The Dobbs bar

A dynamic bar that lets a baby kick each leg independently. The reported compliance gap against a traditional brace is large, 7.1 percent non-compliance against 41 percent, and it costs more, with dorsiflexion harder to hold.

Written by Heath, who has lived it: casts from birth, a fusion at sixteen, the US Army, and distance running.

What it is

A bar that lets the legs move separately

The Dobbs bar, from D-Bar Enterprises in St Louis, allows a child to move both legs independently rather than having them fixed to one another1. It is a bar rather than a complete brace: it is compatible with Mitchell Ponseti or Markell shoes, or with a custom molded solid AFO1.

Two things are consistently reported about it. It is relatively expensive, and dorsiflexion can be difficult to achieve with it1, which matters, because holding the foot dorsiflexed is half of what a foot abduction brace is for.

Does the case for a dynamic bar describe you?

Four questions about the last few weeks, not your best week. This will not choose a brace. It shows whether the reasons people give for a dynamic bar match what is happening at home.

Hours

How often does the brace stay on for the hours the clinic asked for?

In a normal week

Then compliance, the main argument for a dynamic bar, is not your problem.

This is the gap dynamic bars are reported to close: 7.1 percent non-compliance against 41 percent in one series.

Worth saying out loud at the next appointment. Rounded-up hours hide exactly this.

Skin

Has the current brace caused skin trouble?

So far

Nothing to add here.

Worth mentioning to whoever fits the brace.

In the same series, skin lesions ran at 7 percent with the dynamic brace against 23.5 percent with a traditional one. Raise it with the clinic that fits the brace.

Dorsiflexion

Has the clinic said the foot is hard to hold up, dorsiflexed, in the brace?

What you have been told

Good. That is the concern most often raised about dynamic bars.

Ask. It is the question that matters most before changing to a dynamic bar.

Then weigh this carefully. Dorsiflexion is the known weak point of a dynamic bar, and a comfortable brace that is not holding the foot has stopped being treatment.

Cost

Would a more expensive bar be a strain?

Honestly

Then cost is not the deciding factor.

The Dobbs is consistently described as relatively expensive. Ask about coverage before anything else.

Where you land Four questions

Answer for a normal week. Two of these are scored; the other two carry the catches that come with a dynamic bar.

The evidence

The compliance figures are why people use it

A series of 28 patients and 49 feet compared a dynamic abduction brace against a traditional Denis Browne. Non-compliance was 7.1 percent with the dynamic brace against 41 percent with the traditional one, and skin lesions 7 percent against 23.5 percent1. A separate report by Garg and Porter found the same direction: higher compliance, fewer recurrences and fewer skin complications with the dynamic design1.

What it means. If a family cannot keep a fixed brace on, a bar that lets a baby kick is a real answer, and two independent reports point the same way.

What it might mean. Twenty-eight patients is small. Families given a dynamic brace may differ from those who are not. In what they can afford, which clinic they attend, how much help they have at home. Compliance is usually parent-reported, and parents round their hours up.

What nobody knows. Whether the extra cost buys better feet, as opposed to easier nights. Correction was not the endpoint in these comparisons.

The catch

Comfort is not the only thing a brace has to do

The brace holds abduction and dorsiflexion. On the Mitchell the dorsiflexion is built into a heel wedge; on a dynamic bar it is harder to hold1. Raise that directly with whoever fits it, because a comfortable brace that is not holding the correction has quietly stopped being treatment.

The maker of the Mitchell now sells a dynamic bar of its own, the MP-Move, on the same reasoning1. The comparisons above are of other dynamic designs, not of that bar.

Dobbs bar

What is the Dobbs bar?

A dynamic foot abduction bar from D-Bar Enterprises in St Louis that lets a child move each leg independently rather than having them fixed together. It works with Mitchell Ponseti or Markell shoes, or a custom molded solid AFO.

Does the Dobbs bar improve compliance?

The reported figures are striking. In one series non-compliance was 7.1 percent with a dynamic brace against 41 percent with a traditional Denis Browne, and skin lesions 7 percent against 23.5 percent. That series was 28 patients, so treat the size of the gap with some caution.

What is the downside of the Dobbs bar?

Cost, and dorsiflexion. It is relatively expensive, and dorsiflexion can be harder to achieve with it than with a fixed bar. Holding dorsiflexion is half of what the brace is for.

Can I use my existing shoes with it?

It is compatible with Mitchell Ponseti or Markell shoes, or with a custom molded solid AFO. That is a question for your orthotist rather than something to arrange yourself.

Is a dynamic bar better than a fixed one?

On compliance and skin, the published comparisons favor dynamic bars. On whether the feet end up better corrected, nobody has shown that, because correction was not what those studies measured.

Sources

Where this comes from

1 Current concepts on bracing in the Ponseti methodMasquijo JJ, Allende V. Revista de la Asociación Argentina de Ortopedia y Traumatología, 2023;88(2):218 to 223 2 Pressure sores and bracing complications in idiopathic clubfootKollias CM et al. Prosthetics and Orthotics International, 2026. PMID 42149778 3 Clubfoot study guidePediatric Orthopaedic Society of North America

Figures on this page are quoted from the studies cited above and are not this site’s own measurements. Series are small and mostly retrospective, so treat them as a starting point for a conversation with your clinic rather than a verdict on any brace.

The full comparison puts every design side by side. If the fight is nightly rather than mechanical, the bracing guide covers the hours and the step-down.