Össur CTi®3 Impact Guard
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- Questions877-284-5633 (Mon–Fri, 9–5 PT) · support@thectishop.com
The Össur CTi®3 Impact Guard is an optional accessory for the Össur CTi®3 knee brace. Össur makes Impact Guard sets available to protect the knee against impacts. The guard is made up of an upper and a lower panel joined by an elastic cord, and it mounts to the upper and lower brace frames.
*Photo showing the brace with the guard attached is for reference only. The CTi®3 knee brace is not included; this listing is for the Impact Guard only.
Choose your side and size
The Impact Guard is side-specific and comes in two sizes. Pick the side and size that match your CTi®3 brace:
- Side: Left or Right, the same side as your brace
- S–M: for Small and Medium CTi®3 braces
- L–XL: for Large and X-Large CTi®3 braces
Not sure of your brace size? See the CTi®3 size guide.
Installation
Per the Össur CTi®3 instructions for use:
- Peel back the liners to expose the mounting tabs on the upper and lower brace frames.
- Place the Impact Guard on the brace, lining up the holes.
- Secure the guard to the upper and lower frames with the two T20 Torx mounting screws.
- Reinstall the upper and lower liners.
Related parts
- CTi®3 Guard Screws: two T20 titanium screws for attaching the Impact Guard, sold separately
- CTi®3 Guard Elastic Cord: replacement cord that joins the upper and lower guard panels, sold separately
- CTi®3 MX (Motocross) Kit: includes an Impact Guard and installation hardware, plus a Sleeve with Mesh, CTi®3 decal sheet and product bag
Specifications
- Fits: Össur CTi®3 knee brace only
- Sides: Left, Right
- Sizes: S–M, L–XL
- Country of origin: Mexico
- Not made with natural rubber latex
CTi®3 Size Guide
Find Your CTi®3 Size
Measure your leg, enter your measurements below, and our CTi®3 Size Finder will compare them with the sizing ranges to identify your closest match.
CTi®3 Size Finder
Enter your measurements below. Use inches only.
How to Measure
Use the three quick visuals below, then enter your measurements into the size finder above.
Knee Width
Measure straight across the center of the knee. This is the primary measurement used to determine CTi®3 size.
Thigh Circumference
Measure around the thigh 8 inches above the center of the kneecap.
Distal Patella
Measure around the leg at the distal-patella point below the knee.
CTi®3 Size Chart
All measurements below are in inches.
| Size | Knee Width | Thigh Circumference | Distal Patella |
|---|---|---|---|
| Small (S) | 3.5" – 4" | 15.7" – 18.5" | 11" – 13.4" |
| Medium (M) | 3.9" – 4.5" | 17.7" – 21.7" | 13.4" – 15" |
| Large (L) | 4.4" – 5" | 20.5" – 24" | 15" – 16.1" |
| X-Large (XL) | 4.9" – 5.5" | 22.8" – 26.4" | 16.1" – 17.3" |
Between Two Sizes?
Use knee width as the primary sizing measurement. Then compare thigh circumference and distal-patella circumference. If your measurements point toward different sizes, contact the fit specialists at The CTI Shop before ordering.
Helpful CTi®3 Videos
Quick videos covering the brace, measurement process, and strap adjustment.
CTi®3 Overview
A quick look at the CTi®3 brace and fit.
How to Measure
See how the CTi®3 sizing measurements are taken.
CTi®3 Strapping Tips
Properly secure and adjust your CTi®3 straps.
Found Your CTi®3 Size?
Choose your recommended size and select the correct left or right brace. If your measurements don't clearly match one size, contact us before ordering.
Shop Össur CTi®3CTi®3 replacement parts and accessories keep your brace set up the way you ride .
Support That Moves With You
The Össur CTi®3 Knee Brace combines a lightweight carbon composite frame with the Accutrac® hinge to provide functional ligament support and controlled movement during active use.
Accutrac® Hinge
Follows the knee's anatomical movement, with tool-free range-of-motion control.
Adjustable Straps
Easy-pull, trimmable straps help provide a secure, personalized fit.
Carbon Composite Frame
Lightweight, high-strength carbon composite frame.
Gear Up for Every Challenge
Performance, protection, and precision - built for those who push limits. CTi®3 Knee Braces move with you through every ride, race, and recovery.
Why shop The CTI Shop?
Genuine Össur CTi®3 from an authorized retailer.
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Free U.S. Shipping
Free standard shipping on U.S. orders.
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Authorized CTi®3 Retailer
Genuine Össur CTi®3 with applicable manufacturer warranty.
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Low Price Guaranteed
Questions about a price? Contact us.
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HSA/FSA & Shop Pay Installments
HSA/FSA accepted. Interest-free installments with Shop Pay on eligible orders.
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30-Day Returns
Eligible unused items, per our Return & Refund Policy.
Frequently Asked Questions
Quick answers before you order. Still unsure? Contact us.
Will this fit my brace?
These parts are for the Össur CTi®3 knee brace. Where a part comes in sizes or sides, choose the size and side that match your brace. Not sure? Contact us before ordering.
How do I find the right size?
Knee width is the primary CTi®3 measurement. If you are between sizes, use your thigh circumference measured 8 inches above the center of the kneecap. Full steps are in the CTi®3 Size Guide.
When will my order ship?
Standard shipping is free on U.S. orders. Processing and delivery details are in our Shipping Policy.
Can I return it? Is there a fee?
Eligible unused items can be returned within 30 days. Conditions and any fees are set out in our Return Policy.
Looking for the brace itself?
Shop the single CTi®3 brace, the Motocross Pair or the Athlete Pair.
