What is a common test used to assess the integrity of the anterior cruciate ligament (ACL)?

The Lachman test is commonly used to assess the integrity of the anterior cruciate ligament (ACL) and is considered one of the most reliable methods for diagnosing ACL injuries. This test involves flexing the knee to about 20-30 degrees and stabilizing the femur while applying an anterior force on the tibia. A positive result, indicated by increased anterior translation of the tibia relative to the femur, suggests an ACL tear.

This test is advantageous because it allows the clinician to assess the ACL's integrity with less discomfort for the patient compared to some other tests and can be performed even with significant swelling. Its specificity and sensitivity make it a preferred choice among healthcare professionals for ACL evaluation.