<prompt> Which one of the following tests will you adopt while examining a knee joint where you suspect an old tear of anterior cruciate ligament?Mc Murray testPivot shift testLachman testPosterior drawer test  <response>: Injury to tear of anterior cruciate ligament can be detected using lachman and anterior drawer test. Lachmann test is a similar test to anterior drawer test in which anterior glide of the tibia is judged with the knee in 10-15 degrees of flexion. Ref: Essential Ohopedics, 3rd Edition By J Maheswari, Pages 128, 314. 