Can Bow Legs Be Corrected in Adults? What PT Can and Can't Do

I need to be upfront about something: if you are looking for a miracle cure that is going to straighten out significant bow-leggedness, physical therapy is not it. And anyone who tells you otherwise is either overselling or does not understand the anatomy.

But here is what I can tell you after working with dozens of patients who have genu varum, the clinical term for bow legs: even when we cannot change the bone structure, we can often dramatically improve how you move and feel.

Let me explain the difference. Written by Dr. Rob Letizia, PT, DPT, at Spectrum Therapeutics in Wayne, New Jersey, where patients from across Northern New Jersey are treated one-on-one.

The same thing goes by a lot of names. Bowleggedness, bow-leggedness, bowlegs, bowed legs, bent legs, crooked legs — and genu varum, or varus alignment, in a clinical note. Searches for “bowlegs treatment” and “bow leg correction” are asking the same question this page answers, so use whichever word you came here with.

Can bow legs be corrected in adults?

Not by exercise, and this is the answer worth having before you spend money on anything.

In an adult, the growth plates have closed. The curve is in the shape of the femur or the tibia, and bone shape does not respond to stretching, strengthening, manual therapy, braces sold online, or any programme of any length. The only thing that changes adult bone alignment is surgery — an osteotomy, where the bone is cut and realigned.

That is the honest ceiling. What follows is the part that is genuinely worth your time: in most adults who walk in with bowed legs and pain, the curve is not what is hurting. What the body started doing to work around the curve is what is hurting, and that part responds well.

How to correct bow legs in adults

Search how to fix bow legs and you will be sold programmes, braces and stretches. There are only two honest answers, and which one applies depends on what you are actually trying to fix.

To change the shape of the leg, there is one route: surgery. An osteotomy cuts and realigns the bone. No exercise, stretch, brace, insole or programme does this in an adult, because the growth plates have closed and the curve is in the bone itself.

To fix the pain, the route is almost always the compensations, not the curve. That is the part that responds, and it responds well — restoring hip stabiliser and adductor function, taking the lateral pull off the IT band and TFL, and retraining how the leg is loaded when you walk.

Which is why the useful first question is not "how do I fix my bow legs" but "which of those two am I actually asking about". Most people who arrive here are in pain and assume the curve is the cause. Usually it is not.

Bow leg correction: what each option actually changes

If you are searching for bow leg correction, bowlegs treatment, or how to get rid of bow legs, this is the whole menu in one place. Everything below is already covered in more detail further down the page; the table is here so you can see which route answers your question before you read any further.

So: to change the shape, there is one route, and it is surgical. To change the pain, the route is almost always the compensations — and that is the part that responds well.

What causes bow legs in adults?

True bow-leggedness is usually skeletal, meaning the actual shape of your femur or tibia has a curve to it. That can come from how the bones developed in childhood, from rickets (rare now), from a previous fracture that healed with a change in alignment, or from conditions such as Blount's disease.

There is also a second route that catches people out in middle age: the curve that develops later. Wear on the inner compartment of the knee narrows that side of the joint, and as it narrows the leg progressively angles outward. In that version the bow is a consequence of the joint rather than a birth trait, and it tends to worsen slowly. It is the version most worth having looked at, because it is the one that is going somewhere.

I had a patient come in, a former college football player in his forties, who had always had bowed legs. He had seen the ads online promising to fix it with exercises, and spent months on a programme he found on YouTube. Same curve at the end of it, now with added knee pain from all the odd exercises.

When I evaluated him, yes, his bones were bowed. But that was not really his problem.

People call it different things and they all mean the same shape: bow legs, bowed legs, crooked legs, bandy legs, O legs, or clinically genu varum. The same question gets searched as how to fix bowed legs, how to fix crooked legs, how to fix O legs and how to fix bandy legs — same shape, same answer, and none of the names change it.

Can you fix bow legs with exercise?

You cannot straighten the bone with exercise. You can change a surprising amount of everything else.

Here is what I see far more often than the dramatic structural case: someone with mild to moderate bow-leggedness who has developed compensatory movement patterns that are making things worse.

Your body is efficient. When the knees angle outward, everything else adjusts to keep you upright and moving. Usually that means:

• The IT band gets overworked trying to stabilise the leg from the outside
• The inner thigh muscles, the adductors, effectively check out
• The glutes stop firing properly, gluteus medius in particular
• The hip starts rotating oddly through the walking cycle
• The foot compensates, often supinating — rolling outward

Over time those compensations create their own problems: pain on the inner joint line of the knee, hip soreness, IT band irritation, sometimes low back pain. That list is entirely treatable, and none of it requires the bone to change.

So the honest version of the answer is: exercise does not fix the shape of your legs, and it is often the only thing that fixes the pain in them.

The Curve-or-Compensation Test

Before any programme, the question I am actually answering at an evaluation is this one: is the curve the thing hurting you, or is it what your body started doing to work around the curve? I call it the Curve-or-Compensation Test, and it decides everything that follows, because the two answers lead to completely different places — one to a surgeon, one to a training plan.

Three things separate them.

1. Where the pain sits. Pain that lives deep in the inner compartment of the knee, worse the longer you are on your feet and worse going downhill, points at the joint itself — the curve. Pain on the outside of the hip or thigh, along the IT band, or across the low back after walking points at the compensation.
2. What it does with rest. Compensation pain settles with a day or two of relative rest and comes back when the same pattern resumes. Joint-surface pain tends to be more constant and stiffer first thing in the morning.
3. What happens under a corrected pattern. This is the useful one and it takes about ten minutes in a clinic. If cueing your hip to control the knee — even crudely, even for one repetition — changes what you feel, the compensation is carrying a meaningful share of the pain. If nothing changes at all, the joint is doing more of the talking, and that is a conversation to have with an orthopedic surgeon.

Most adults come out of that test somewhere in the middle, with both contributing. That is a good outcome, not a fudge: it means there is a real amount of pain available to be removed without touching the bone.

What exercises actually help bow legs?

When someone comes in with bow-leggedness and pain, I am not trying to straighten their legs. I am trying to improve how they move within the structure they have.

First, I watch them move. Walk down the hall. Single-leg balance. Squat if they can. I am looking for where the compensation patterns are. Is one hip dropping? Is the weight shifting oddly? How is the foot striking the ground?

Then we work on what is weak. Usually the hip stabilisers, gluteus medius especially, and the inner thigh muscles. These are the ones that control how the knee tracks during movement. When they are stronger and firing correctly, the knee tracks better even though the bone still has its curve.

Side-lying hip abduction. Copenhagen planks for the adductors. Single-leg deadlifts for functional hip control. Not exciting exercises, but they are the ones that do the work, and they are done slowly and with attention rather than for repetitions.

We also address what is tight. The IT band itself does not stretch much, but the TFL and the lateral hip structures get chronically overactive, and so does the outside of the calf. Reducing that lateral pull is achievable.

Finally, we retrain the movement pattern. This is the part that takes longest and matters most: walking with better weight distribution, squatting without the knees diving outward, running with more efficient mechanics. The nervous system needs time to relearn those patterns.

What to be sceptical of: any programme promising visible straightening, any device or brace marketed to adults for realignment, and any exercise that produces sharp inner-knee pain. That last one is not a programme working hard; it is the joint surface objecting, and it is a reason to stop and get assessed.

What Physical Therapy Can and Cannot Change

This is the honest version of the answer, and it is worth having before you spend money on anything — a program, an insert, or a consultation.

So the useful question is not “can my legs be straightened.” It is “is the curve the thing hurting me, or is it what my body started doing to work around the curve?” In most adults walking in with bowed legs and pain, it is the second one — and that is the part that responds.

How much change can I realistically expect?

With the former football player, we spent about eight weeks working on hip and core stability. His legs still looked bowed; they always will. But his knee pain dropped from a 7/10 to about a 1/10 on bad days, and he could play with his kids again without limping afterwards.

That is realistic success. Not a before-and-after photograph, but an actual change in what the day feels like.

Some people do see a minor change in appearance as muscle balance improves and standing posture shifts — the knees coming closer together by perhaps half an inch when standing still. That is a postural change, not a structural one, and it is the honest limit of what to expect. If someone is promising a dramatic visual change through exercise alone, be sceptical.

How to fix bow legs in adults without surgery

No. In an adult, straightening the leg means changing the bone, and changing the bone means an osteotomy — the bone is cut and realigned, usually with a plate. These are real operations with real recovery times, and for the right patient they are worth it, particularly where the alignment is driving wear in one compartment of the knee.

The right patient is usually someone with significant bowing, pain that has not responded to conservative treatment, or a bow that is measurably progressing. That is an orthopedic surgeon's decision, not mine, and it is worth having the conversation early rather than after another two years of walking on it.

Physical therapy has a real place around that decision on both sides: preparing the leg beforehand, and rebuilding it afterwards. What it is not is a substitute for the operation when the operation is the answer.

How do I know if my bow legs are getting worse?

Childhood bow legs generally straighten on their own; adult bow legs generally do not change quickly. So change itself is the signal worth watching, and these are the ones to act on rather than monitor:

• The gap between your knees is visibly increasing over months or a year, standing with your feet together.
• Pain has moved from the outside of the leg to deep inside the knee, and is worse the longer you are upright.
• One leg is changing and the other is not. Asymmetric progression in an adult deserves imaging rather than exercises.
• The knee is swelling, catching or giving way. That is a joint problem, not an alignment problem, and it needs assessing.
• Night pain, or pain at rest. These are red flags in any joint, and they are a reason to see a physician rather than a physical therapist first.

In a child, the picture is different and the thresholds are different too — bowing that is worsening after about the age of two, that affects one leg much more than the other, or that comes with a short stature belongs with a paediatrician promptly. Blount's disease is uncommon but it is the reason nobody should be told to simply wait and see indefinitely.

Started with an AI assistant? Bring the plan in.

"Can bow legs be fixed" is a question people ask ChatGPT, Gemini, Claude or Copilot before they ask anybody else, and the general answer they get back — that adult bone shape does not change with exercise — is correct. Where an assistant cannot help is the part that decides what you actually do: whether your pain is coming from the curve or from the compensations around it, whether the bow is stable or progressing, and whether the exercise list you were handed is loading the joint surface that is already the problem.

Bring the plan you were given. We will run the Curve-or-Compensation Test on it, tell you what is worth doing, and tell you plainly if the honest answer is a surgeon rather than us.

Have your rehab plan checked →

Common questions

How do you fix bow legs in adults?

Two different answers depending on what you mean. To change the shape of the leg there is only surgery — an osteotomy — because in an adult the curve is in the bone and the growth plates have closed. No exercise, brace or insole reshapes adult bone. To fix the pain, the answer is almost always the compensations built up around the curve rather than the curve itself, and that part responds well.

Can bow legs be corrected in adults?

Not with exercise. Once the growth plates have closed the curve is in the shape of the bone, and bone shape does not respond to stretching, strengthening, manual therapy or bracing. Surgical realignment — an osteotomy — is the only thing that changes adult alignment. What does respond, and often substantially, is the pain caused by the compensations built up around the curve.

Can you fix bow legs with exercise?

Exercise will not change the shape of the leg. It frequently is the thing that fixes the pain in it, by restoring hip stabiliser and adductor function, reducing the lateral pull through the IT band and TFL, and retraining how the leg is loaded when you walk. Judge a programme on whether your pain and function change, not on whether the gap between your knees changes.

Do bow legs get worse with age?

They can, when the bowing is driven by wear in the inner compartment of the knee rather than by childhood bone shape — narrowing on that side lets the leg angle further outward, which loads that side harder still. A bow that is visibly increasing, or that has started hurting deep inside the knee, is worth having imaged rather than monitored.

What exercises help bow legs?

Hip abductor work such as side-lying hip abduction, adductor work such as Copenhagen planks, and single-leg loading such as single-leg deadlifts, all done slowly and with attention to how the knee tracks rather than for repetition counts. Alongside those, gait retraining is what makes the strength show up in daily walking. Stop and get assessed if any exercise produces sharp pain on the inner joint line.

Are braces or insoles worth trying for adult bow legs?

Braces marketed for straightening adult legs do not work, because there is nothing an external device can do to remodel adult bone. Offloading braces and footwear changes are a different question — they aim to shift load away from a painful compartment rather than to realign the leg, and they are worth discussing when inner-knee pain is the main complaint.

Should I see a physical therapist or a surgeon for bow legs?

Start with a physical therapist if the pain is on the outside of the hip or thigh, if it settles with rest and returns with activity, or if you have never had the movement pattern assessed. See an orthopedic surgeon first if the bowing is significant or progressing, if pain sits deep inside the knee and is present at rest or at night, or if the knee swells, catches or gives way.

Does bow-leggedness cause knee arthritis?

Alignment influences how load is distributed across the knee, and a leg that angles outward puts more of it through the inner, or medial, compartment. That is why a progressing bow with inner-knee pain is treated as a joint question rather than a cosmetic one, and why an orthopedic opinion is the right next step rather than a longer exercise programme.

The bottom line

Can physical therapy fix bow-leggedness? It depends what you mean by fix.

Change the bone structure? No. Improve your movement quality, reduce the compensation patterns, decrease the pain and help you function better in the body you have? Yes, and usually more than people expect.

If you have bowed legs and you are dealing with hip or knee pain, it is worth getting evaluated. We may not be able to give you straight legs, but we can usually help you move and feel a great deal better — and if the honest answer is that you need a surgeon, we will tell you that instead.

Spectrum Therapeutics of NJ
601 Hamburg Turnpike, Suite 103
Wayne, NJ 07470

Phone: (973) 689-7123
Email: spectrum@spectrumtherapynj.com
Web: spectrumtherapynj.com

Related Services at Spectrum Therapeutics

• See our knee rehabilitation programs
• See our hip rehabilitation services
• Explore our lower back and spine treatment
• Learn how shockwave therapy targets stubborn knee pain

Questions? Call (973) 689-7123 or schedule your appointment online.