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 acts as a platform for your upper body. When it is level and balanced, your weight spreads evenly. When it tilts, every joint above and below has to adjust. That adjustment is called compensation, and it is often the reason people feel pain in a place that seems unrelated to the actual 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 shifts the pelvis in a different direction and creates a different pattern of strain through the body.

Many people have a combination of two types at once, for example an anterior tilt with a lateral drop. That is why looking at the pelvis in isolation rarely tells the whole story. You need to see how it relates to the spine above and the legs below.

How do you know if you have a pelvic tilt?

You may notice visual clues in the mirror or feel recurring aches that do not match a clear injury. Common signs include the following.

• An exaggerated lower back curve or a visibly flat lower back.
• One hip appearing higher than the other when you stand in front of a mirror.
• Trousers or a belt sitting unevenly around the waist.
• Recurring lower back, hip or knee pain that does not improve with rest.
• Tightness in the hip flexors or hamstrings on one or both sides.
• Feeling off-balance or favouring one leg when you stand still.

These signs can overlap with other conditions, so accurate imaging is important to confirm whether a tilt is present and how far it extends through your alignment.

What causes a pelvic tilt?

A pelvic tilt develops when the muscles and joints around the pelvis are loaded unevenly over time. Common contributing factors include prolonged sitting, previous injury, muscle imbalance and natural variation 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 compensate, the shoulders may shift, and the knees or ankles take extra load. That is why the pain you feel might be in your knee or lower back, but the underlying cause could be a pelvic tilt that nobody has measured.

Why does a pelvic tilt need to be assessed standing up?

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, your joints decompress, and the tilt can partially or fully disappear. The scan may come back looking normal, even though you feel anything but 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, so a specialist can 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 identified?

Identifying 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, your clinician can use it to plan the most appropriate next step.

Depending on the findings, that might include physiotherapy to address muscle imbalances, a referral to an orthopaedic specialist, footwear adjustments for a leg length difference, or further investigation. Having a standing whole-body image gives any treating clinician a measurable baseline they can refer back to over time.

Frequently asked questions about pelvic tilt