What is a knee brace


Do you do motorcross, water skiing, rugby, tennis, mountaineering, surfing or any other sport that might lead to an injury?



“Wearing my Armor braces gives me much more confidence when I jump, especially after my knee injury I wouldn’t even think about jumping without my Donjoy Knee braces” - Nick Franklin


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Impact Guard attached to Armor Brace
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» read more		 Defiance Knee Brace
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What Is A Knee Brace?
A knee brace is a brace designed to be worn around the knee to strengthen/support the knee as well as prevent pain and injury. It is most commonly used by athletes but also by people suffering from Arthritis or other knee problems.

What’s it for?

  • Stabilizing mild to severe ACL, PCL, MCL, and LCL instabilities or tears
  • Active, sedentary, and adolescent patients
  • Contact sports
  • Stabilizing or preventing knee injuries. As motocross champion Grant Langston says, “Prevention is better than any cure.”


Do knee braces really work?
On the one end of the spectrum are people sporting the many benefits of wearing sports knee braces as a means of preventing sports-related injuries, while on the other end are those who say that sports knee braces hardly make any difference and may even have the potential of increasing the risk of injuries.

Athletes are likewise neutral in their acceptance of sports knee braces. Mainly, they are worried that the brace might hamper their performance. This is especially true for “skill” players where speed and agility is important. Contact sport players are more likely to wear sports knee braces as their function depend less on agility and speed but on strength and support.

However, the question remains: do sports knee braces work? Two studies were carried out after anterior cruciate ligament (ACL) reconstruction to determine the effect of a knee brace on coordination (test 1) and electromyographic muscle activity in drop jumps (test 2).

Test 1 studied 25 patients with ACL reconstruction under three test conditions:

  • one-leg static
  • two-legged static
  • two-legged dynamic

The results showed highly significant improvements in all braced conditions.

Test 2 had ten patients with ACL reconstruction and ten healthy subjects performed a two-legged drop-jump; this was repeated 15 times and again 15 times with a knee brace worn on the reconstructed limb.

Changes in electromyographically determined muscle activity (vastus medialis, vastus lateralis, biceps femoris, gastrocnemius) were observed, but they were significant in only few cases because of high variability. Drop-jumps with knee brace improved jumping height, increased the maximum knee angle in the ground contact phase, and reduced the maximum knee angle in the landing phase. Patients thus develop an increased confidence in the stability of their knees.

We conclude that the benefits of the knee brace are due to the mechanical action, an enhanced coordination, and a psychological effect.Click here for more information.


“Wearing my Armor braces gives me much more confidence when I jump, especially after my knee injury I wouldn’t even think about jumping without my Donjoy Knee braces”.

"Although I’m tempted to try riding without the braces, I am of the opinion that prevention is better than any cure (!) and ultimately because the short version is much more comfortable, fits in my boots and it protects me very well."

“After my LCL injury and operation in June 2005, DonJoy has always been on my side. After my injury and before the operation I used the Legend. After the operation I used the low profile TROM, post-op brace. During my revalidation period I used the Legend. Without a doubt, DonJoy’s innovative technology met my high expectations.”

“Armor by Donjoy knee braces are a perfect fit for my lifestyle, the state-of-art blowout protection provides the support and comfort I need to trust my gear”.