Meniscal abnormalities in knee arthrography.

When carefully performed, arthrography is a safe, simple, and accurate method for the evaluation of meniscal abnormalities. Accuracy depends on an understanding of the various tear types, their arthrographic appearances, and their expected locations. The arthrographer must also be aware of other abnormalities, such as meniscal cysts and discoid menisci, which may be accompanied by meniscal tears. With careful attention to detail in positioning, filming, and interpretation, a diagnostic accuracy of 90 per cent or better can be expected in the evaluation of meniscal abnormalities by double-contrast knee arthrography.