Videos: Anterior Cruciate Ligament Injury: Diagnosis, Management, and Prevention

Anterior drawer test

Increased range of motion with the loss of a discrete endpoint indicates a deficient anterior cruciate ligament (ACL).

Lachman test

Increased anterior translation of the tibia or loss of a discrete endpoint indicates a deficient ACL.

Pivot shift test

Subluxation of the knee will occur at 20 to 40 degrees of knee flexion if the ACL is deficient.

Crossover hop test

Patients who complete the crossover hop test without feelings of knee instability may be able to function well without an intact ACL.