The four key poses for sciatic relief
Sciatica involves compression or irritation of the sciatic nerve, which runs from the lower back through the hip and down the leg. The goal of a therapeutic yoga sequence is not to stretch the nerve directly — that can aggravate the condition — but to create the conditions in which the nerve has more space and the surrounding musculature releases its grip.
Utthita Trikonasana (Extended Triangle Pose) with a diagonal stance is one of the most relieving poses for sciatica. The diagonal foot position allows the pelvis to open more fully, creating traction along the lateral line of the body and decompressing the lumbar spine. A block under the bottom hand ensures the student does not collapse into the hip, which would reduce the therapeutic effect.
Ardha Chandrasana (Half Moon Pose) — specifically the action of the back leg — is one of the most powerful tools in the Iyengar repertoire for sciatic conditions. Extending and activating the back leg creates length and space in the hip and sacral area, directly addressing the compression that often underlies sciatic pain. Lois Steinberg's research on the back leg in standing poses documents this action in detail: the back leg must be active, not passive, for the therapeutic effect to occur.
Prone Savasana (lying face down) proves to be quite releasing for many students with sciatica. The prone position gently extends the lumbar spine and allows the sacroiliac joint to settle. It is often used as a resting pose between more active work.
Supta Padangusthasana (Reclining Hand-to-Foot Pose) with support — using a belt around the foot and a block or bolster under the raised leg — allows the hamstrings and hip external rotators to release without the student having to work against gravity. This is particularly effective when the sciatic nerve is irritated and direct stretching would be too aggressive.
"The back leg must be active and extended in all standing poses. A passive back leg loses the therapeutic benefit of the pose." — Lois Steinberg, Yoga for the Back Leg
What to avoid
Deep forward folds without support, aggressive hamstring stretches, and poses that compress the sacroiliac joint (like Virasana or Baddha Konasana without props) can aggravate sciatica. The principle in therapeutic Iyengar yoga is to create space, not to force length. If a pose increases the sciatic sensation, it is not the right pose for that student at that time.