This outlines how to measure the true leg length.

Performing the Test

  1. With the patient lying supine, measure from the anterior superior iliac spine (ASIS) to the ipsilateral medial malleolus of each leg
  2. Positive: discrepancy>1cm


  1. Bickley L. Bate’s Guide to Physical Examination and History Taking. 10th ed. New York: Lippincott Williams & Wilkins; 2009.
  2. Hurley K. OSCE and Clinical Skills Handbook. Halifax: Elsevier Canada; 2005.