Read more about the Lachman Test in the AMBOSS Library: https://go.amboss.com/LachmanTest

The Lachman test is a physical examination maneuver that asseses anterior cruciate ligament (ACL) integrity, which is an essential component of knee stability. The Lachman test is best conducted on a supine patient with the knee flexed at 20 to 30 degrees. Physiologically, when the femur is stabilized and the tibia is pulled anteriorly, a welldefined "endpoint" that limits anterior movement of the tibia can be felt. In a positive Lachman test, however, there is excessive unrestricted anterior movement of the tibia, with no "hard" end point. This indicates an ACL injury or tear.

Video Index:
0:06 Purpose of the test
0:17 Performing the test
1:04 Logical basis and interpretation of the test outcome

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