This site is intended for healthcare professionals

Go to /sign-in page

You can view 5 more pages before signing in

Lachmann's test

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Lachmann's test determines anterior cruciate integrity.

The knee is flexed at 20-30 degrees and the leg is stabilized by the examiner sitting on the foot. The hamstrings should be relaxed. The leg and thigh are grasped firmly and moved in opposite directions.

Antero-posterior displacement of the tibia on the femur with the knee at 20-30 degrees and the muscles relaxed is a positive result.

Click here for video of Lachmann's test

Create an account to add page annotations

Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page