The Össur 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.
Sizing is based on two measurements: Calf Height and Shoe Size. Do not measure circumference — the velcro strap wraps around the thickest point of your calf, so what matters is the height of that point from the floor, not how wide your calf is.
| 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 |
| Calf Height* — Measure from thickest point of calf to floor | ||||
| Calf Height |
12 1/2–14 1/4" (32–36 cm) |
13 1/2–15" (34–38 cm) |
14 1/4–15 3/4" (36–40 cm) |
15–16 1/2" (38–42 cm) |
| Shoe Size (US) | ||||
| Male | Up to 7.5 | 8–10.5 | 11–14 | 12–15 |
| Female | 7–9 | 9.5–12 | — | — |
| Foot & Plate Dimensions | ||||
| Foot Size |
8 3/4–9 1/2" (22–24 cm) |
9 1/2–10 1/2" (24–27 cm) |
10 1/2–11 1/2" (27–29 cm) |
11 1/2–12 1/2" (29–32 cm) |
| Foot Plate Actual Length |
8 3/4" (22 cm) |
9 1/4" (23.5 cm) |
10 1/4" (26 cm) |
10 3/4" (27.5 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
Inspect straps and padding regularly; replace when worn or no longer secure.
Foot drop is the inability to lift the front part of the foot, causing it to drag on the floor during walking. Common causes include compression or injury to the peroneal nerve, stroke, multiple sclerosis, ALS, Charcot-Marie-Tooth disease, or complications from hip or knee replacement surgery.
Foot drop makes it difficult to lift the front part of your foot, causing it to drag on the floor. This often results in a steppage gait and foot slap when the foot hits the ground. Patients may also trip or stumble more frequently on uneven surfaces.
Measure calf height from the thickest part of the calf straight down to the floor, and use your US shoe size as a second check. Calf height is not calf circumference. Consult an orthotist if the measurements disagree or overlap sizes.
A qualified orthotist should evaluate the footplate and make only manufacturer-permitted adjustments. Do not cut or grind the carbon-fiber footplate yourself. A larger brace should not be selected merely to accommodate footwear.
AFO Light has a posterior carbon-fiber strut for mild to moderate drop foot, with a 220 lb (100 kg) user limit. AFO Dynamic has an anterior-medial support and full-length toe lever, with a 265 lb (120 kg) user limit. An orthotist can recommend the appropriate model. Compare AFO Dynamic here →
Replace worn straps or padding when closures no longer grip, padding is compressed or damaged, or the brace no longer fits properly. There is no fixed annual replacement schedule. The compatible accessory kit contains replacement components. AFO Light Accessory Kit (O-122101)
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