Nourish Body & Mind

Named and shamed – the SI joint(s)

This morning, the SI joint knocked at my door. “I’m very upset.” Um – what? “You know, every one else is famous for causing lower back pain, the muscles, vertebraes, discs and nerves – they all laugh at me. No one talks about me, but I’m responsible for a LOT of that, too!” OK, I see. You want to be named and shamed, right? “Exactly! Can you help?” Well…

In case you’re wondering where or what the SI joint is, you’re not alone. It’s one of these things we take for granted and only pay attention to when it hurts (like so many things in life..sigh). Anyway. Imagine your spine. As yogis, we think a lot about the spine, right? And now picture your hips, or more precisely, your pelvis. How do they fit together? Exactly, you get my point.

The SI joint works like a padlock

The SI (sacroiliac) joint lies between the sacrum and the ilium of the pelvis. The sacrum bears the weight of the spine and distributes it to the two supporting iliums, one on each side. The SI joint, or rather joints, even though we mostly talk about them in singular, work a bit like a padlock. That’s quite technical, so I inserted an image. (Like with everything else, your SI joints will look completely different from the person on that sticky mat next to you.)

Normally, the SI joints don’t move much. They’re there to give stability, after all. Truth is, that probably only a very high impact shock could make them move at all (think of an elevator crash..). BUT. If you’ve been practising yoga for years and years and…, you’re kind of likely to develop a sort of nagging pain in your lower back, just below the belt line, where there’s that bumpy, bony bit, mostly on one side. There might be other reasons for this pain (such as sciatica), but there’s a high chance it’s SI joint pain.

So where does it come from and why does it only appear in relatively advanced students?

Imagine you are moving your joint while trying to keep the spine straight. If you don’t carefully align your hips, they will naturally want to follow the movement of the joint/leg. If the spine remains straight, the SI joint has to take the blame. We said the joints barely move – that’s right, but imagine how years of advanced (read: higher joint mobility) practice and thousands of joint movements can change this. Picture a cup that breaks. You can glue it back together, but what if you don’t get it right and there’s misalignment? Exactly – ouch! Overstretched ligaments add their bit to the pain.

Absolute killer postures are asymmetrical forward bends where one side of the pelvis is held back and the arms pull the other side forward. Even forward bends that are not absolutely even on both sides, for example because one hamstring is shorter, cause trouble. Another challenge for the SI joints are postures like Warrior II, where the pubic bones are pulled away from each other due to high abduction.

Of course, like for any other medical condition, there’s a name to it: Sacroiliac joint dysfunction. While it’s great to know what causes the pain, it’s better to know how to get rid of it (or even prevent it). I’ll post a summary soon.

Meanwhile wishing you a safe and healthy practice – Namaste!

7 replies »

  1. Nicely done – good explanation. And yes long practicing yogis do end up moving that joint – just a tad – but that is enough to cause some pain. I found the best thing to do is remember that the SI join is a joint of STABILITY not mobility. Remembering this tends keep us yogi more careful.


    • Thanks for your comment, and yes, you’re so right! Unfortunately in (some) yoga classes there’s a lot of competition going on and people want to match the mobility of that person on the mat next to them, even though their bodies are not ready yet…But nature has a fool-proof method of making us stop: pain.


  2. Interesting! I’m curious as to what that pain feels like. I’m happy to say I haven’t experienced it yet. But I do know how sciatica feels and find it interesting that it’s easy to aggravate sciatica via yoga poses if you aren’t careful, even for advanced students! I’ve forward-bended myself into sciatic pain many times :/

    I love how yoga takes you into your body to discover fascinating concepts like SI joint dysfunction. Sure, it’s probably not fascinating if you have it, but I get the feeling from your post like the one I had when I discovered there was such a thing as Greater Trochanteric Syndrome.


    • Thanks for commenting and sorry to hear you’re suffering from sciatic pain. Did you find a method to stop the pain? I guess the only positive we can take out of that is that at least we’re getting to know our bodies and how they work. It’s a bit sad though that many people tend to take their bodily functions for granted – we expect everything to just work fine without really taking care of it. Just imagine putting the wrong type of fuel in your care only once!


Please share your thoughts!

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s