Common finding: Most patients undergoing knee MRI will have a trace amount of fluid in the joint space. This is considered a normal physiologic finding.
Answered 4/30/2018
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Not important: There is a small or trace amount of fluid in most joints to lubricate the articular surface. This fluid helps preserve the cartilage and makes motion smoother. If there is a small or trace amount in the knee, this is probably normal. Excessive fluid around the knee is something to worry about, and you should see your doctor for this.
Answered 5/7/2019
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