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Septic Arthritis (Risk Factors (Recent joint surgery, Prosthetic joints,…
Septic Arthritis
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Clinical Presentation
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Most common in knee, hip and shoulder but can occur in any joint
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Early infection - wound inflammation/discharge, joint effusion, loss of function and pain
In the young and previously fit - agonisingly painful, red, swollen, hot joint
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Treatment
Joint should be immobilised early, followed by early physiotherapy to prevent stiffness and muscle wasting
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Double prednisolone dose - ONLY IF ALREADY ON LONG TERM (need flight or fight response , which these patients are lacking)
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Diagnosis
ESR, CRP and WCC raised - CRP may not always be raised
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Skin wound swabs, sputum and throat swab or urine if gonoccal infection possibility
URGENT JOINT ASPIRATION
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Normal fluid is clear, yellow and quite thin
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Key Facts
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Joints become infected by direct injury or by blood-borne infection from an infected skin lesion or other site
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