Our bestseller
DonJoy Armor ACL Knee Brace with Fourcepoint Hinge
- Strong and supportive off-the-shelf option for contact sports with added ACL support via the FourcePoint Hinge.
DonJoy Armor ACL knee brace with FourcePoint hinge delivers an indestructible shield of proven protection and uncompromised strength giving athletes the confidence to go all out, guaranteed. Indestructible Protection! Athletes involved with contact and extreme sports demand a knee brace that provides uncompromised strength with a shield of injury protection allowing them to go all out. The NEW DonJoy Armor with FourcePoint hinge fits their profile. The steel reinforced hinge plate delivers additional strength while the low profile FourcePoint hinge and internally mounted straps promotes bilateral use that won't impede performance. Armor with FourcePoint hinge provides healthcare professionals the strongest prefabricated solution to protect athletes who dare to challenge their own boundaries.
Ideal applications include:
The DonJoy Armor knee brace with Fourcepoint hinge design combines two clinically-proven DonJoy technologies in one brilliantly performing brace. Our 4-Points-of-Leverage System provides ligament stability and significantly reduces ACL strain.DonJoy's FourcePoint hinge dampens knee joint extension, which increases flexion angles and reduces anterior shear forces on the tibia. The result - less strain on the ACL and a considerable decrease in the chance of injury. Together, these two technologies add up to ironclad confidence.
DonJoy Armor knee brace with Fourcepoint hinge is used to treat or prevent the following injuries:
- Moderate to severe ACL instabilities
- After ACL reconstruction surgery
- Hyperextension
Goals:
- Increase high impact activity;
- Delay knee surgery;
- Prevent stop shock syndrome;
- Decrease anti-inflammatory medications;
- Decrease pain symptoms associated with ACL injuries;
- Improve joint function;
- Provide maximum support and maximum stability
Features & Benefits:
- Four-Points of Leverage Dynamic System
This patented technology was developed to reduce the strain on the ACL by distributing the load placed on the ligament via four points.
- FourcePoint Hinge Technology
Makes you less likely to suffer from an ACL injury because it reduces the amount of time your knee is in an “at risk position”, enhances the Four-Points of Leverage by increasing the posterior load applied by the brace on the tibia, and improves your natural gait by applying progressive resistance before reaching a firm end point during movement.
- Strong Aircraft Grade Aluminum Frame
You get the benefits of a lightweight and low profile knee brace that is also stronger, thicker, and more stable than the other lightweight knee braces on the market.
- Custom Frame and Swiveling Strap Tabs
Get a perfect fit by molding the brace to your knee, as well as enhance the fit and suspension of the brace with the swiveling strap tabs.
- Aircraft Aluminum Frame
You get the benefits of a lightweight and low profile knee brace that is also stronger, thicker, and more stable than the other lightweight knee braces on the market.
- Anti-migration Supra Condyle Pad
Your knee brace will stay in place no matter how active you are.
- Calf Pinch Guard
Provides a smooth transition between boot and calf cuff so you’ll never pinch your calf again.
- Impact Guard
Protects the shin and knee against blunt blows, as well as prevents you from ripping pants or uniforms.
This is a medical device
Use it according to the instructions for use or label.
Do you need help? Do you have any questions?Ask a question and we'll respond promptly, publishing the most interesting questions and answers for others. 
Wearing an ACL knee brace can help prevent injury to the Anterior Cruciate Ligament or help support your knee after an ACL tear or injury. A brace specific to protecting your ACL reduces the amount of time that your ACL is in an “at-risk” position for tearing.

Knee injuries while skiing is a hot topic as the ski resorts are getting ready to open forthe season. Researchers are also trying to reconcile conflicting findings about gender as a risk factor for injury.

ACL ligament knee injury is serious and painful. Most people who have ever been injured in that way report that pain is unimaginable, and walking is impossible. How this dangerous injury occurs? What are acl tear symptoms and possible acl reconstruction methods? We will find answers for that questions in this article.
Size | Thigh | Knee Center | Calf |
---|
XS | 33-39 cm ( 13"- 15,5") | 30-33cm (12"-13") | 25-30cm (10"-12") |
S | 39-47 cm (15,5"-18,5") | 33-35cm (13"-14") | 30-35cm (12"-14") |
M | 47-53 cm (18,5"-21") | 35-38cm (14"-15") | 35-40cm (14"-16") |
L | 53-60 cm (21"-23,5") | 38-43cm (15"-17") | 40-45cm (16"-18") |
XL | 60-67 cm (23,5"-26,5") | 43-48cm (17"-19") | 45-50cm (18"-20") |
XXL | 67-75 cm (26,5"-29,5") | 48-53cm (19"-21") | 50-55cm (20"-22") |
XXXL | 75-83 cm (29,5"-32") | 53-58cm (21"-23") | 55-60cm (22"-24") |