polyarthritis Flashcards
what pattern of ROM indicates articular issues (arthritis)?
pain w passive and active ROM
what structures are moving with passive ROM?
joints, but no muscle/tendon
what ROM pattern indicates non-articular issues?
pain on active, no pain on passive ROM
what pattern of features indicate inflammatory arthritis?
stiffness >30min, systemic symptoms, specific joint patterns, nodules, rashes, organ involvement
how do the infection routes differ for kids and adults in septic arthritis?
adults-blood
kids-contiguous (growth plate)
what patterns indicate septic arthritis in regards to fluid appearance, volume, viscosity, WBC count, PMN?
opaque, high (5-50ml), low viscosity, WBC >50,000, PMN >75
what is the epidemiology of gout?
males (most common inflammatory arthritis in M>40), not in premenopausal females
what risk factors predispose pt to gout?
- metabolic syndrome, obesity, HTN, diabetes, dyslipidemia
- ETOH, meds, ASA, diuretics
- renal insufficiency, concurrent illness, past kidney stone
- FHx, myeloproliferative disorder
where does gout usually start?
big toe (monoarthritis) in 30s, spread to other joints (lower limbs first)
what crystals are implicated in pseudogout?
calcium pyrophosphate
how does pseudogout happen?
calcium deposition in joints through trauma
what percentage of seniors have chondrocalcinosis?
50%
what factors increase risk of pseudogout?
age, OA, neuropathic joints, hyperparathyroidism, hypothyroidism, hemochromatosis, hypo PO4/Mg, FHx
where does pseudogout likely happen?
knees
what factors are needed to Dx pseudogout?
birefringence in synovial fluid, rhomboid shaped crystals, XR shows chondrocalcinosis