In the same position, to test for lateral compartment cartilage defects, the examiner applies a varus stress to the knee. Normal crepitation may be felt under the iliotibial band, so it is important to place one's fingers anterior and posterior to the iliotibial band at the joint line. It can be extremely difficult to differentiate joint-line crepitation caused by an articular cartilage lesion from an isolated or concurrent meniscal tear.