Rheumatology shorts Flashcards

1
Q

Hand exam
-Salient
-General inspection
-Look
-Feel and Move
-Function
-Other

A

Salient:
- diagnosis
- disease activity
- function
- extra-articular features
- treatment

GENERAL INSPECTION:
-cushingoid, weight, iritis, scleritis etc
-other joint disease
-gait aids

LOOK:
-Dorsal aspect:
. Wrist- skin (scars, redness, atrophy, rash, scleroderma with sclerodactyly), swelling (distribution), deformity, muscle wasting.
. MCP- deformity (ulnar deviation, volar subluxation)
. PIP/DIP- deformity (swan neck, boutenniere, Z-thumb, sausage-saged)
. Nails (psoriatic changes- pitting, ridging, onycholysis, hyperkeratosis, discoloration, splinter haemorrhage/periungal infarct = vasculitis, clubbing).
. Psoriatic rash (extensor surface joints, scalp and peri-umbilicus, dactylitis, pitting or onycholysis)
-Palmar aspect:
. Skin- scars, palmar erythema, pale palmar creases, discolouration
. Small muscle wasting

FEEL and MOVE PASSIVELY:
-Wrist (synovitis, effusions, range of movement, crepitus, ulnar styloid tenderness)
-MCP (subluxation)
-PIP/DIP (palmar tendon crepitus, subluxation / deformity)
-Carpal tunnel syndrome tests
. ?Active synovitis (boggy tenderness or effusions)
. Restricted movement

HAND FUNCTION:
-Grip strength
-Opposition strength
-Key grip
-Practical ability
-Peripheral nerves (intact on brief screen)

OTHER:
-Other joints
. Elbows (subcutaneous nodules, psoriatic rash)
. Feet (enthesitis with psoriasis)
. Cervical spine (decreased ROM)
. Axial involvement (schober’s, occiput to wall, sacroilitis)
-Signs of systemic disease or steroid complications (cushingoid appearance, bruising, skin atrophy, cataracts, proximal myopathy ?injection marks to suggest biological use).

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2
Q

Rheumatoid arthritis
-stiffness >30min mane
-ulnar deviation
-wasting
-swan neck / boutennaires / z-thumb deformity, non-correctible
-subluxation of MCP / ulnar
-Extra-articular features: CAR PIPES
-XR: LOSED

A

Extra-articular features:
Cervical myelopathy OR peripheral nerve entrapment (atlantoaxial joint)
Anaemia, Vasculitis, AR
RA nodules
Pericarditis, parotitis, mouth ulcers
ILD/interstitial nephritis
Pleural effusion
Episcleritis
Splenomegaly

XR RA (LOSED)
Loss of joint space
Osteopaenia (juxta-articular)
Soft tisssue swelling
Erosions (marginal/bony erosions)
Deformities

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3
Q

Osteoarthritis:
PIP, DIP and 1st CMC
Herbedens (DIP) and Bouchards (PIP)
Knees, hips

OA: Hand XR LOSS
(also haemochromatosis = 2nd and 3rd MCP)

A

OA (LOSS)
Loss of joint space
Osteophyte
Subchondral cyst
Subchondral sclerosis

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4
Q

Scleroderma exam

A

Complete- vital signs, resp/cardiac exam
. Limited- face + peripheral skin thickening, PAH.
. Diffuse- diffuse skin involvement, ILD and renal.

General inspection: scleroderma facies, portal O2 (IWOB), pallor.
Hand exam (contraction deformity fingers with- )
- Sclerodactyly extending to ?mid-forearm
- Calcinosis
- Raynauds, finger pulp atrophy (ulceration, cold)
- Telangiectasia

FUNCTION
-grip strength
-pincer grip
-opposition grip
-button/jar lid

OTHER
-Peripheries: calcification elbow, extensor surface arms
-Joints: shoulders, elbows, knees, ankles
-Face: decreased mouth opening, unable to close eyes, telangiectasia, dry eyes/mouth, alopecia
-Chest: skin thickening, decreased chest expansion, fine crackles, pulmonary HTN (RV heave, loud P2)
-Abdo: hepatomegaly (primary biliary cirrhosis)
-Legs: skin tethering and ulceration

Complications of scleroderma-
ARMS-
-HTN, fistula secondary to ESKD (renal)
-proximal myopathy

CHEST-
-pulmonary HTN
-pulmonary fibrosis
-cor pulmonale
-PEG/stoma suggesting esophageal dysmotility

Summary: limited diffuse scleroderma complicated by ILD, pulmonary HTN, HTN complications.

DDx: mixed connective tissue disease, GVHD, nephrogenic systemic fibrosis

Ix:
Diffuse
. Scl-70 = DcSSc
. Topoisomerase-1 ab= ILD, renal, serositis
. RNA polymerase III (severe skin, GAVE, renal crisis)
Limited-
. anti-centromere = LcSSc (PAH, CREST)
anti-U1RNP = MCTD
anti-PM/Scl = myositis overlap

Complications:
. Renal (UEC, urine)
. Pulmonary HTN (PFT, ECG, TTE)
. ILD (PFTs, HRCT)
. GORD, dysmotility = GI Ix (gastroscopy, esophageal manometry)

Note GAVE= gastric natural vascular ectasia (IDA, anaemia, GI bleeding).

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5
Q

Back exam
-Look
-Feel
-Function
-Activity
-Extra-articular manifestations

A

LOOK:
-undress to underpants and stand up
-deformity (back and side, kyphosis, loss of lumbar lordosis)
-gait aids

FEEL:
-tenderness (spinous processes and facet joints)
-sacroiliac joints (pain = active disease)

MOVE:
-lumbar spine (modified schober’s test was abnormal <5cm flexion)
-extension/lateral flexion were abnormal <10cm
-thoracic spine (decreased ROM rotation, reduced chest expansion)
-cervical spine flexion (decreased ROM 45 degrees), extension, lateral bending (45 degrees) and rotation.
-Occiput to wall test (normal/abnormal)

ACTIVITY:
-spring anterior superior iliac spine (active sacroiliac disease).
-achille’s tendinitis (heel) and plantar fascitis.
-knees, hips and shoulders.

EXTRA-ARTICULAR MANIFESTATIONS:
-Lung: apical fibrosis
-Heart: AR, MVP, Conduction deficits, ICD
-Eyes: uveitis
-Gastrointestinal system: IBD, amyloid (hepatosplenomegaly)
-Psoriasis (scalp) OR reactive arthritis
-Hand/knee/hip: small joint arthralgia (psoriasis)
-Cauda equina compression (back, buttock and leg pain + sensory loss saddle + lower limb weakness + loss of sphincter control)

Complications of immunosuppression-
-steroid complications (cushingoid appearance, bruising, skin atrophy, cataracts or proximal myopathy)
-injection marks secondary to biologics

OTHER INVESTIGATIONS:
-MRI
-Serology: HLA-B27 status
-Inflammatory markers: CRP, ESR, FBE (anaemia), albumin (chronic inflammation)

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6
Q

DDx deforming polyarthropathy (6)

A

RA
Seronegative arthropathies (psoriatic)
Polyarticular gout (look for tophi) or pseudogout
Primary generalised osteoarthritis (DIP/PIPJ involvement is common)
SLE
Jaccouds arthritis

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7
Q

DDx seronegative spondyloarthropathies (4)

A

Ankylosing spondylitis
Psoriatic spondylitis
Reactive arthritis (reiter’s syndrome)
Enteropathic arthritis

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8
Q

DDx DIPJ spared (3)

A

RA, SLE, Jaccouds arthropathy

Note on Jaccouds arthropathy: ligament laxity, chronic non-erosive process in the context of different arthropathy (including SLE, psoriasis, IBD and malignancy).

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9
Q

DDx DIPJ involved

A

Nodal osteoarthritis
Gout
Psoriatic arthritis

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10
Q

Sausage shaped + telescoping

A

Psoriatic arthritis
Reactive arthritis

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11
Q

SLE:
-malar, discoid rash with livedo reticularis
-cushingoid features
-hand rash sparing knuckles, symmetrical minimally erosive arthritis, jaccoud arthropathy
-nails: nailfold infarct, dilated capillary loops
-head/neck: alopecia, telangiectasia, mouth ulcers
-eye: scleritis, episcleritis or anaemia
-abdomen: hepatosplenomegaly
-BP: HTN and peripheral oedema ?renal disease

Hand XR: NOSD

Extra-articular manifestations
RASH ON MAIDS (young woman with rash)
-also, SLE classification criteria

A

Hand XR: NOSD
Non-erosive
Osteopenia / osteoporosis (juxta-articular) +/- osteonecrosis
Soft tissue swelling
Deformity

SLE extra articular manifestations:
Renal (proteinuria, active urine sediment)
Arthritis (>2 joints)
Serositis (pleurisy or pericarditis) OR pulmonary fibrosis
Hematologic (pancytopenia, hepatosplenomegaly)

Oral or nasopharyngeal ulcers
Neurologic (seizures, psychosis)

Malar rash
ANA positive
Immunologic (dsDNA, Smith, false + RPR, LAC, ACLA)
Discoid lupus
Sun-sensitive rash

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12
Q

Gout: Extra-articular manifestations (3)
DDK

A

Diabetes (and metabolic syndrome with obesity, insulin use)
Diuretics (thiazide, fluid overload)
Kidney disease (high urate level)

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13
Q

Psoriatic arthritis
Clinical features
SPAR

A

. Stiffness (inactivity) / Swelling / Sausage (dactylitis)

. Pain in joints (small joint arthropathy)

. Axial spine (seronegative spondyloarthritis)

. Rash (scalp, hairline or umbilicus psoriatic plaques).

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14
Q

Gout: Hand XR
TOES

Mx: urate lowering (allopurinol or febuxostat), diet and lifestyle (weight loss, avoid alcohol)

A

TOES
Soft tissue swelling
Periarticular EROSIONS (“punched-out” (rat-bitten) overhanging edges
SclerOTic margins
Tophi (calcified in renal disease)

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15
Q

Psoriatic arthritis: Hand XR

Other- plantar fasciitis, achilles tendonitis, spondyloarthritis

A

Joint space narrowing with ankylosis
Fluffy periostitis
Marginal erosisons leading to pencil in cup deformity, telescoping and arthritis mutilans
Distal tuft resorption
Soft tissue swelling

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16
Q

Scleroderma: Hand XR

CAS

A

CAS

Calcinosis (soft tissue)
Acrosteolysis (ddx: psoriatic arthritis)
Subluxed 1st CMC

17
Q

Ankylosing spondylitis: Back XR
- sacroiliac joints
- lumbar spine

A

XR CHANGES:
.Sacroiliac joints
1. Cortical outline lost
2. Juxta-articular osteosclerosis
3. Erosions
4. Joint ankylosis (fusion)

.Lumbar spine
1. Loss of lumbar lordosis
2. Squaring of vertebrae
3. Syndesmophytes (thoracolumbar region ligaments, irreversible)
4. Bamboo spine (bony bridging of vertebrae and osteoporosis)
5. Apophyseal joint fusion

18
Q

Ix for hand exam

A

Ix:
FBC: anaemia, wcc/neut infection
Biochem: albumin, renal and liver function for drugs
-CRP/ESR (disease activity)
-RF and anti-CCP
-urate
-complement (SLE)
-imaging
-urinanalysis (scleroderma)

-screen complications of dx + tx with basic bloods
. HbA1c
. Osteoporosis
. CVD risk factors

19
Q

Inflammatory myopathies (4)

Acquired myopathies (3)

Hereditary muscular dystrophies (2)

Other: NMJ, anterior horn cell, MND, spinal muscular atrophy.

A

Inflammatory myopathies:
-Dermatomyositis
-Polymyositis
-Inclusion body myositis
-Immune-mediated necrotizing myopathy (CK, HMG-CoA reductase Ab or SRP)

Acquired myopathies:
-eTOH
-paraneoplastic
-endocrine (thyroid, cushings, drugs- steroids)

Hereditary muscular dystrophies:
-Becker’s
-Myotonic dystrophy

20
Q

Dermatomyositis:
SUMMMARY: symmetrical proximal muscle weakness associated with tender muscles on palpation with characteristic cutaneous features ?pulmonary fibrosis ?underlying malignancy.

COMPLICATIONS
-malignancy
-ILD (anti-Jo1)

A

Features:
-Skin rashes (heliotrope, shawl sign, gottrons papules)
-Fingers (Raynauds, mechanic hands, dilated cap loops nail bed)
-muscle weakness (proximal, neck flexors, intact/absent deep tendon reflexes)
-dysphagia

Further exam:
-Face: bulbar dysfunction
-Cardio/resp: pulmonary fibrosis, pulmonary HTN
-Abdo: masses, lymphadenopathy suggesting cancer
-Steroid complications: cushingoid appearance, bruising, skin atrophy, cataracts or proximal myopathy

Ix:
-CK (disease activity)
-EMG: myopathic change (spontaneous fibrillation, low amplitude)
-myositis ab (anti-mi2, anti-Jo1, anti-PMSCl) and muscle biopsy
-complications:
. HRCT / PFTs
. TTE (pulmonary HTN)
. malignancy screen (age appropriate)
. steroids (BMD, HbA1c, lipids).

TREATMENT
-steroids
-MTX, AZA
-IVIG, rituximab

21
Q

Polymyositis
-Ix
-clinical features

A

. Ix (CK, anti-Jo1)
. dysphagia
. Restrictive cardiomyopathy/pericarditis and pleuritis
. muscle weakness (prox muscle) + tenderness

22
Q

Inclusion body myositis
. epidemiology
. clinical features

A

. Ix (muscle bx - inclusions in vacuoles, mononuclear infiltrates)
. Older adults (men >50yo)
. Progressive, asymmetric muscle weakness proximal to distal (finger flexors, wrist extensors, quadriceps (ant thigh) + dorsiflexion (ant tibial) )
. dysphagia

23
Q

Immune-mediated necrotizing myopathy
-Ix
-onset
-clinical features

A

. Ix: (CK, HMG-CoA reductase Ab or signal recognition particle SRP)
. rapid onset
. severe muscle weakness
. proximal + distal muscle groups