Fitness
Lachman Test Knee
The Lachman test assesses ACL integrity via anterior knee laxity—used clinically for diagnosis and follow-up, not for self-testing during rehab.
The Lachman test knee exam assesses anterior tibial translation with the knee slightly flexed—sensitive for ACL integrity before surgery and occasionally in late follow-up under clinician hands. A firm endpoint suggests intact or well-healed restraint; increased translation with soft endpoint suggests injury or graft laxity concerns.
Athletes do not self-perform this test. It informs imaging decisions and surgical planning more than daily training load.
Common questions
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Can you test your own ACL with the Lachman test?
No—technique and comparison to the other knee need trained hands. Self-testing is unreliable; see a clinician for stability concerns.
Related terms
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