Why do I always get injured on the same side? ScanAlign private EOS imaging clinic, Harley Street, London
Symptom guide

Why Do I Always Get Injured on the Same Side?

When injuries keep coming back on one side, it usually means that side is carrying more load than the other. A subtle difference in leg length, a tilt in the pelvis or a shift in the spine can make one hip, knee or ankle work harder. Finding and measuring that imbalance is the first step to breaking the cycle.

Key points

  • One-sided injuries are rarely bad luck. They usually point to a structural or alignment cause.
  • Your body works as a connected chain. A tilt at the pelvis can overload a knee or ankle below it.
  • Scans taken lying down can miss alignment problems, because gravity is taken out of the picture.
  • A standing, full-body image shows both sides in one picture, so the difference can be measured precisely.
  • Diagnosis comes first. A clear picture helps your clinician target the real source, not just the symptoms.

What does it mean when you keep getting injured on one side?

It means one side of your body is taking more force than it should. If your skeleton were perfectly symmetrical, each leg, hip and shoulder would share the load roughly equally. But very few people are perfectly symmetrical. Even a small difference, one you cannot see in the mirror, can tip the balance.

Over time, the overloaded side wears down faster. You might pull a calf muscle, get a sore knee or strain a hip flexor, and it is always the same leg. You recover, go back to your activity, and the same thing happens again. The injury heals, but the reason it happened has not been dealt with.

Why do I always get injured on the same side? ScanAlign clinic illustration

What are the signs that one side of your body is taking more strain?

The signs are often things you have noticed for years but never linked together. These are the most common patterns.

Repeated strain in one leg

You always pull the same calf, hamstring or Achilles, even after full rehab.

Shoe wear on one side

One shoe sole wears down faster, especially on the outer or inner edge.

One hip or knee always aches

After running, walking or sitting for a while, it is always the same joint that stiffens.

One shoulder sits lower

A friend or trainer has told you your shoulders are uneven, or your clothes hang unevenly.


What causes one-sided injuries to keep coming back?

Injuries that keep returning on the same side are rarely caused by a single event. They are almost always driven by a structural or postural factor underneath that has never been identified. The most common causes are below.

Difference in leg length

Even a small leg length discrepancy tilts the pelvis and shifts load to the longer side.

Pelvic tilt or rotation

A tilted pelvis changes how force travels through the hip joints and down each leg.

Curve in the spine

A sideways curve in the spine moves the trunk off-centre, adding load to one side of the body.

Muscle imbalance

When a muscle imbalance develops, the weaker side gives way first under load.


How can a problem in one area cause injury somewhere else?

Your body is a connected chain from your feet to your head. When one link is slightly off, the links above and below it make up for it. A tilted pelvis, for example, may not cause hip pain at all. Instead, it makes the knee below it twist slightly inwards with every step, and that knee is the one that keeps getting injured.

This is why treating only the painful area often fails. The injury heals, but the tilt stays, so the same pattern repeats. The real cause and the pain are in different places.

A proper gait analysis or full-body alignment assessment can trace these links and show exactly where the chain breaks down.

Wondering if alignment could be behind your pattern? A free video consultation lets you talk through your history from home before you decide on a scan or plan a trip to London.

Book a free video consultation

Why do lying-down scans miss alignment problems?

Standard X-rays, CT and MRI scans are usually taken while you lie flat. In that position, gravity is taken away, your muscles relax and your joints settle into a neutral shape. Any tilt, twist or shift that shows up when you stand and bear weight simply disappears from the image.

A standing, weight-bearing scan shows your skeleton the way it actually works: under load, with gravity pulling on every joint. Both legs appear on the same image, so a difference in leg length, a pelvic tilt or uneven hip height can be measured directly instead of estimated.

Shows your body under load. You stand naturally while a low-dose image is taken from head to foot. Both sides are visible in one picture, so left-to-right differences are measured precisely. The EOS system uses about 90% less radiation than a standard X-ray, around ten times less.

Takes gravity out of the picture. Lying flat relaxes your muscles and lets your pelvis settle into a neutral position. A tilt or rotation that causes problems in upright posture under load may not appear at all. Each body part is usually scanned separately, which makes comparing the two sides harder.

At ScanAlign, full-body standing imaging captures your whole skeleton in one upright scan, giving your clinician a complete map of your alignment from feet to skull.

When is MRI more useful? EOS shows bones, joints and alignment. For soft-tissue problems such as disc injuries, ligament tears or nerve compression, MRI is usually the better tool. If your clinician suspects a soft-tissue cause, they may recommend MRI instead of, or along with, a standing scan.


What can be done once the imbalance is found?

The answer depends on what the scan shows. ScanAlign is a diagnostic imaging clinic, not a treatment provider. The scan and report give you and your clinician the information needed to make the right decision. Common next steps might include targeted physiotherapy, a heel lift or orthotic, a change in training load, or a referral to an orthopaedic specialist.

The key point is this: without accurate, weight-bearing measurements, any treatment is based on guesswork. A clear picture of the imbalance turns guesswork into a plan.

So 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.

A standing scan may help if you
  • Keep injuring the same leg, hip or knee
  • Have been told one leg is shorter
  • Notice uneven shoe wear or a lopsided posture
  • Have had several courses of physiotherapy with no lasting result
Seek urgent medical advice if you have
  • Sudden numbness or weakness in an arm or leg
  • Loss of bladder or bowel control
  • Severe pain after a sudden injury or fall
  • Contact your doctor or go to the nearest emergency department immediately

Frequently asked questions

Repeated injuries in one leg usually mean that leg is carrying more load. A difference in leg length, a pelvic tilt or an alignment shift can make one side work harder. This makes it more prone to strain and overuse.

Yes. Even a subtle difference can tilt the pelvis and change how force travels through the hip, knee and ankle on that side. Over hundreds of thousands of steps, the effect adds up.

Some degree of asymmetry is very common. Problems start when it is large enough to shift load unevenly and the body can no longer make up for it without strain.

Standard X-rays are usually taken lying down and focus on one body part at a time. This takes gravity away and makes it hard to compare both sides or see how the whole skeleton lines up under load.

It is an X-ray taken while you stand naturally. The EOS system captures your whole skeleton, from head to feet, in one image with about 90% less radiation than a standard X-ray, around ten times less.

No. ScanAlign accepts self-referrals. You can book a full-body standing scan directly, starting with a free video consultation to discuss your situation.

The price for patients travelling from abroad is confirmed during the free video consultation, and you can find more answers on our FAQs page.

The EOS system uses about 90% less radiation than a standard X-ray, around ten times less. It is one of the lowest-dose skeletal imaging systems available.

No. A standing scan shows bones, joints and alignment. For soft-tissue problems such as ligament tears, disc injuries or nerve problems, MRI is usually the better tool.

You receive a detailed report with your alignment measurements. You can share it with your physiotherapist, osteopath or orthopaedic surgeon back home, so they can plan treatment based on accurate, weight-bearing data.


Stop guessing. See the full picture.

A free video consultation lets you discuss your injury pattern with a specialist radiographer from home, before you commit to anything.

Book a free video consultation

Written by Abbas Dhami (Specialist Diagnostic Radiographer)

Sources

  1. Khamis, S. & Yizhar, Z. (2007). Effect of feet hyperpronation on pelvic alignment in a standing position. Gait & Posture, 25(1), 127-134.
  2. Gurney, B. (2002). Leg length discrepancy. Gait & Posture, 15(2), 195-206.
  3. NHS. (2023). Back pain: causes, treatment and prevention. NHS website. Available at: nhs.uk/conditions/back-pain.

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.