There are several clinical examination techniques which can be used to assess the integrity of the ACL. The most useful single test is Lachmans test. Completing this test with an AP draw test and pivot shift test increases the sensitivity of the clinical exam. It is important to remember that in the acute setting these tests can be difficult to perform due to pain and muscle spasm.
Patients will also generally display a variety of other non-specific findings. They may walk with an antalgic gait, have a gross effusion and/or a loss of ROM. It is also important to assess for the presence of a meniscal injury or ligamentous laxity.