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| 18 years clinical experience | 5-star Google reviews | Diagnostic first session | Free parking on site | Full session report after every visit|

Does This Sound Familiar?

The pain is on one side – lower back, buttock, or into the back of the thigh. It might be sharp when you twist, or a deep ache that never fully settles. Turning over in bed wakes you up. Standing on one leg to get dressed is genuinely difficult. You feel like your back is unstable, like something could go at any moment.

You’ve probably been told the joint is out of place. You may have had it manipulated repeatedly – it helps for a day or two, then you’re back to the same pattern. Some people are told to wear a belt indefinitely. Others are given glute exercises that don’t seem to make any difference.

The reason nothing has held is that the treatment has been aimed at the joint. The joint isn’t where the story started.

Stabilising the Keystone of the Body

The Sacroiliac (SI) Joints are the critical link between your spine and your legs. They are the two dimples at the base of your spine. Their job is to transfer the massive loads from your upper body down into your legs when you walk, run, or jump.

When the SI Joint becomes dysfunctional, the pain is specific and intense. It is usually felt on one side of the lower back, often radiating into the buttock or the back of the thigh. It can make turning over in bed agony. It can make standing on one leg to put on a shoe impossible. It creates a feeling that your back is “out” or unstable.

Patients are often told their SI Joint is “out of place” or “dislocated.” At Breakthrough Pain & Performance, we know this is rarely true anatomically. The SI Joint is held together by some of the strongest ligaments in the body. It moves only a few millimetres. The problem is not that the joint is out of place. The problem is that the neurological locking mechanism has failed, or has become stuck in the “on” position.

Form Closure vs Force Closure

To understand SI Joint pain, you must understand how the joint stays stable. It uses two mechanisms.

1. Form Closure: The bones fit together like puzzle pieces. The ridges on the Sacrum lock into the ridges on the Ilium.

2. Force Closure: The muscles (Glutes, Lats, and Core) squeeze the joint together to clamp it tight during movement.

dysfunction usually occurs when Force Closure fails. If your Glute Max (buttock) or your opposite Lat (back muscle) are inhibited, they cannot clamp the joint tight enough when you walk.

The brain detects this micro-instability. It senses that the joint is wobbling. To protect the spine, the brain triggers a massive reflex spasm in the deep ligaments and the Piriformis muscle. This spasm is what causes the pain. It is a desperate attempt by the body to create stability where the muscles have failed.

We treat the failure of Force Closure. We do not just crack the joint. We reactivate the Glutes and the posterior oblique sling. Once the muscles are doing their job of clamping the joint, the brain relaxes the painful protective spasm.

The "Locked" SI Joint

Sometimes the problem is the opposite. The joint gets stuck. This happens when the brain perceives a threat and locks the joint down permanently. The large ligaments (sacrotuberous and sacrospinous) become rigid and painful to the touch.

This often happens after a fall, a misstep off a curb, or a difficult childbirth. The brain remembers the trauma and keeps the joint splinted.

This locking prevents the natural shock absorption of the pelvis. The force of walking goes straight up the spine, causing headaches or neck pain. We use P-DTR to signal to the brain that the trauma is over. We reset the mechanoreceptors in the ligaments. Once the threat signal is removed, the ligaments soften, and the joint begins to move naturally again.

The Glute Inhibition Loop

Pain in the SI Joint causes the Glute muscles to switch off. This is a known neurological reflex called Arthrogenic Muscle Inhibition.

This creates a vicious cycle. The SI Joint hurts, so the glute switches off. The glute switches off, so the SI Joint becomes unstable. The instability causes more pain.

You cannot break this cycle just by doing glute bridges. The brain is actively blocking the signal to the glute. We have to break the reflex arc first. We use sensory stimulation to dampen the pain signal from the joint. This opens the neural pathway to the muscle. We then immediately train the glute to fire. Patients are often amazed at how their strength returns instantly once the joint pain is silenced.

Leg Length Discrepancy: Real or Functional?

Many patients with SI Joint pain are told they have one leg shorter than the other. While true anatomical leg length differences exist (bone length), most discrepancies are Functional.

The pelvis is twisted due to muscle imbalance. The QL muscle in the lower back hikes one hip up, making that leg appear short. Or the psoas rotates the pelvis forward, making the leg appear long.

We do not treat this with heel lifts (which can make it worse). We treat the muscle imbalance. We release the tight QL and Psoas. We stabilise the pelvis. In almost all cases, the legs become even again once the neurology of the pelvis is balanced.

Where It Usually Actually Starts

In 18 years of helping people resolve SI joint pain, the most consistent finding isn’t in the pelvis at all. It’s in the ankle.

An old sprain. A fracture. Even a significant knock that seemed to heal fine. What happens in the weeks after an ankle injury is that the body changes how it walks – subtly, automatically, without the person being aware of it. The brain reroutes the movement pattern to protect the injured area. That rerouting is temporary in theory. In practice, it often becomes permanent because the nervous system never received the signal that the original threat had passed.

Months or years later, the altered gait has changed the load distribution through the hip and pelvis. The SI joint is working harder than it should. The muscles that should be stabilising it have been gradually inhibited by the compensation pattern. And now the joint hurts.

Nobody has connected the dots because nobody asked about the ankle. The pain is in the back. That’s where treatment gets aimed.

Before I assess the SI joint itself, I run through what I call the ten basic brain challenges – a set of neurological tests that establish how accurately the brain is reading information from the body, and how accurately the body is responding to the brain’s signals. Without doing this first, any local treatment is working

with corrupted data. Once the brain-body communication is clear, the body shows what it’s actually dealing with – not a filtered version distorted by protective compensation. That’s the real start line.

From there, the history matters enormously. Where you’ve been. What injuries you’ve had. What you’ve noticed about how you move. Often the thing that unlocks SI joint pain is a conversation about something that happened years ago that the client had long since dismissed as irrelevant.

Convenient Access for SI Joint Patients

SI Joint pain makes sitting in a car uncomfortable. Our clinic in Shiremoor is easily accessible. We are just a 10 to 15 minute drive from most locations in North Tyneside.

We offer free parking directly outside the door. You can arrive, park with ease, and walk straight into a professional environment. We understand that walking is painful, so our clinic is on the ground floor with no stairs.

A Recent Example

Julia came in with what she described as back pain. Assessment quickly pointed toward SI joint dysfunction. But the real driver wasn’t the joint – it was a historical ankle issue that had quietly changed the way she moved and loaded her pelvis over time. Once we addressed the neurological root of that pattern, the SI joint stopped being under constant threat. The pain that had been present for months began to resolve properly, not temporarily.

That’s a pattern I see consistently. The SI joint is the location of the pain. It’s rarely the origin of it.

Your Recovery Pathway

We follow a structured protocol for pelvic pain.

The Diagnosis: We perform specific orthopaedic tests (Laslett Cluster) to confirm the pain is coming from the SI Joint and not the disc.

The Release: We release the protective spasms in the Piriformis and QL muscles.

The Activation: We wake up the Glute Max and the deep core to restore Force Closure.

The Belt: In acute cases, we may use an SI Joint belt temporarily to provide artificial stability while the muscles strengthen.

Who Is This For?

This clinic is for you if:

  • You have one-sided pain: Specifically low in the back or buttock.
  • You are pregnant or postpartum: Pelvic girdle pain is a specialty of ours.
  • You have pain turning in bed: A classic sign of SI instability.

We provide stability for your spine.

The information on this page reflects 18 years of clinical experience working with clients experiencing SI joint dysfunction, pelvic instability, and related lower back conditions. It is intended to explain our clinical approach and is not a substitute for individual medical assessment. If you are unsure whether this is the right approach for your situation, the diagnostic first session is designed to answer exactly that question.

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If you’re unsure whether this can help you, these quick answers may help you feel more confident about your next step

Frequently Asked Questions

Can SI joint pain come from somewhere other than the pelvis?

In the majority of cases we see, yes. The most common origin is an old ankle or foot injury that changed movement patterns and gradually increased load through the hip and pelvis. The SI joint becomes painful because it’s been compensating for a problem elsewhere, often for years.

Manipulation addresses the joint directly. If the reason the joint is under stress is a neurological compensation pattern originating elsewhere, manipulating the joint removes the symptom without touching the cause. The pattern reasserts itself and the pain returns. Lasting resolution requires finding and correcting the original driver.

Before assessing any local area, we run a set of neurological tests that establish how clearly the brain is communicating with the body. If that communication is distorted – which it often is after injury or long-term compensation – any local assessment will produce unreliable findings. Clearing that first means the body can show us what it’s actually dealing with.

For most clients, the primary pattern driving SI joint pain can be identified and significantly addressed within three to five sessions. Where there are multiple historical layers – old injuries, long-term compensations, or deeper neurological patterns – more sessions allow us to work through each layer properly.

Yes. Pelvic girdle pain and SI joint dysfunction during and after pregnancy is a common presentation. The neurological approach is appropriate and effective, and the assessment adapts to the individual’s circumstances.

Yes. We regularly work with clients who have had prior interventions. The assessment establishes what is still driving the problem regardless of what has been tried before.

Next Steps - Where we are and convenient access

Our clinic is based in Shiremoor, Newcastle, a ten to fifteen minute drive from most of North Tyneside. Free parking is directly outside. The treatment room is on the ground floor with no stairs – something that matters when SI joint pain makes walking difficult. If you’re travelling from Newcastle city centre, Whitley Bay, Wallsend, or the surrounding areas, getting here is straightforward.

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