Use this bar to show information about your cookie policy.
Roll over image to zoom inClick on image to zoom
/
Description
Ossur AFO Dynamic Carbon Fiber Drop Foot Brace with Flex-Foot Technology
The AFO Dynamic Drop Foot Brace utilizes Flex-Foot technology and the energy-storing properties of carbon fiber to provide a strong, lightweight solution for people with varying degrees of drop foot. This advanced ankle-foot orthosis delivers real energy return for a more efficient walk, making it ideal for active individuals leading busy lives.
⚠️ IMPORTANT: Proper Fit is Critical for Comfort & Effectiveness
Returns due to fit issues are common with AFO braces. Please take time to measure carefully and review our comprehensive fit guide before ordering.
Learn how to prevent pain, pressure points, and shoe problems
AFO Dynamic Selection & Measurement Chart
How to Measure for the Correct Size
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.
Calf Height (Primary): Stand upright. Find the thickest point of your calf — this is where the velcro strap will sit and hold the brace in place. Using a flexible tape measure, measure from that thickest point straight down to the floor. Match this measurement to the chart below.
Shoe Size (Secondary): Use your regular US shoe size to confirm the correct size and foot plate length.
📏 Sizing & Fit Tips:
Measure your calf at its thickest point — this is where the velcro holds the brace, so calf height (not circumference) is what determines your size.
If you are between sizes, choose the smaller size for a more secure fit.
If the foot plate is slightly too long for your shoe, it can be professionally trimmed. Any orthotic company — such as Hanger Orthotics and Prosthetics — can trim your AFO foot plate to the correct size. Do not buy a larger size just to accommodate your shoe.
Calf Height* — Measure from thickest point of calf to floor
Calf Height
12–13.5" (30–34 cm)
12.5–14.25" (32–36 cm)
13.25–15" (34–38 cm)
14.25–15.75" (36–40 cm)
Shoe Size (US)
Male
3–5
5.5–7.5
8–10.5
11–14
Female
4–6.5
7–9
9.5–12
—
Foot & Plate Dimensions
Foot Size
8–9" (21–23 cm)
9–10" (23–25 cm)
10–10.75" (25–27 cm)
11–11.5" (27–29 cm)
Foot Plate Length
8.75" (22 cm)
9.5" (24 cm)
10.25" (26 cm)
11" (28 cm)
Strap Height**
12.6" (32 cm)
13.25" (34 cm)
14.25" (36 cm)
15" (38 cm)
Weight
2.7 oz (75 g)
3.5 oz (100 g)
4.2 oz (120 g)
5 oz (140 g)
* Calf Height = distance from the thickest point of your calf to the floor, measured while standing. This is the primary sizing measurement — not calf circumference.
** Strap height measured to the top strap position.
Product Overview Video
Clinical Indications
Drop foot secondary to:
Cerebrovascular Accident (CVA/Stroke)
Multiple Sclerosis (MS)
Charcot-Marie-Tooth Disease (HMSN)
Mild knee instability
Other neurological conditions affecting dorsiflexion
Shipping: Ships from NJ or CA warehouse in 1–3 business days based on your location.
Medical Disclaimer: This product is intended to support drop foot resulting from neurological or muscular conditions. It is not a substitute for professional medical advice. Consult your physician or orthotist before use if you have questions about your diagnosis or treatment plan.
What's Included
The AFO Dynamic comes complete with one carbon fiber AFO brace, foam padding, and adjustable straps.
🔧 Protect Your Investment: Order Replacement Parts Now
With daily use, AFO straps and padding wear out in about 12 months. Don't wait until they fail—order your replacement kit today!
✅ Why Order the Accessory Kit Now?
Straps and padding are consumable items that need regular replacement
Having spares on hand prevents downtime when parts wear out
Velcro loses grip strength over time—fresh straps restore like-new fit
Padding compresses and thins with use—replacements restore comfort
Follow these step-by-step instructions for proper application of your AFO Dynamic brace:
Frequently Asked Questions
What is foot drop and what causes it?
Foot drop (also called drop foot) is the inability to lift the front part of the foot, causing it to drag on the floor during walking. It is not a disease itself — it is a sign of an underlying neurological, muscular, or anatomical problem. 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 may be temporary or permanent depending on the underlying cause.
What are the symptoms of foot drop?
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 — raising the thigh higher than normal to clear the foot — and foot slap when the foot hits the ground. In some cases, the skin on the top of the foot and toes may feel numb. Patients may also trip or stumble more frequently on uneven surfaces.
How do I measure for the correct AFO Dynamic size?
Sizing is based on calf height — not circumference. Stand upright and find the thickest point of your calf. This is where the velcro strap wraps around and holds the brace in place. Measure from that thickest point straight down to the floor. Match this measurement to the size chart above. Your shoe size is used as a secondary confirmation. Do not measure calf circumference — it is not used for sizing this brace.
What if the foot plate is too long for my shoe?
Do not buy a larger size to accommodate your shoe. Instead, have the foot plate professionally trimmed. Any orthotic company — such as Hanger Orthotics and Prosthetics — can trim your AFO foot plate to the correct size. This is a routine procedure that preserves the structural integrity of the carbon fiber and ensures a proper fit inside your shoe.
Can the AFO Dynamic handle mild knee instability?
Yes. Unlike the AFO Light, the AFO Dynamic provides medial-lateral stability at mid-stance, making it suitable for patients with mild knee instability in addition to drop foot. The full-length toe lever and tapered carbon heel also help reduce compensatory movements that can stress the knee and hip during gait.
When should I replace the straps and padding?
With daily use, soft goods typically need replacement approximately once per year. Signs that replacement is needed include: Velcro no longer grips securely, padding is compressed or thinned, straps are frayed or stretched, or the brace feels loose even when fully tightened. The AFO Dynamic Accessory Kit includes all replacement soft goods.
OrthoTape.com is an authorized dealer of Össur products and guarantees their authenticity and craftsmanship. We source directly from the manufacturer and back every purchase with real customer support.
Looking for a different AFO or drop foot solution? Browse our full selection to compare options by weight capacity, mounting style, and activity level:
You all were very helpful and very fast , we are very happy with the braces they are working very well, thanks be to God!
A
Anonymous
Always outstanding! Quick shipping and excellent pricing
Always outstanding! Quick shipping and excellent pricing.
B
Bradley Grahame
Awesome support
This brace costs less to buy online orthotape.com then to get it from a local bracing company.
Helps support my ankle while I am walking.
B
Bradley Grahame
AFO dynamic
“This is just what I needed. I had a drop foot brace with the plastic running up the back of my leg. It worked for what it was designed for. I needed more rigidity in both the forward and backward movement of my ankle in order to keep my balance better. This helps a great deal.”
This is a top of the line boot. I have used another brand given to me by my doctors office that that had a lip on the outside not padded which created skin breakdown on the out side of my foot. The form fit design does not have a lip and has more rubber padding at the sides than the competitor. I showed the difference in engineering design to my doctor and highly recommended the form fit boot. Please
Note they were the same price.
So, I finally got the opportunity to use the casting tape today. I want to preface this by saying I'm not a professional caster.
The tape seemed to dry out a bit too fast (it was a bit of a hot day, but I used cold tap water. As a result, the layers didn't seem to mold together very well. However, that may have more to do with MY lack of experience.
The one complaint is that the hot pink had some light (almost white) spots in the roll, and a strange waffle pattern in the ends of the rolls.
Hi Alan, thanks for sharing your experience. The white spots are caused by the dry gloves touching the casting tape. Usually when I do a final layer, I do not touch the tape at all except for the sides, so I get the perfect color finish. As for the honeycomb at the end. In our next batch we are changing that center so it does not do that. Usally I cut it off with scissors before that. As for drying out, that has to do with how fast you are at casting. Since you said you were new at it, that can happen as you have to work quickly with the tape before it hardens. You will get better with more practice. Also make sure your bucket is a new bucket, a household cleaning bucket can have cleaning residue which can cause issue with the polyurethane resin.
I have used in the past and it is great! Best advice is that it stretches more so get a size smaller than you think. But it’s a lifesaver in pediatrics!!
Hi Ericca, thank you for your wonderful feedback! If you like Delta Dry, try our OrthoH2O we are happy to send some samples to you. It is a much easier one piece application. It does not tear easy like Delta Dry and it is much more cost effective. See it here or search OrthoH2O on our site: https://orthotape.com/collections/orthoh2o-waterproof-cast
