Stretch Test for Sciatic Nerve Involvement
Straight leg raise neural test for the sciatic nerve. This technique applies a stretch to the sciatic nerve which is increased by moving the head.
The therapist raises the leg, keeping the knee straight. The therapist moves the ankle into a dorsiflexed position which lengthens the nerve. If there are no neural symptoms (tingling, shooting pain or tight, restricted feeling throughout the back of the leg), then the therapist may ask the patient to raise the head to further increase the stretch.