true leg length discrepancy test
true leg length discrepancy testA clinical test used to identify true leg length discrepancy.
The patient is placed in a supine position. The examiner uses the Weber-Barstow manoeuvre to “clear the hips” (i.e., place the patient’s feet on the table and have him or her raise and lower the hips), then has the patient extend both legs; the examiner measures the distance from the anterior superior iliac spine (ASIS) to the highest point of the medial malleolus on each leg, or the examiner measures the distance from the ASIS to the highest point of the lateral malleolus on each leg.
A difference of more than ¼ inch between the legs suggests possible structural leg length difference.