Bio Dynamic Technologies




Because the world isn’t flat.

In 2006, we debuted the original Proprio Foot. Featuring motorized ankle flexion, the goal was simple: to reduce trips and falls. It was a hit, winning the prestigious Red Dot design award and spawning an entire new product category. However, since our ultimate goal is to replicate the function of the human foot, there is always room for improvement.

In redesigning Proprio Foot, we first enhanced the safety and stability features that made the original so great for low-to-moderately active users in the first place. Next, we incorporated a Pro-Flex LP foot module to provide 44% more toe-off power. Add usability improvements — like single-button functionality and an integrated battery — and we’re one giant step closer to our goal.

Safety first. The new Proprio Foot adapts to varied terrain 60% faster than the previous model, helping users walk naturally and comfortably on a variety of everyday terrain, including stairs and ramps. It also features 4° of active swing phase dorsiflexion, contributing to a 70% reduction in falls.

The power of Pro-Flex. The new Proprio Foot is built on a Pro-Flex LP foundation. As a result, it delivers a 44% increase in toeoff power and a 23% increase in ROM (of the underlying carbon fiber foot) over the previous model. It also provides reduced sound side loading.³

It’s so easy! Automatic setup makes customizing Proprio Foot for each user’s unique gait simple. Plus, the new Proprio Foot features a sleek new design with an integrated battery that provides 18-36 hours of use. A single button makes it easy to see the battery charge level and align the ankle for different footwear with up to 2” (5 cm) of heel height.

No umbrella? No problem! Don’t worry If you get caught in the rain or splashed by sprinklers, because Proprio Foot is weatherproof and appropriate for use in wet and/or humid environments.

Product Description

PROPRIO FOOT is an adaptive microprocessor controlled ankle for low to moderately active amputees

Motor-powered ankle motion increases toe clearance in swing phase by raising the forefoot, reducing the risk of trips and falls

It also adjusts the ankle angle to changing terrain, providing enhanced gait quality on stairs and inclined surfaces

Key Features

  • Increased toe clearance in swing
  • Automatic terrain adaptation on level-ground, ramps and stairs
  • Dynamic carbon foot blade with exceptional roll-over characteristics
  • Relax-mode for comfortable sitting and chair-exit-mode for easier sit transfers
  • Integrated battery
  • Weatherproof
  • Accompanying Össur Logic app for iOS devices provides: Simple practitioner setup and adjustments, and printable user activity reports, user adjustable ankle alignment for changing footwear and selection of user preferences and monitoring of step count and battery charge level

PROPRIO FOOT® – Jon DeChambeau’s Story</>


The new PROPRIO FOOT® by Össur