Special Tests Flashcards
Lachman test
The Lachman test is a passive accessory movement test of the knee performed to identify the integrity of the anterior cruciate ligament (ACL). The test is designed to assess single and sagittal plane instability.
https://www.physio-pedia.com/Lachman_Test
Technique:
Lie the patient supine on the bed. Place the patient’s knee in about 20-30 degrees flexion. According to Bates’ Guide to Physical Examination, the leg should also be externally rotated slightly. The examiner should place one hand behind the tibia and the other on the patient’s thigh. It is important that the examiner’s thumb be on the tibial tuberosity. On pulling the tibia anteriorly, an intact ACL should prevent forward translational movement of the tibia on the femur (“firm end-feel”).
