Pelvic Tilt: What Is It and How Do You Know You Have One?

Your pelvis is the central hub of your skeleton. It sits between your spine and your legs, and it acts as a base for your upper body. When it is level and balanced, your weight spreads evenly. When it tilts, every joint above and below it has to adjust. This adjustment is called compensation. It is often the reason people feel pain in a place that seems to have nothing to do with the real problem.

What are the different types of pelvic tilt?

There are three main types: anterior (forward), posterior (backward) and lateral (side to side). Each one moves the pelvis in a different direction. Each one also puts strain on the body in a different pattern.

Many people have two types at the same time, for example an anterior tilt along with a drop to one side. This is why looking at the pelvis on its own rarely tells the whole story. You need to see how it relates to the spine above it and the legs below it.

How do you know if you have a pelvic tilt?

You may notice signs in the mirror. Or you may feel aches that keep coming back without any clear injury. Common signs include:

• A very deep curve in the lower back, or a lower back that looks flat.
• One hip looking higher than the other when you stand in front of a mirror.
• Trousers or a belt sitting unevenly around the waist.
• Lower back, hip or knee pain that keeps coming back and does not get better with rest.
• Tightness in the hip flexors or hamstrings on one or both sides.
• Feeling off-balance, or leaning on one leg more when you stand still.

These signs can overlap with other conditions. So accurate imaging is important to confirm whether a tilt is there and how far it affects your alignment.

What causes a pelvic tilt?

A pelvic tilt develops when the muscles and joints around the pelvis carry uneven load over time. Common factors include sitting for long hours, an old injury, muscle imbalance and natural differences in leg length or joint shape.

Your body is a connected chain from your feet to your head. When the pelvis tilts, the spine curves to make up for it, the shoulders may shift, and the knees or ankles take extra load. So the pain you feel might be in your knee or lower back, while the real cause could be a pelvic tilt that nobody has measured.

Why does a pelvic tilt need to be checked while standing?

A pelvic tilt is a weight-bearing problem. It only shows its true effect when you are upright and gravity is acting on your skeleton. When you lie down for a standard X-ray, CT or MRI, your muscles relax, the pressure on your joints eases, and the tilt can partly or fully disappear. The scan may come back looking normal, even though you feel far from normal when you stand and walk.

An EOS scan takes a full-length image of your body while you stand naturally. It captures your pelvis, spine, hips, knees and ankles in one exposure. This lets a specialist see how one area affects every other. EOS also uses about 90% less radiation than a standard X-ray, around ten times less, which makes it a practical choice for whole-body imaging.

What helps once a pelvic tilt is found?

Finding the type and extent of a pelvic tilt is the diagnostic step. ScanAlign provides the imaging and clinical report, not treatment. Once you have a clear picture of your alignment, the professional treating you can use it to plan the most suitable next step.

Depending on the findings, this might include physiotherapy to address muscle imbalances, a referral to an orthopaedic specialist, changes to footwear for a leg length difference, or further tests. A standing whole-body image gives anyone treating you a measurable baseline they can look back at over time.

Before you start a treatment, or change the one you are on, it is worth getting a detailed diagnosis. Knowing whether the cause sits in your pelvis, your legs or your spine changes what will actually help.

Frequently asked questions about pelvic tilt