The sacroiliac jointโor SI jointโis one of the most misunderstood areas in the body. And yet, it plays a massive role in your ability to move, feel good, and stay injury-free.
If youโve ever looked for SI joint exercises or ways to relieve SI joint pain, chances are the info you found was generic, over-simplified, or just wrong. And thatโs a problem.
A dysfunctional SI joint can prevent you from gaining strength, limit your mobility, and leave you stuck in a loop of recurring pain or injury.
Letโs fix that.

What Is the SI Joint (And Why Should You Care)?
The SI joint connects your sacrum (the base of your spine) to your ilium (your pelvic bones). You have two of themโleft and rightโand together they form the foundation of your pelvis.
Think of your pelvis as the floor of your body. If the floor is off, everything built on topโyour spine, shoulders, legsโbecomes misaligned.
Hereโs the kicker: SI joint issues are often asymptomatic. You might be struggling with shoulder pain, knee discomfort, or tight hip flexorsโand never realize the source is pelvic instability rooted in the SI joint.
Why Standard Fixes Donโt Work
Most practitioners don’t fully understand the SI joint. Some even claim itโs not a real joint or that it doesnโt move. Thatโs not just wrongโitโs dangerous.
The SI joint is a total joint:
- It has a capsule
- It contains synovial fluid
- It has proprioceptors (tiny sensory “computers”)
- Itโs stabilized by key muscles and ligaments
When this area is off, you donโt just lose movementโyou lose the ability to communicate with your body.
A Deeper Look: Movement and Dysfunction
Physiologically, the SI joint has one primary movement axisโcalled the oblique axis. It helps the sacrum and ilium move together smoothly as you walk or bend.
But when dysfunction sets in, the joint can fall into 20+ different pathological movement patterns, leading to all sorts of compensations, from a false leg length discrepancy to upper-body pain.
If your treatment or exercise doesnโt account for these patterns, youโre just treating symptomsโnot the cause.
My Journey With the SI Joint
Iโve been in the health and fitness field for 30 years. I started out like most trainersโusing standard methods like PT and corrective exercises. But when I injured my own back (L4-L5 disc bulge with sciatic pain), those traditional approaches didnโt help.
Thatโs when I found osteopathy. It opened my eyes to how the body truly works: as a holistic, interconnected system.
And the SI joint? It was central to the whole picture.
How I Assess and Work With SI Joint Issues
When someone comes into my studio (or online), one of the first places I assess is the SI jointโno matter what pain they report.
Why? Because if the foundation is off, everything else will be too.
Hereโs my general approach:
- Assessment โ Identify which part of the SI joint is involved (lesser arm, greater arm, apex, base, etc.).
- Ligament Reboot โ Using manual therapy (like TLS and pumping) to reactivate proprioceptors and restore communication.
- Fascial Work โ Addressing deeper fascial chains that are often involved but ignored.
- Specific Exercise โ Not just general glute or core work, but targeted movement based on what your body needs.
Muscles involved include:
- Piriformis
- Glute Max (deep + superficial)
- Glute Med
- Obturatorius
- Iliopsoas
But again, itโs not just about muscles. Itโs about chains. You have to treat the whole system.
Don’t Google “3 Moves for SI Joint Pain” (Please)
Generic exercises might help a littleโor they might make things worse.
Why? Because SI joint issues are specific. The dysfunction could be from one of many regions within the joint or even a combination of them. Without proper assessment, you’re guessing.
And in the body, guessing is a great way to stay stuck.
Want to Learn More?
I share more like this every weekโso subscribe, share, and join the conversation. If youโre ready to go deeper:
- ๐ Grab my free ebook: โMove Better, Reduce Pain, and Live Life On Your Termsโ
- ๐๏ธ Book a consultation to see if weโre a good fit for private or online work
Donโt let a misunderstood joint hold back your potential. Fix the foundationโso the rest of your body can finally thrive.
itโs not just working out, itโs building a foundation for a better life.
Find out more @









