1 00:00:00,035 --> 00:00:03,035 (English captions by Trisha Paul from the University of Michigan) 2 00:00:03,035 --> 00:00:07,259 The Lachman's test evaluates for a tear of the anterior cruciate ligament. With the knee 3 00:00:07,259 --> 00:00:11,071 flexed to thirty degrees, stabilize the femur and pull the proximal tibia 4 00:00:11,071 --> 00:00:13,129 anteriorly. 5 00:00:13,129 --> 99:59:59,999 Excessive motion or soft endpoint is a positive test.