Ultrasound Diagnosis Of Anterior Cruciate Ligament Injury

ObjectiveThis study through the ACL injury of the knee ultrasound diagnosis and MRI findings. Results of arthroscopic diagnosis compared, to observe the effects of the high and low frequency ultrasound combined with the use of in the knee joint ACL injury of audio-visual feature map and it’s diagnostic value, in order to assess the clinical value of ultrasonography in the knee joint ACL injury.MethodsFrom July 2014 to January 2015, physical examination and ultrasonography were performed before the surgery of 40 patients with ACL injuries, and physical examination including anterior drawer test, pivot shift test and Lachman test. Ultrasound examinations were diagnosed using high frequency linear array probe and low-frequency convex array probe of Yum My Laby60 imaging system. In the examination process, the bilateral knee joints were used in the examination. All the examination data of the patients were saved. After the operation, the data were analyzed statistically and the final results were obtained.ResultsUltrasound can clearly show the ACL contour, structure and damage degree of the knee joint.40 cases of ACL injury patients, ultrasound diagnosis of ACL injury in 40 cases, ultrasonography showed complete ruptures or partial rupture of ACL discontinuity or abnormal concretion, compared with the uninjured side increased thick or thin, uneven echogenicity, margin irregularly seen around the local dim. ACL injury was diagnosed by arthroscopy in 40 cases, complete rupture in 30 cases, partial rupture in 9 cases, absorption or atrophy in 2 cases. Arthroscopic confirmed that ultrasound in the diagnosis of 38cases with arthroscopy is consistent with the results, accuracy rate of 95%(38/40), misdiagnosis rate was 5%(2/40). The false negative in 2cases, false positive in 0 case. Ultrasonic diagnosis and arthroscopy in the diagnosis, the difference was not statistically significant (P＞0.05);comparison of ultrasound and MRI diagnosis results, the difference was not statistically significant (P＞0.05).ConelusionHigh and low resolution sonography can better show the ACL injury and has better diagnostic value and clinical application value, is a kind of economic practical, simple and convenient, noninvasive no radioactive imaging diagnostic methods. So it can be as a method of screening and diagnosis of ACL injury in clinical, especially in primary hospital.