Lie supine on floor or mat with hands behind neck. Test administrator stabilizes leg by placing one hand on knee.
Administrator grasps ankle of other leg and raises straight leg slowly until mild discomfort is felt. Repeat on opposite leg.
Angle of straight leg relative to floor is noted by placing goniometer on its axis on greater trochanter or placing inclinometer below the tibial tubercle. Other methods of measuring joint angles may be considered. 80° to 90° is a desirable score.