Human anatomy is a fascinating field of study that has inspired…
Today’s question comes from Mar who wants to know:
“How can I protect my back in backbends?”
While there are many factors that contribute to low back pain in yoga, the one I want to address today has to do with bad posture. I’m talking about the habit of thrusting the hips forward and turning the feet out when standing. Charlie Chaplin famously adopted -and exaggerated- this posture.
This apparently harmless stance creates tension deep to the buttocks, possibly compressing the sacrum and low back. When carried over to yoga, this postural habit will have you pushing your hips up as high as possible in urdva dhanurasana (bridge pose) with painful consequences to your low back. (Here’s a completely different expression, of the same postural pattern).
The anatomical perspective:
Our hip rotator muscles live deep to the “glutes” in the buttocks. This muscle group is comprised of six individual muscles that connect the back of the femur to the pelvis. Acting together, these muscles turn the leg out, a movement also called “external rotation of the femur.” When standing, tight hip rotators will also tilt the pelvis backwards, while the two actions combined (external rotation of the leg and posterior pelvic tilt) may result in sacroiliac joint compression and back pain.
Allow me a little digression. Have you ever heard of the piriformis muscle? It is the most “famous” of all the hip rotators. Here’s why: it is singlehandedly responsible for a painful condition known as piriformis syndrome. Piriformis syndrome is caused by the compression of the sciatic nerve by way of an overly tight piriformis muscle. Luckily, this painful condition can be relieved through stretching and deep tissue massage.
Now, back to posture. If we move through life with our own version of Chaplin’s gait, our posture will affect how we perform asanas (yoga poses). This is because posture is not a static “thing”, but a pre-conditioned movement pattern. Those of us who habitually thrust our hips forward and splay our feet out, seek stability by tightening our hip rotators. This habit will also affect how we move into asana. When tightening the deep buttock muscles, it will be difficult to maintain the knees “hip width apart and parallel” in yoga poses such as bridge. This clenching will also compress the sacroiliac joint and cause discomfort in the low back.
The good new is that we can retrain our posture by bringing our femurs to a more neutral position, thus freeing up our low back and avoiding unnecessary pain.
Try these easy steps:
- Standing upright trace a horizontal line from your pubic bone to the outer edges of your hips. Here, you’ll be able to palpate the proximal portion of the femur, the greater trochanter, an easy easy to palpate bony landmark.
- Now, initiating movement from your greater trochanters, move your femurs into a slight internal rotation. Visualize the movement of your leg bones, as this will help you to better execute the movement. Keep your buttocks soft and your breath relaxed. Feel the subtle sensations in your body. Do you notice your sacrum growing wider? Does the weight distribution on your feet change?
- After you’ve become familiar with the previous exercise, bring it into your yoga practice. Instead of pushing your hips upwards in Setu Bandha Sarvanghasana (bridge prep), focus on the position of your femurs in relation to your pelvis. Gently turn them inwards without tightening the buttocks. What do you notice now? Are your legs working harder? This is because now they’re actually supporting the weight of your body, whereas before they were pushing into your low back.
The purpose of this exercise is to help you gain awareness of your body (and your posture!) on and off the mat. Will you give it a try?
PS: I’m teaching an anatomy and yoga workshop this Saturday -May 30th, 2015. Care to join us?