Cascade Supplier Partner: Product Highlight – WillowWood META® Arc and Flow
WillowWood’s META® Arc and META® Flow are key members of the groundbreaking META® Family, built on the patented META-Unibody® Platform. These feet feature an advanced biomimetic, polycentric ankle design that quickly adjusts to different terrains, promoting natural movement and offering exceptional stability. Made from energy-efficient carbon composite materials, both models provide smooth propulsion and dynamic response for a more fluid, confident stride. Whether navigating uneven ground or slopes, the META Arc and META Flow deliver outstanding balance, performance, and mobility.
META Arc
The META® Arc is a moderate- to high-activity carbon fiber foot featuring the industry’s first integrated, ankle joint that mimics the movement of an ankle. This polycentric ankle provides immediate adaptation across the widest range of ankle motion for unparalleled inversion and eversion. The innovative design decouples ground reaction forces, reducing forces on the residual limb for natural-feeling stability.



Enjoy the perfect balance of performance and efficiency with a lightweight, responsive spring frame that provides more than 95% energy return. Featuring a split keel for enhanced stability and optimal ground contact on a variety of terrains.
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The Arc Advantage

Ankle ROM: 10° inversion; 10° eversion; 6mm each direction, medial and lateral translation
Lightweight Design: Weighs only 720g for easy portability and comfort
Molded from just one piece of carbon fiber, eliminating bolts, dead spots, and weight for unrelenting performance
META Flow
The META® Flow™ is the first PDAC-approved L5968 foot that eliminates the compromise between range of motion and dynamics. Its design integrates the advantages of the META Unibody® platform with an innovative polycentric ankle and a carbon composite ankle spring. This unique L5968 foot is the only one that delivers energy during midstance, offering users exceptional rollover and freedom from the dampening effects seen in hydraulic designs.



Thanks to its innovative design, users experience a smooth, natural gait on various terrains and at different cadences, while active swing-phase dorsiflexion helps reduce the risk of falls. With no hydraulic fluid required, the design eliminates leaks and decreases the need for frequent maintenance.
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The Flow Advantage
95% energy efficient – only design that eliminates dampening effect, provides power to propel user through mid-stance
Delivers 14º Ankle RoM (9º plantarflexion + 5º dorsiflexion)
Significantly reduces fall risk via 5º active dorsiflexion during swing phase

Specifications Breakdown
| META Arc | META Flow | |
| Activity Level | K3 | K3, K4 |
| Foot Size | 22-30 cm | 22-30 cm |
| Waterproof/Corrosion Resistant | Yes | Yes |
| Weight Limit | 365 lbs | 365 lbs |
| Trial Period | 60 days from date of patient fitting | 60 days from date of patient fitting |
| Warranty | 36 months from fit date | 36 months from fit date |
| PDAC Approved | L5981 + L5986 | L5981 + L5968 |
For more information about the entire META® family, including the META® Flow™ and META Arc prosthetic foot, visit our website or ask your Cascade Account Manager today!
