OA - Background Flashcards
Most common type of arthritis.
Results from a disparity between the ? applied to ? cartilage and the ability of the cartilage to withstand that ?.
Commonly affects the ?, ?, ???, ???, thumb ??? and hallux ??? joints
Commonly spares the ????’s
stress articular stress knee hip DIP PIP CMC MTP MCPJ
Clinical Features;
? pain;
o Initial ? related pain, then finally a constant ? pain.
Stiffness;
o Characteristically ? after periods of rest (‘?’), but lasts under ? mins
-
Symptoms classically follow a ? and ? course (good/bad days).
Later features are muscle ?, loss of ?, ? and joint
?.
progressive activity rest worse gelling 30 waxing waning wasting mobility deformity instability
On examination;
o Look: bony ?, muscle ?.
o Feel: ? ? tenderness, possible ?, ?.
o Move: limited ? ? ?
OA can either be localised (e.g. classically ? or ? OA) or ? (affecting
many joints).
swelling wasting joint line effusion crepitus ROM
hip
knee
generalised
Risk Factors;
?. ?. Family History: ? predisposition. Gender: ? OA more common in women, particularly after ?. Hyper? Previous ?. Occupation (?, ? etc.).
Protective Factors;
?
age obesity genetic polyarticular menopause hypermobility trauma farmer miner osteoporosis
Secondary OA can develop due to;
–Pre-existing ? damage: inflammatory/?/? arthritis, ???,
trauma.
–Metabolic disease: ?ly, ?sis, ?sis.
–Systemic disease: ? (leading to haemarthroses),
?ies, ?ies
joint septic crystal AVN acromegaly haemochromatosis chondrocalcinosis haemophilia haemoglobinopathies neuropathies
? OA is rarely symptomatic, unless accompanied by ?.
? radiological/pathological OA is not always symptomatic, showing the ? correlation between disability, symptoms and ? change.
Poor ? strength and ? mood are better predictors of pain
than ? severity.
early advanced poor structural quadriceps depressed radiological