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A member asked:
I had a bone scan on knee replacement feb, 2012. my gp said report said could be infection, loosening or trauma. please help me understand.
5 doctors weighed in across 3 answers
18 months ago: Your bone scan was 18 months ago. If you're no worse now than then, you've excluded infection which would have gotten worse. If it still hurts, your scan was showing arthritic changes.
Answered 1/2/2015
4.9k views
BS Not specific: Bone scans are very sensitive but not specific studies. Images show activity related to bone formation in response to an insult rather than the insult itself. Hence even though we can see the insult to the bone sometimes is difficult to tease out the cause. Plain films and a tagged wbc/marrow scan usually help differentiating infection vs loosening in your case.
Answered 12/9/2015
4.9k views
Needs correlation: A bone scan looks at the metabolism around the replacement. If there is lots of uptake, that means there is lots of bone turn over. Unfortunately several different things can cause increased turn over..Like infection, a loose prosthesis or even recent trauma and fracture. This must be assessed along with symptoms and possibly blood work.
Answered 3/8/2014
4.9k views
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