Clinical skills - Infl Arthritis Flashcards
Polyarticular pain
Pain in at least 4 joints
Arthralgia
Aching in joints without swelling
Characteristics of infl arthritis
Early morning and inactivity stiffness - generally >1 hr, averages 3 hrs in RhA and parallels degree of joint infl
Systemic symptoms e.g lethargy, wt loss, pyrexia
Why we distinguish between infl and non-infl
Infl is potentially more serious
Many forms have systemic manifestations
Early recognition & intervention improves outcome
Common types of arthritis
Acute (self-limiting) infl
Chronic infl
Acute (self-limiting) infl arthritis
Infection related, viral e.g Rubella, Hep B, Streptococcus
Goes away by itself
What does acute infl arthritis present with
Sudden onset
Fever and systemic upset
Variable severity
6-12 weeks duration
Types of chronic infl arthritis
RhA (lasts more than 6 weeks) SpA - psoriatic, axial SpA Crystal arthritis - Gout, CPPD Connective tissue disease e.g. SLE, polymyostis Others e.g sarcoid
OA aetiology - secondary
Trauma Congenital disorders Metabolic Endocrine Neuropathic Paget's Infl arthritis
Clinical features of OA
Pain - activity related Transient morning/ inactivity stiffness Joint enlargement Limitation of movement Muscle atrophy Crepitus
OA distribution
DIP > PIP > MCP (v common) CMC thumb - squaring AC shoulder Hips Knees MTP Feet Facet
Classification criteria for RhA
4/7 criteria = RhA
Morning stiffness > 1hr Arthritis of >3 joint areas Hand involvement Symmetry Nodules Radiographic erosions RhF +ve
First 4 need to have been for 6 weeks
Clinical features of spondylarthrosis
Uveitis Psoriasis Hip arthritis Peripheral arthritis Dactylitis Enthesitis Psoriatic nail changes
Epidemiology of SpA
Slightly less common than RhA
Prevalence 0.5-1%
Caucasion > Asian > Afro-Caribbean
Proportional to freq of HLA-B27
Psoriatic arthritis
Arthritis usually follows but may precede psoriasis
Severity of joint and skin disease independent
Nail involvment in 80% and only 20% of psoriasis alone
Good prognosis esp in pauciarticular disease
Clinical subsets of arthritis
Monoarthritis/ oligoarthritis Asymmetrical polynarthritis (DIP predominant) 'Rheumatoid' polyarthritis Psoriatic spondylitis Arthritis mutilans
Hx in polyarthritis
Age Sex Mode of onset Severity of joint infl - intensity and no. swollen joints Temporal pattern of joint involvement Distribution of joint involvement Rheumatology hx
Distribution of joint involvement in polyarthritis
Small joint: MCP - RhA, DIP and PIP - OA
Large joint: Hip and foot - SpA or crystal
Lab investigations in polyarthritis
FBC ESR and CRP RhF, ANA, anti-CCP, HLA-B27 Uric acid Synovial fluid analysis
Radiology for polyarthritis
X-ray
Ultrasound
MRI
Classification of spondylarthrosis
Axial SpA Reactive arthritis Psoriatic arthritis Enteropathic arthritis Undifferentiated spondylarthritis
Concepts of familial disease in poly arthritis
Most of the arthritis “run in families”
Very few directly inherited
Many associated w/ HLA e.g. DR4 - RA, GCA & B27 - AS, spondyloarthritidies
HLA-B27 associated SpA’s
Ankylosing spondylitis Psoriatic arthritis Juvenile SpA Arthritis associated w/ IBD Reactive arthritis Undifferntiated SpA Acute Anterior Uveitis
Criteria for ankylosing spondylitis/ Axial SpA
Sacroilitis at least grade 2 bilaterally or grades 3/4 unilaterally
Low back pain and stiffness for <3 months that improves w/ exercise but isn’t relieved by rest
Limitation of motion of the lumbar spine in both the sagittal and frontal planes
Limitation of chest expansion relative to normal values correlated for age and sex