Mitchell Quick Release Spring Assist Dobbs Bar
The Mitchell Spring Assist Dobbs bar will only fit Mitchell Ponseti© AFO footwear and features the ‘Quick Clip’ system for use with Mitchell Ponseti© AFO footwear.
A spring reset brings the child's feet back to neutral in a resting position. The spring maintains an active dorsiflexion stretch while still allowing the child to play and crawl in the brace. The Spring Assist Dobbs bar is dynamic, it allows children to move their feet independently whilst maintaining abduction. The Dobbs Bar motion is an up and down pedalling motion (not a forward stepping motion); as such, they are not intended for walking.
Two sizes:
Small for shoulder width of (15.25cm – 22.86cm)
Regular for shoulder width of (22.86cm – 35.56cm).

The width of the bar should be set so that the gap between the shoes is equal to the shoulder width of the child. The regular size bar is recommended if the shoulder width of the patient is greater than 20cm, note below information from the manufacturer's website: http://www.dobbsbrace.com/faq
The Small bar adjusts from 6 to 9 inches (15.25 cm to 22.86 cm) and the Regular bar adjusts form 9 to 14 inches (22.86 cm to 35.56 cm). The Dobbs bar should be set so that the width of the bar is equal to the shoulder width of the child. Due to the difference in spring tension between a small and regular size bar, we recommend that children under 12 months of age be in a small size bar with the lighter spring tension and children over 12 months use the regular size bar with the heavier spring tension.
WARNING: A regular size bar should not be placed on a child under the age of 12 months. The spring tension in a regular size bar is much heavier than in a small size bar and could overpower the child's feet causing pressure on the skin.