The Ossur Carbon Fiber AFO Light is the #1 doctor-recommended carbon fiber AFO that provides excellent support where needed, eliminating unnecessary bulk while delivering a cosmetically appealing, low-profile design. Utilizing Flex-Foot technology and the energy-storing properties of carbon fiber, the AFO Light offers a strong and lightweight solution for people with mild to moderate drop foot.
Carbon Fiber Technology: Carbon fiber is an extraordinarily strong polymer material that is five times stronger than steel yet twice as stiff, while remaining extremely lightweight. The thin, strong crystalline filaments create a spring-like action that aids the foot in dynamic motion, providing energy return during walking.
Returns due to fit issues are common with AFO braces. Please take time to measure carefully and review our comprehensive fit guide before ordering.
📖 Read Our Complete AFO Comfort & Fit Guide →
Learn how to prevent pain, pressure points, and shoe problems
Many customers who purchase the AFO Light find they wish they had chosen the AFO Dynamic instead.
See why most customers prefer the AFO Dynamic for better comfort and performance
Primary Measurement (Required): Measure the circumference of your calf at its widest point. Use a flexible tape measure and wrap it around your calf muscle. This measurement determines your size (Small, Medium, Large, X-Large).
These measurements help ensure the AFO will fit your leg length and foot size properly:
| Small | Medium | Large | X-Large | |
|---|---|---|---|---|
| Part numbers | ||||
| Right Leg | O-121012 | O-121014 | O-121016 | O-121018 |
| Left Leg | O-121022 | O-121024 | O-121026 | O-121028 |
| Shoe size (US) | ||||
| Male | Up to 7.5 | 8–10.5 | 11–14 | 12–15 |
| Female | 7–9 | 9.5–12 | — | — |
| Foot size | 8.75–9.5" (22–24 cm) | 9.5–10.5" (24–27 cm) | 10.5–11.5" (27–29 cm) | 11.5–12.5" (29–32 cm) |
| Foot plate | 8.75" (22 cm) | 9.25" (23.5 cm) | 10.25" (26 cm) | 10.75" (27.5 cm) |
| Calf height* | 12.5–14.25" (32–36 cm) | 13.5–15" (34–38 cm) | 14.25–15.75" (36–40 cm) | 15–16.5" (38–42 cm) |
| Spring length** | 13.5" (34 cm) | 14.25" (36 cm) | 15" (38 cm) | 15.75" (40 cm) |
| Heel height | 0.6" (1.5 cm) | 0.6" (1.5 cm) | 0.6" (1.5 cm) | 0.6" (1.5 cm) |
| Weight | 2.8 oz (80 g) | 3.15 oz (90 g) | 3.5 oz (100 g) | 3.85 oz (110 g) |
Ideal for: Mild to moderate drop foot
Insurance Reimbursement Code: L1930
Shipping: Ships from NJ or CA warehouse in 1-3 business days based on your location.
With daily use, AFO straps and padding wear out in about 12 months. Don't wait until they fail—order your replacement kit today!
Includes: Strut padding, strut hook-and-loop, shrink tube, calf piece, calf piece padding, light strap, light elastic band, silicone padding kit
Follow these instructions for proper application of your AFO Light brace:
You will need to take it to a Prosthetic and Orthotic clinic. They can custom-cut the carbon fiber to fit properly and address any issues such as rubbing or pressure points. Professional trimming ensures the structural integrity of the carbon fiber is maintained.
Foot drop (sometimes called drop foot) is difficulty lifting the front part of the foot. The most common cause is injury to the peroneal nerve, which controls the muscles that lift your foot. If you have foot drop, the front of your foot might drag on the ground when you walk. Foot drop is not a disease itself—it's a sign of an underlying neurological, muscular, or anatomical problem. Sometimes foot drop is temporary, but it can be permanent.
Foot drop makes it difficult to lift the front part of your foot, so it might drag on the floor when you walk. This can cause you to raise your thigh higher than normal when walking (steppage gait) to help your foot clear the floor. This unusual gait might cause you to slap your foot down onto the floor with each step. In some cases, the skin on the top of your foot and toes feels numb. Depending on the cause, foot drop can affect one or both feet.
Foot drop is caused by weakness or paralysis of the muscles involved in lifting the front part of the foot. Common causes include:
The AFO Light features anterior (front) mounting and is ideal for mild to moderate drop foot up to 220 lbs. The AFO Dynamic has side-mounted support for better comfort, supports up to 265 lbs, includes a full-length toe lever and tapered heel for enhanced energy return, and is less visible in shoes. Many customers prefer the AFO Dynamic for its superior fit and performance. Compare AFO Dynamic here.
You'll need lace-up shoes or boots that are 1-2 sizes larger than your normal shoe size to accommodate the AFO. Athletic shoes with removable insoles work well. Avoid slip-ons, loafers, and shoes with narrow toe boxes. See our complete shoe guide for detailed recommendations.
With daily use, soft goods (straps, padding, Velcro) typically need replacement about once a year, sometimes sooner if you're very active or wash them frequently. Signs it's time to replace: Velcro no longer sticks well, padding is compressed or thin, straps are frayed, or the brace feels loose even when fully tightened.
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