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Medical Photograph Library
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Friday, September 05, 2008
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Joint
infection (Septic arthritis): A 50-year-old man presented
with a 2-day history of right middle finger swelling, redness,
and pain. He denied any trauma to the finger. There was tenderness
and swelling over the middle knuckle of the finger. There was
pain with movement of the joint. The erythrocyte sedimentation
rate (a test that helps determine whether inflammation and/or
infection are present) was higher than normal. The white blood
cell count was normal. The physician drained fluid out of the
finger joint and sent the fluid to the lab for analysis. There
were a higher number of white blood cells in the joint fluid than
normal, which suggested infection. Here is a close-up
view . (L.S.)
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