Manual examination
ProcedureWith the patient in a supine position, squeeze the skinfold between your thumb and pointfinger on the inner aspect of the middle third of the thigh and on the inner aspect of the middle third of the calf.
Place your hand under the proximal calf and the heel and move the leg into maximum flexion at the hip and knee joints. After the response, if any, is completed, move the limb back into full extension. Each of these movements lasts for one second.