Uneven Shoulders: What Causes Them and How Do You Find Out Why?
You have uneven shoulders when one shoulder sits clearly higher or further forward than the other. The cause is rarely in the shoulder itself. It usually starts lower down, in the spine, pelvis or hips. The shoulder simply adapts to keep your head level. A standing whole-body image can show where the real imbalance begins.
Key takeaways
- One shoulder higher than the other is common and usually painless at first. But it can be a sign of an alignment problem elsewhere in your body.
- Causes range from curves in the spine (including scoliosis) to a tilted pelvis or one leg being longer than the other.
- Scans taken lying down can miss alignment problems because gravity is taken away. Standing imaging shows your body as it really works.
- An EOS standing scan captures your full skeleton from head to feet in one low-dose image, using about 90% less radiation than a standard X-ray.
- ScanAlign provides diagnostic imaging only. Any treatment plan comes from your treating clinician.
How can you tell if your shoulders are uneven?
You might notice it in a mirror, in photos, or when your clothes hang differently on each side. Sometimes someone else points it out before you see it yourself. These are the most common signs.
The most obvious sign. You may see it when you face a mirror straight on.
One blade may stick out more or sit higher than the other. You can see this from behind.
Bag straps slip off one side, necklines shift, or a hem hangs at an angle.
Muscles on one side work harder to make up for the imbalance. Over time this can lead to tension or stiffness.
Why is one shoulder higher than the other?
The most common reason is that something below the shoulders is out of alignment. Your body is very good at adapting. If the spine curves to one side, or the pelvis tilts, the shoulders adjust to keep your eyes and head level. This compensation is what makes the shoulders look uneven.
These are some of the most common underlying causes.
A sideways curve of the spine is one of the best-known reasons for one shoulder sitting higher than the other.
If one side of the pelvis is higher, the spine shifts sideways and the shoulders follow.
Even a small difference can tip the pelvis. This sets off a chain reaction all the way up to the shoulders.
Years of carrying a bag on one side, sitting in a twisted posture, or favouring one hand can create a lasting imbalance.
Can uneven shoulders be caused by something in your hips or legs?
Yes. Your body works as a connected chain from your feet to your head. If one link moves out of place, everything above and below adjusts. A tilted pelvis makes the spine curve. A curved spine makes the shoulders uneven. Uneven shoulders make the neck muscles work harder. This is called compensation. It is why pain often shows up far from where it really starts.
It is also why looking at just one area, such as the shoulder joint alone, can miss the real problem. A shoulder scan might look completely normal, even when the underlying alignment problem is in the lower spine or pelvis.
Want to see how your whole alignment connects? ScanAlign captures your full skeleton in one standing image.
Learn about whole-body EOS imagingHow is shoulder alignment checked while you are standing?
It is checked with an EOS standing scan. This captures your full skeleton while you stand in your natural posture. This matters because imaging done lying down, such as a standard X-ray, CT or MRI, removes the effect of gravity. Your muscles relax, your curves flatten out, and the alignment shift behind your uneven shoulders may not show at all.
A standing EOS image shows every link in the chain at once. Your radiographer and clinician can trace the line from your feet through your knees, hips, pelvis and spine up to your shoulders. They can see exactly where the compensation starts and how it travels upward.
The EOS system uses about 90% less radiation than a standard X-ray, around ten times less. It takes only a few seconds to capture the full image, and there is no enclosed tunnel.
When is MRI better? EOS shows bones, joints and alignment clearly. If your clinician suspects a soft-tissue problem, such as a rotator cuff tear, a disc problem, or nerve compression, MRI is usually the better tool. The two types of imaging often work well together.
What can help with uneven shoulders?
The right approach depends entirely on what is causing the unevenness. That is why an accurate diagnosis comes first. Once the cause is clear, these are some of the options a clinician may consider.
- Targeted physiotherapy. Strengthening weaker muscles and stretching tighter ones can slowly improve balance, especially when the problem is mostly muscular.
- Dealing with a pelvic tilt or leg-length difference. If the root cause is lower down, a clinician might look at orthotics, manual therapy, or other approaches to level the foundation.
- Posture awareness. Simple changes to how your desk is set up, how you carry bags, or how you sleep may reduce further strain.
- Specialist referral. Where a spinal curve or structural problem is involved, your clinician may refer you to an orthopaedic or spine specialist for further assessment.
ScanAlign does not provide treatment. It provides the detailed standing alignment imaging that helps your clinician choose the right course of action. You can learn more about how spinal alignment is assessed.
Before you start 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.
Important. If you have sudden weakness in your arms or hands, numbness spreading into both arms, or loss of bladder or bowel control along with your shoulder or back symptoms, get urgent medical help. Contact your doctor or go to your nearest emergency department straight away.
Frequently asked questions about uneven shoulders
The most common reason is that something below the shoulders, such as a spinal curve, a tilted pelvis, or a leg-length difference, has shifted your alignment. The shoulder adjusts to keep your head level.
Yes. One shoulder sitting higher than the other is one of the visible signs of scoliosis, a sideways curve of the spine. A standing image of the full spine can confirm whether a curve is there and how it affects your overall alignment.
It depends on the cause. If the unevenness is mainly muscular, targeted stretching and strengthening may help. If there is a structural problem in the spine or pelvis, exercises alone may not fully address it. Getting the right imaging first helps guide the right approach.
No. ScanAlign is a self-pay clinic, so you can book directly without a referral. You start with a free video consultation to make sure the scan is right for you.
An EOS scan uses about 90% less radiation than a standard X-ray, around ten times less. You can read more about safety on our FAQs page.
An EOS scan captures your whole skeleton from head to feet in one image while you stand. A normal X-ray usually focuses on one small area and is often taken lying down. This relaxes your muscles and can hide alignment problems that only appear when you are bearing weight.
Yes. A tilted pelvis shifts the base of the spine sideways. The spine compensates by curving, and the shoulders adjust in response. This chain reaction is one of the most common reasons for uneven shoulders.
The price for patients travelling from abroad is confirmed during your free video consultation, and you can find more answers on our FAQs page.
Either approach can work. Some people start with physiotherapy and get imaging if progress stalls. Others prefer to understand the full picture first, so treatment can be targeted from the start. A free video consultation with ScanAlign can help you decide which makes sense for you.
Yes. Because the EOS scan captures your full skeleton in one standing image, it can assess your hips, knees and overall leg alignment at the same time as your spine and shoulders. You can learn more about hip alignment imaging or knee alignment imaging.
See the full picture of your alignment
A free video consultation helps you find out whether a standing EOS scan in London is the right next step for your uneven shoulders.
Book a free video consultationWritten by Abbas Dhami (Specialist Diagnostic Radiographer)
Sources
- NHS. "Scoliosis." nhs.uk, 2023. Overview of causes, signs and management of spinal curvature.
- Illés, T. et al. "The EOS imaging system and its uses in daily orthopaedic practice." International Orthopaedics, 36(7), 2012, pp. 1405-1411.
- Dubousset, J. et al. "EOS: A new imaging concept." Revue de Chirurgie Orthopédique et Réparatrice de l'Appareil Moteur, 91(5 Suppl), 2005, pp. 13-25.
This page is general information and not a diagnosis.
ScanAlign is the trading name of CoreMed Solutions Ltd and operates under The Harley Street Hospital's CQC licence.