[Importance of the examination level in the ultrasonic diagnosis of knee joint meniscus injuries].

One hundred and five cases have been selected at random out of the first 500 ultrasonographic examinations of the knee joint. The ultrasonographic findings have been compared to the arthroscopic operative descriptions. Examinations have been performed on intact knee joint menisci of dead young persons to improve specificity, sensitivity and accuracy of the method. Based on these experiences, optimal method of examination of the semilunar cartilage is reported. Special attention is given to the advantages of two-view (cross and longitudinal section) examinations. Against the opinion of many authors it is stated that longitudinal section image of the meniscus provides more information even in cases of longitudinal ruptures, while radial injuries can be recognized only in this plane.