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

What is anterior pelvic tilt?

Anterior pelvic tilt is a postural pattern where the pelvis rotates forward around the hip joints. Think of your pelvis as a bowl of water. In a neutral position, the water stays level. With an anterior tilt, the bowl tips forward and water would spill out of the front.

When this happens, the lower spine curves inward more than it should. This is sometimes called an increased lumbar lordosis. The effect travels both up and down. Your body is a connected chain from your feet to your head. So when the pelvis sits out of position, it can change how your knees track, how your mid-back rounds and even how your neck sits.

A small degree of forward tilt is normal. The pelvis naturally sits at a slight forward angle. It only becomes a problem when the tilt is large enough to overload the lower back, change the way you walk or cause pain elsewhere.

What are the symptoms of anterior pelvic tilt?

The most common symptom is a dull, persistent ache in the lower back, especially after standing or walking for a long time. The tilt changes your whole posture chain. So you may also feel pain or tightness in areas that seem unrelated to the pelvis.

Many people with anterior pelvic tilt also notice that their buttocks seem to stick out more than usual. This gives the look of an exaggerated "duck" posture. If you have sudden numbness, weakness in your legs, or loss of bladder or bowel control, get urgent medical help from your doctor or the nearest emergency department. These are not typical of a simple pelvic tilt and need to be checked straight away.

What causes anterior pelvic tilt?

Anterior pelvic tilt is most commonly caused by a mix of muscle tightness and weakness that builds up over time. Several muscle groups hold the pelvis in place, each pulling in a different direction. When some become too tight and others too weak, the balance shifts.

The key point is that the causes are rarely limited to one area. A difference in leg length, for example, shifts the pelvis. That increases the lumbar curve, which then tightens the hip flexors. Each part makes up for another. This is why looking at the pelvis alone, without seeing the full chain, can miss the underlying cause.

How is anterior pelvic tilt assessed when you are standing up?

The most accurate way to assess pelvic tilt is with imaging taken while you are upright and carrying your own weight. When you lie down for a normal X-ray, CT or MRI, gravity no longer acts on your spine and pelvis in the same way. Your muscles relax and the tilt can flatten out. This makes everything look more normal than it really is.

An EOS scan captures a full-length image of your skeleton while you stand naturally. It uses about 90% less radiation than a standard X-ray, around ten times less. It shows you from head to foot in a single image. So your clinician can see exactly how the pelvic tilt is affecting your lumbar spine above and your knees and feet below.

This matters because pain from an anterior tilt often appears away from its true source. You might have a knee problem that started with a shift in the pelvis. Or you might have lower back pain driven by a small difference in leg length. A standing whole-body image connects the dots that scans of a single area cannot.

What helps with correcting anterior pelvic tilt?

Correcting anterior pelvic tilt generally involves dealing with the muscle imbalances that hold the pelvis in that position. Physiotherapists and exercise professionals commonly recommend stretching the hip flexors and strengthening the glutes and stomach muscles. Better sitting habits and regular breaks from long hours of desk work can also help over time.

However, targeted exercises work best when you know exactly what is going on in the structure of your body. If the tilt is partly driven by a difference in leg length or the shape of a joint, stretching alone will not resolve it. That is where accurate diagnostic imaging fits in. It gives the professional guiding your rehab a clear, measurable picture of your alignment, so they can tailor their approach.

ScanAlign is a diagnostic imaging clinic. We do not provide treatment. But the imaging we produce gives your physiotherapist, osteopath or surgeon the detailed alignment data they need to plan well. Learn more about how hip and pelvic alignment is assessed.

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

Frequently asked questions about anterior pelvic tilt