Short Description
Donjoy Armor is designed to provide athletes professional ACL brace protection and knee support. Ideal for contact/extreme sports and ski activities.
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The Donjoy Armor Knee Brace provides excellent protection for athletes in need of support for ACL, PCL, MCL. or LCL instability for contact and extreme sports. The Donjoy Armor incorporates the patented Four Points of Leverage design for ensuring maximum hyperextension protection and knee stability. The patient-ready Donjoy Armor features a standard hinge design that allows full, unrestrained flexion/extension range of motion at the knee, and internally mounted straps that promote bilateral use that won't impede performance. The knee brace is available in a Standard and a Short calf length for individuals 5"5" and shorter OR for use with ski boots. The Armor knee brace provides the strongest prefabricated solution to protect athletes who dare to challenge their own boundaries. Ideal for football, ski, snowboard, motocross, surf, rodeo, extreme sports, and wakeboard activities.

Donjoy Armor Knee Brace Features:
- Backed by DonJoy's Knee Guarantee Program™ an industry first for prefabricated bracing (FourcePoint version only)
- 1-year warranty on frame and hinges
- Clinically-proven 4-Points-of-Leverage System™
- Swooping thigh cuff for inner thigh clearance and bilateral brace use
- Strong aircraft grade aluminum frame (0.125" thick)
- Standard hinge technology (stop kit not included)
- ACL, PCL, or Combined Instability (CI) strap configurations
- Standard or short frames available
- Color: Silver Vein
- 1-year warranty on frame and hinge
- 6-month warranty on soft goods
- Available in seven sizes. See Size & Fit tab for sizing chart and measurement/fit help
Donjoy Armor Options:
- Calf Brace Length: Standard is ideal for individuals 5'6" and taller (16" length brace). Short is ideal for individual 5"5" and shorter (13" length brace)
- Version: Brace comes in three models: ACL, PCL, and CI (combined instability) versions.
- ACL - as pictured above
- PCL - has additional posterior gastroc strap in the rear
- CI - includes thigh strap across the front of the thigh, and a gastroc strap for added ACL and PCL protection - most popular model
Recommended Manufacturer HCPC: L1845 and L1852 (ACL and CI)
How To Fit Your Armor Knee Brace:
The Donjoy Armor knee brace is indicated for:
- Active adolescents and adults
- Contact and non-contact sports
- Mild to severe ACL and/or PCL, MCL & LCL instabilities for active, sedentary and adolescent patients
Download Instructions
FAQ Donjoy Armor Knee Brace
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The DonJoy Armor Knee Brace is engineered to provide maximum protection and support for individuals with moderate to severe ACL, PCL, MCL, or LCL instabilities. It's ideal for athletes engaged in high-impact or contact sports, as well as those recovering from knee surgeries or injuries.
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The Armor Knee Brace features DonJoy's patented Four-Points-of-Leverage® system, which effectively reduces strain on the ACL by distributing the load through four points. This system enhances knee stability and protection during dynamic movements.
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The FourcePoint™ hinge technology is a unique feature of the Armor Knee Brace with FourcePoint hinge that provides controlled resistance to hyperextension. It helps in reducing the risk of ACL injuries by limiting the range of motion beyond the knee's normal extension.
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Yes, the Armor Knee Brace is versatile and can be configured to support ACL, PCL, or Combined Instability (CI) injuries. The brace is available in various models to cater to different ligament support needs.
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Yes, the brace comes in standard and short calf lengths to accommodate different leg sizes and preferences. The frame is made from aircraft-grade aluminum, ensuring durability and a lightweight feel. Additionally, the brace features internally mounted straps for bilateral use without impeding performance.
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Sizing is based on thigh circumference measurements. It's crucial to follow the sizing guide provided on the product page to ensure a proper fit. If you're between sizes, it's recommended to consult with a healthcare professional for guidance.
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Yes, the low-profile design of the Armor Knee Brace allows it to be worn discreetly under clothing. The brace's structure ensures comfort and mobility without adding bulk.
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To maintain the brace's longevity:
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Hand wash the soft goods with mild soap and warm water.
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Air dry completely before reassembling.
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Avoid machine washing or drying to preserve the integrity of the materials.
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Yes, the Armor Knee Brace comes with a 1-year warranty on the frame and hinges, and a 6-month warranty on the soft goods. This warranty ensures the quality and durability of the product.
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Absolutely. The Armor Knee Brace is designed for high-impact and contact sports, including football, skiing, snowboarding, motocross, and more. Its robust construction provides the necessary support and protection for these activities.
Sizing Chart:
Watch our Measurement/Fitting Video then measure the three circumference points below on your leg using a fabric tape measure.

| Size | Thigh Circumference |
Knee Center Circumference |
Calf Circumference |
| XSmall | 13"-15 1/2" | 12"-13" | 10"-12" |
| Small | 15 1/2"-18 1/2" | 13"-14" | 12"-14" |
| Medium | 18 1/2"-21" | 14"-15 | 14"-16" |
| Large | 21"-23 1/2" | 15"-17 | 16"-18" |
| XLarge | 23 1/2"-26 1/2" | 17"-19 | 18"-20" |
| 2XLarge | 26 1/2"-29 1/2" | 19"-21 | 20"-22" |
| 3XLarge | 29 1/2"-32" | 21"-23 | 22"-24" |
Customers reviews and questions
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DME-Direct is a Donjoy Authorized Dealer Site
Donjoy believes that the best way for you to select and purchase a Donjoy product is at one of its authorized online stores of which DME-Direct is one. Only in these stores can you be sure to find the latest Donjoy collection and ensure you are getting a genuine Donjoy product with the manufacturer's full warranty.
Donjoy therefore recommends that you do not purchase a Donjoy item through any website, unless it is an authorized Donjoy dealer.
We are a Donjoy Authorized Dealer and can assure you a safe and pleasant shopping experience here at our website as if you were at our wholesale distribution premises in Valencia, California.
Some non-authorized sites sell counterfeit, second-hand merchandise, and/or products containing old fabrics, glues, and resins that do not perform as intended, and are therefore, not eligible for care under the Donjoy warranty. Others do not offer the original Donjoy warranty, nor do they offer any after-sales service of any kind.
Donjoy takes great care to ensure that all Donjoy authorized dealers offer you the very best products and service. Please take advantage of the peace of mind that only they can offer to Donjoy purchasers.


