In 2 cases with a false negative Lachman test, there was firm reattachment of the torn end of anterior cruciate ligament to the proximal portion of the posterior cruciate ligament combined with a bucket handle tear of the medial meniscus. 2例Lachman试验假阴性的患者经关节镜证实为前十字韧带断端再附着伴有半月板桶柄样撕裂。