodesisArthrodesis Excision arthroplastyExcision arthroplasty Replacement arthroplastyReplacement arthroplasty
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NON NON INFLAMMATORYINFLAMMATORY ARTHRITIS ARTHRITIS
2. NEUROPATHIC (Charcot joint) JOINT:Joint destruction secondary to loss of sensory innervation of the joint.
CAUSES:Diabetes Tabes dorsalis Syringomyelia (shoulder & elbow) Hansen's Disease / Leprosy Myelomeningocele Congenital insensitivity to pain (Hereditory Sensory Neuropathy)
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NON INFLAMMATORY ARTHRITISNON INFLAMMATORY ARTHRITIS
Clinical:Clinical:Painless, swollen joint Painless, swollen joint mimics infection mimics infection
Radiographs:Radiographs:Advanced destruction Advanced destruction Scattered 'chunks' of bone Scattered 'chunks' of bone Heterotopic ossification Heterotopic ossification
Treatment:Treatment:Bracing & casting for mobility & stability Bracing & casting for mobility & stability
Charcot Joint is a contraindication for total joint Charcot Joint is a contraindication for total joint arthroplasty.arthroplasty.
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ACUTE RHEUMATIC FEVERACUTE RHEUMATIC FEVER
• Formerly most common cause of childhood arthritis.• Sometimes included in inflammatory arthritis.• Arthritis and arthralgia following untreated group A- Beta hemolytic streptococcus infection.• Arthritis is migratory, involves multiple joints.• Diagnosis based on Jones criteria.
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OCHRONOSIS
Degenerative arthritis resulting from alkaptonuria Degenerative arthritis resulting from alkaptonuria (genetic defect of the homogentisic acid oxidase system) (genetic defect of the homogentisic acid oxidase system) Excess homogentisic acid is deposited in the large joints Excess homogentisic acid is deposited in the large joints & polymerises (turns black) & polymerises (turns black) Ochronotic spondylitis presents in the fourth decade Ochronotic spondylitis presents in the fourth decade Black urine Black urine Disc space narrowing & calcification Disc space narrowing & calcification Homogentisic acid is also deposited in other tissues. Homogentisic acid is also deposited in other tissues. The extra-articular manifestations The extra-articular manifestations – ocular & skin pigmentations, ocular & skin pigmentations, – genito-urinary calculi & genito-urinary calculi & – cardiovascular ochronosis, (especially the aortic valve). cardiovascular ochronosis, (especially the aortic valve).
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INFLAMMATORY ARTHRITISINFLAMMATORY ARTHRITIS
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• Rheumatoid arthritisRheumatoid arthritis• SpondyloarthropathiesSpondyloarthropathies
-Undifferentiated-Undifferentiated-Ankylosing spondylitis-Ankylosing spondylitis-Psoriatic arthritis-Psoriatic arthritis-Reactive arthritis (formerly Reiter’s -Reactive arthritis (formerly Reiter’s syndrome)syndrome)-Enteropathic arthritis-Enteropathic arthritis
• SLE, Sjogrens, Scleroderma, Polymyalgia SLE, Sjogrens, Scleroderma, Polymyalgia rheumatica, Vasculitis, Infectious rheumatica, Vasculitis, Infectious (bacterial, viral, other), Undifferentiated (bacterial, viral, other), Undifferentiated connective tissue diseaseconnective tissue disease
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Rheumatoid Arthritis
Definition – symmetric inflammatory joint Definition – symmetric inflammatory joint condition characterized by pannus formation, joint condition characterized by pannus formation, joint erosion, and systemic inflammationerosion, and systemic inflammation
Most common inflammatory arthritis, 1% of the Most common inflammatory arthritis, 1% of the population, 2:1 female to male ratio, peak population, 2:1 female to male ratio, peak incidence between ages 40 to 60incidence between ages 40 to 60
Onset usually insidious over monthsOnset usually insidious over months
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Genetic factors clearly important – HLA “shared Genetic factors clearly important – HLA “shared epitope” is strongest risk factor, but also non-HLA epitope” is strongest risk factor, but also non-HLA genes such as PTPN22, STAT4, TNFAIP3genes such as PTPN22, STAT4, TNFAIP3
Environmental factors – cigarette smoking Environmental factors – cigarette smoking increases both risk of disease and severity of increases both risk of disease and severity of disease, also risk in coal miners (Kaplan disease, also risk in coal miners (Kaplan syndrome)syndrome)
PredispositionPredisposition
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Longitudinal Longitudinal Course of RACourse of RA
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Joints Commonly InvolvedJoints Commonly Involved
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PathogenesisPathogenesis
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History and physical are majority of History and physical are majority of diagnosis diagnosis – Symmetric pain and swelling in small joints of Symmetric pain and swelling in small joints of
hands, wrists, feet, ankles most common, hands, wrists, feet, ankles most common, followed by knees, elbows, shouldersfollowed by knees, elbows, shoulders
– Morning stiffness – better with activityMorning stiffness – better with activity– Constitutional symptoms – fatigue, even Constitutional symptoms – fatigue, even
weight loss are common, but fever is VERY weight loss are common, but fever is VERY RARERARE
– Steady, progressive, additive onset is by far Steady, progressive, additive onset is by far most common presentationmost common presentation
DiagnosisDiagnosis
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Patterns of OnsetPatterns of Onset
Insidious Insidious 55%-65% 55%-65% Joint stiffness, swelling,Joint stiffness, swelling,pain, fatiguepain, fatigue
AcuteAcute 8%-15% 8%-15% Fever, weight loss, fatigue, Fever, weight loss, fatigue, joint abnormalities present joint abnormalities present but often not prominentbut often not prominent
IntermediateIntermediate 15%-20% 15%-20% Systemic complaints moreSystemic complaints morenoticeable than insidious onsetnoticeable than insidious onset
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Extra-articular featuresExtra-articular features
Rheumatoid nodulesRheumatoid nodules
Pleural effusionsPleural effusions
Atherosclerosis (new, but probably Atherosclerosis (new, but probably testable)testable)
ScleritisScleritis
Rheumatoid vasculitis (rare)Rheumatoid vasculitis (rare)
Felty’s syndrome (neutropenia, Felty’s syndrome (neutropenia, splenomegaly, recurrent infection)splenomegaly, recurrent infection)
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High ESR or CRP common but not required
Rheumatoid factor positive in about 50%– RF usually indicates more severe disease, greater
likelihood of extra-articular manifestations
Anti-CCP antibodies - relatively new (but very clinically useful and testable!!)– Found in about 50% of patients without much overlap
with rheumatoid factor– Highly sensitive – positive test almost always indicates
disease (>90% specificity for RA, even in mixed autoimmune cohorts)
LaboratoryLaboratory
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Classical findings of inflammatory arthritis:– Periarticular joint erosions– Periarticular osteopenia– Symmetric joint space narrowing
Note that each of these is the opposite of OA!! – (erosions instead of spurs, osteopenia instead
of sclerosis, and symmetric instead of asymmetric joint narrowing)
X-ray
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Joint-space narrowing Joint-space narrowing and erosion are seen in and erosion are seen in up to two thirds of up to two thirds of patients within the first 2 patients within the first 2 to 5 years of diseaseto 5 years of disease
Early Radiographic Progression
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Rheumatoid Rheumatoid arthritis arthritis
erosions on erosions on X-rayX-ray
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RHEUM. ARTHRITIS - Late changesRHEUM. ARTHRITIS - Late changes
ADVANCED JOINT CHANGES:ADVANCED JOINT CHANGES:
Joint destructionJoint destruction PainPain DeformityDeformity InstabilityInstability
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Early treatment with a disease modifying drug is Early treatment with a disease modifying drug is standard of carestandard of care
Non-disease modifyingNon-disease modifying– NSAIDsNSAIDs– PrednisonePrednisone
Disease modifyingDisease modifying– Methotrexate – most common first line, usually around Methotrexate – most common first line, usually around
15-20mg/week with daily folate 1mg/day15-20mg/week with daily folate 1mg/day– Sulfasalazine, leflunomide also effectiveSulfasalazine, leflunomide also effective– Biological agents such as TNF-alpha blockers, Biological agents such as TNF-alpha blockers,
abatacept, rituximab, and tocilizumab are all second or abatacept, rituximab, and tocilizumab are all second or third linethird line
TreatmentTreatment
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Goal of treatment is clinical remission if Goal of treatment is clinical remission if possiblepossibleControl of disease prevents bone erosions Control of disease prevents bone erosions and subsequent deformity and loss of and subsequent deformity and loss of functionfunctionAll disease modifying drugs are All disease modifying drugs are immunosuppressive, non-biologics have immunosuppressive, non-biologics have risk of GI intolerance and hair loss, TNF risk of GI intolerance and hair loss, TNF blockers are associated with re-activation of blockers are associated with re-activation of tuberculosis and rarely an MS-like disease, tuberculosis and rarely an MS-like disease, other biologics are not currently in wide useother biologics are not currently in wide use
TreatmentTreatment
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SYSTEMIC LUPUS ERYTHEMATOSUS
Definition-An inflammatory multisystem disease of unknown etiology
with protean clinical and laboratory manifestations and avariable course and prognosis.
-Immunologic aberrations give rise to excessive autoantibody
production, some of which cause cytotoxic damage, whileothers participate in immune complex formation resulting inimmune inflammation.•Women more affected ( African Americans).•SLE not destructive as RA.
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Clinical:Clinical:Joint involvement is the most common Joint involvement is the most common feature (75%) PIP, MCP, Carpus, knees feature (75%) PIP, MCP, Carpus, knees etc.etc.Fever, anorexia, weight loss, malaise Fever, anorexia, weight loss, malaise Skin rashes (butterfly malar rash) Skin rashes (butterfly malar rash) Raynaud's phenomenon Raynaud's phenomenon Splenomegaly Splenomegaly Nephritis, pericarditis, pleurisy Nephritis, pericarditis, pleurisy
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Systemic lupus erythematosus classification criteria
(SOAP BRAIN MD)1. SSerositis:
(a) pleuritis, or (b) pericarditis
2. OOral ulcers3. AArthritis4. PPhotosensitivity
10. MMalar rash11. DDiscoid rash
5. B Blood/Hematologic disorder: (a) hemolytic anemia or(b) leukopenia of < 4.0 x 109 (c) lymphopenia of < 1.5 x 109 (d) thrombocytopenia < 100 X
109
6. RRenal disorder: (a) proteinuria > 0.5 gm/24 h
or 3+ dipstick or(b) cellular casts
7. AAntinuclear antibody (positive ANA) 8. IImmunologic disorders:
(a) raised anti-native DNA antibody binding or(b) anti-Sm antibody or (c) positive anti-phospholipid antibody work-up
9. NNeurological disorder: (a) seizures or (b) psychosis
". ..A person shall be said to have SLE if four or more of the 11 criteria are present, serially or simultaneously, during any interval of observation."
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Laboratory:Laboratory:Anaemia, Leucopenia Anaemia, Leucopenia ESR elevatedESR elevatedANA positive (RF & HLA-DR3 may be +ve) ANA positive (RF & HLA-DR3 may be +ve)
Treatment:Treatment:NSAID, Hydroxychloroquine, CyclphosphomideNSAID, Hydroxychloroquine, CyclphosphomideCorticosteroids for severe disease Corticosteroids for severe disease Sunblock creams for malar rash.Sunblock creams for malar rash.
Complications:Complications:AVN hip (? from steroids) AVN hip (? from steroids)
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JUVENILE RHEUMATOID ARTHRITISJUVENILE RHEUMATOID ARTHRITIS
Persistent noninfectious arthritis lasting 6 weeks to 3 months after other causes have been ruled out.Juvenile chronic arthritis (JCA) is gradually being used.
Diagnostic CriteriaAge under 16 at onset Rash, RFIridocyclitis CSpine involvement Pericarditis, Tenosynovitis Fever, Morning stiffness
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Systemic onset (Still's disease)Age: usually under 5years but can be any age, Sex: <5yr female = male; >5yr female > male Fever (high with spikes up to 40°C daily) plus one of the followingMaculopapular rash, Iridocyclitis, RhF +ve, Cervical spine involvement Pericarditis, Generalised lymphadenopathy, Hepatomegaly, Splenomegaly Sites: knees, wrists, ankle, feet
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Polyarticular onsetSeronegative (RhFactor -ve), Seronegative (RhFactor -ve), Age: Age: any, even before age 1year!, Sex: any, even before age 1year!, Sex: female > male female > male 5 or more joints involved in the first 3 5 or more joints involved in the first 3 months , Sites: knees (60%), wrists, months , Sites: knees (60%), wrists, handshandsRhFactor +ve, RhFactor +ve, Older children (9-10 Older children (9-10 years) with persistent activity and years) with persistent activity and rapid joint destruction affecting mainly rapid joint destruction affecting mainly the hands and feet.the hands and feet.
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Pauciarticular (most common)• 4 or less joints involved in the first 3 4 or less joints involved in the first 3
months months • Type IType I, , • Younger onset <6yr, with Younger onset <6yr, with
females mainly affected. ANA +ve. Danger females mainly affected. ANA +ve. Danger because because of development of iridocyclitis. of development of iridocyclitis. Presence of ANA related to eye Presence of ANA related to eye involvement.involvement.
• Type IIType II• Older onset 9yr+, with males Older onset 9yr+, with males
mainly affected. Association with HLA-mainly affected. Association with HLA-B27.B27.
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JUVENILE RHEUM. ARTHRITISJUVENILE RHEUM. ARTHRITIS
Medical ManagementAim: to suppress activity and therefore prevent joint deformity
Multidisciplinary approach .
PT to help prevent joint contractures.
Hydrotherapy affective.
OT for splints and orthoses
Surgical Management when necessary
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Pathology
Inflammation & erosive destruction of: Inflammation & erosive destruction of: – Diathrodial joints = sacroiliac, vertebral facet, Diathrodial joints = sacroiliac, vertebral facet,
costovertebralcostovertebral– Fibro-osseous junctions - intervertebral discs, Fibro-osseous junctions - intervertebral discs,
sacroiliac ligaments, symphysis pubis sacroiliac ligaments, symphysis pubis 3 Stages: 3 Stages: – InflammationInflammation - round cell infiltration, granulation - round cell infiltration, granulation
tissue, joint erosion tissue, joint erosion – FibrosisFibrosis - replacement of granulation tissue with - replacement of granulation tissue with
fibrous tissue fibrous tissue – OssificationOssification - of fibrous tissue (e.g. - of fibrous tissue (e.g.
syndesmophytes) syndesmophytes)
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Radiology
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Clinical:Clinical:Spinal stiffness (progressive spinal flexion deformity) Spinal stiffness (progressive spinal flexion deformity) Wall Test - patient asked to stand with back against wall; should Wall Test - patient asked to stand with back against wall; should normally be able to touch occiput, scapulae, buttocks & heels to normally be able to touch occiput, scapulae, buttocks & heels to wall. wall. Chest expansion < 7cm Chest expansion < 7cm Hip involvement with FFD Hip involvement with FFD Achilles tendon insertion pain Achilles tendon insertion pain Difficult cervical spine fractures with epidural haemorhage Difficult cervical spine fractures with epidural haemorhage
Extraskeletal:Extraskeletal:Prostatitis Prostatitis Conjunctivitis & uveitis in 20% Conjunctivitis & uveitis in 20% Carditis, aortic valve disease Carditis, aortic valve disease Pulmonary fibrosis Pulmonary fibrosis
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Squaring of vertebral bodies
Syndesmophytes
Bamboo spine
Erosive arthritis with progressive ankylosis
RadiologyRadiology
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Laboratory:High ESR High ESR HLA-B27 in 90% HLA-B27 in 90% RF negative RF negative
Management:Postural management Postural management NSAIDs NSAIDs Operations to correct deformity & restore mobility Operations to correct deformity & restore mobility – Lumbar / cervical spine osteotomies Lumbar / cervical spine osteotomies – THR THR
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REITER’S SYNDROME
Hans Reiter, 1916 Hans Reiter, 1916
Triad = Urethritis + Arthritis + Conjunctivitis
Causative organisms: Causative organisms:
– Chlamydia trachomatis, shigella, Chlamydia trachomatis, shigella, salmonella, campylobacter, Yersinia salmonella, campylobacter, Yersinia
– Lymphogranuloma venereum Lymphogranuloma venereum
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Radiology:erosive arthropathy similar to AS
Laboratory:HLA-B27 in 80% ESR high in acute phase organism may be isolated from urethral fluids or faeces
Treatment:Supportive Tetracycline for persistent urethral infection
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GOUT
Disorder of purine metabolism characterised by hyperuricaemia & recurrent attacks of acute synovitis
M:F = 20:1
2 Types: – Primary (95%): inherited disorder with
overproduction or under excretion of uric acid – Secondary (5%): myeloproliferative disorders,
renal disease Only a small number of people with hyperuricaemia develop gout.
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Humans lack the enzyme uricase which is involved in elimination of excess nucleic acid purines & nitrogenous waste products thru production and excretion of alantoic acid; hence in humans, uric acid is end product of purines degradation
Deposition of MSU (monosodium urate) crystals in synovial & periarticular tissue
History:– Galen (129-199 AD), an ex-gladiatorial surgeon in the Pergamon
arena in Asia Minor who moved to Rome, described gout as a discharge of the four humors of the body in unbalanced amounts into the joints (hence gout = gutta, a drop).
– The first radiological description of gout was made by Huber in 1896, a few months after Röentgen described the x-ray.
PathologyPathology
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ClinicalClinical
The joints most commonly affected by gout are: Forefoot – podagara: - classic presentation of acute attack of first MTP
joint Elbows and hands – unlike RA hand and wrist joints will have preserved joint
spaces and normal mineralization The large joints (hips, knees, ankles and shoulders) are infrequently involved Spine very rarely affected.
Nephrolithiasis is major extraarticular manifestation; - only small % of pts w/ gout get tophi, but many get renal stones; - pure uric acid stones are found in 80%, & uric acid is probably nidus for Ca-Phos & oxalate calculi in remainder; - in 1/2, sx from renal stones actually precede arthritis
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Laboratory
Hyperuricemia – biochemical hallmark of gout, but not by itself
diagnostic for gout Leukocytosis Increased ESR Synovial Fluid – leukocyte counts = septic arthritis – viscosity is < septic or inflammatory arthritis
MSU needle - like intracellular & extracellular crystals Negatively birefringent crystals under polarized light microscopy
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Treatment
Acute Attacks:Indomethacin 75mg stat. then 25mg BD Colchicine intravenous - 0.6 mg 2 hours until pain decreases
Chronic:Allopurinol for hyperuricaemia & tophi Colchicine for prophylaxis
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PSEUDOGOUTCHONDROCALCINOSISCHONDROCALCINOSIS
Acute arthritis caused by Calcium pyrophosphate Acute arthritis caused by Calcium pyrophosphate dihydrate (CPPD) crystal-induced inflammation dihydrate (CPPD) crystal-induced inflammation May perfectly mimic gout during acute flare May perfectly mimic gout during acute flare Attacks occurring before age 50 are uncommon Attacks occurring before age 50 are uncommon
Clinical:Clinical: Most often affects the knee and the wrists Most often affects the knee and the wrists
Radiology:Radiology: CCalcificationalcification densities in hyaline or fibrocartilage, densities in hyaline or fibrocartilage, which are found in knee menisci, acetabular labrum, which are found in knee menisci, acetabular labrum, & TFCC& TFCC
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LaboratoryLaboratory
Fluid analysis: – CPPD crystals are visualized under compensated polarized light
microscopy – crystals may be more difficult to detect than MSU crystals
because of their smaller size, more intralysosomal location, & less brilliant colors
– CPPD crystals show weak positive birefringency and have squared or rhomboidal shaped ends
– alizarin red stain, can confirm that these clumps are masses of calcium crystals
Treatment: aspiration of the involved joint and steroid injection, once diagnosis of infection has been excluded, will usually control symptoms