Home › Director's column › Bow Legs · Posture Correction
August 7, 2026

Why Do My Corrected Legs Go Back?

Dr. Nahyun Park
Medically reviewed by Dr. Nahyun Park Associate Director

Key points in 30 seconds

  1. Corrected legs going back is common, and it isn't because you didn't try hard enough.
  2. If your legs are different lengths, your posture falls apart again with every step.
  3. So we support the shorter side first, then work on posture.
  4. Muscles are what hold the corrected position, and muscles are built at home.
  5. We decide together on home exercises that fit your body.

What we often hear

  • "I had my legs corrected, but they went back before long."
  • "It was good back then, but now it's the same as before."
  • "Do I have to keep getting treatment forever?"

Why do my corrected legs go back?

Because daily life undoes the posture set in the clinic. If the support and the muscles stay the same, the body returns to its familiar position with every step.

Right after a correction, things are clearly different. The problem is what happens after you walk out of the clinic. Over thousands of steps a day, the body repeats what it has always done. Between what's corrected twice a week and the walking repeated all week long, it's clear which one wins.

Why do you add support first?

When your legs are different lengths, no matter how well your posture is set, it falls apart again as you walk. So we support the length difference first, then work on posture.

For one person we saw in the clinic, an X-ray and a posture check showed that the right leg was shorter. The pelvis sat at different heights on each side, and body weight was concentrated on one side. So we started by putting a 1 cm lift on the right side.

If the order is reversed, you end up doing the same thing over and over: setting it, watching it fall apart, setting it again.

Are home exercises really necessary?

Yes. What we do in the clinic sets the position; what holds that position is muscle. And muscle is built at home.

This person was good at producing bursts of strength but lacked the endurance to hold the same posture for a long time. So instead of heavy lifting, we built a plan focused on improving the ability to hold posture. The deep core muscles and the buttock muscles were the focus, and we decided together what to do at home.

How long until things change?

In this person's case, they started to notice changes after about a month of visits twice a week plus exercise at home. But it differs from person to person, and how much you do at home makes a big difference.

The first change they mentioned wasn't the shape of their legs but that their body felt lighter. They had said their whole body was stiff and that they were often tired from going to bed late, and that part eased first. After that, they said the difference between left and right movements got smaller and their weight felt more evenly spread across both legs.

What are the limits of this judgment?

Feeling lighter is something the person felt, not a measured value. Feelings can vary with how you're doing on a given day.

Also, to know whether adding support first is truly better, it would have to be compared side by side with cases where only posture was corrected without support. We don't have that comparison data. We are also still collecting records on how things look months or years after correction ends.

We start by finding out why it went back. If the way you walk stays the same, thousands of steps a day will win over what was set in the clinic.

If your legs went back after correction, come see us. Before setting it again, we need to see why it came undone.

When changes appear differs from person to person, depending on the starting condition and how much you do at home.

Have symptoms on your mind?

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Phone: +82-53-716-1175 (within Korea: 053-716-1175)

Dr. Nahyun Park

Dr. Nahyun Park Associate Director

I mainly see problems that start with body alignment and posture. I'm in charge of care that requires looking at the balance of the whole body, such as children's growth, weight loss and recovery after car accidents. I have published meta-analyses on fatigue in international journals. That research experience helps when I see patients whose fatigue doesn't go away no matter how much they rest.

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