CT scanning of the knee was performed in one patient with a Baker's cyst and normal menisci and 8 patients with meniscal tears diagnosed at arthrography and confirmed at arthrotomy. The normal menisci were clearly demonstrated. The torn parts of the menisci invariably had ill-defined free edges and contained areas of low CT attenuation. In 2 patients swelling peripheral to the torn meniscus was only demonstrated at CT.
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