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We evaluated the ability of high-resolution, real-time sonography to identify and characterize artificially produced lesions in the menisci in human cadavenc knee specimens.In total, 20 lesions created in 10 specimens from five knees were prepared and examined sonographically.Four we studied the ability of sonography to reveal meniscal tears under optimal conditions in vitro. Materials and MethodsFive cadaveric knees were obtained from the Department of Biological Structure at the University of Washington. ftJl knees were specimens that included the intact joint capsule and approximately 15 cm of normal lower extremity both above and below the joint. Four of the specimens were fixed; the remaining knee was fresh frozen. The knees were examined under fluoroscopy to exdude any specimen with surgical or congenital anomalies. At the time of fluoroscopy, 18-gauge needles were placed on both the ventral and dorsal surfaces of the specimen to identify a sagittal plane that would bisect the intercondylar fossa and the intercondylar eminence of the tibial plateau. Each specimen was initially bisected with a bandsaw in this sagittal plane. Subsequently, two equally spaced Downloaded from www.ajronline.org by 34.218.44.141 on 05/11/18 from IP address 34.218.44.141.