Donjoy Armor Professional Knee Brace With Fourcepoint

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Donjoy Armor Professional Knee Brace With Fourcepoint

  (9 Reviews)
Ligament / Leg:  
£429.95   (£358.29 Exc. VAT)  
List Price:  £499.99
Availability: In Stock Image
  • The ultimate ACL knee brace providing support to the knee joint
  • Designed specifically for skiing, motorcross, extreme sports and contact sports 
  • Suitable for moderate to severe ACL instabilities, reconstruction and deficiencies
  • Provides unbeatable supports and prevents hyperextension of the knee

Brand:  Donjoy

Donjoy Armor Knee Brace with Fourcepoint

The Donjoy Armor Knee Brace with Fourcepoint is the ultimate knee brace for the protection of the ACL and hyperextension injuries. The Donjoy Armor is the ideal knee brace for skiing and professional sports use.

Constructed from light aircraft grade aluminium, the Donjoy Armour With Fourcepoint Knee Brace is exceptionally strong and lightweight and enables you to continue with any sporting activity.

Donjoy Armor Knee Brace With Fourcepoint Hinge



The Donjoy Armor with Fourcepoint Knee Brace is a hinged knee brace using the Donjoy Fourcepoint Hinge Technology. The spring loaded Fourcepoint Hinges keep the hamstring in constant tension. As the hamstring is attached to the tibia (or shin bone) this tension pulls the tibia back keeping it stable and almost entirely eliminating the chance of an ACL injury.

Donjoy Knee Braces are designed to react during leg extension and offer an increasing resistance in the last 35 degrees of extension, in order to reduce extension shock and increase posterior tibial loads. 

The hinge has three adjustment settings to vary the amount of resistance to best suit the advice of your doctor and your own personal comfort.

The Donjoy Armor with Fourcepoint is ideal for patients returning to sports specific activity after ACL reconstruction, an ACL deficient knee or for prophylaxis. This Donjoy hinged knee brace is only suitable for ACL injuries. If you have a PCL injury or have a combination of knee injuries or problems and require a combined instability knee brace (CI), please see the Donjoy Armor.

Features of the Donjoy Armor with Fourcepoint Knee Brace

  • Enhanced Four-points-of-leverage
  • Adjustable resistance offered in 25-0, 35-10, 45-20 degrees (shipped with 35-10 degrees)
  • Gradual “soft” stop to extension
  • Helps prevent the knee from Hyperextension
  • Flexion-extension control
  • Suitable for men and women
  • Short calf for boot clearance
  • Moldable, medial swooping frame for custom fit
  • Strong 6061 T6 aircraft aluminum frame
  • 1 year warranty on frame and hinge
  • Standards anti-migration supra Condylar pad
  • 6 months warranty on soft goods.

Donjoy Armor With Forcepoint Knee Brace Full Pack

Suitable Sporting Activities

  • Tennis
  • Ski
  • Motocross
  • Golf
  • Football/soccer
  • Basketball
  • Cycling
  • Volleyball
  • Handball
  • Watersports

Sizing Information

The Donjoy Armor with Fourcepoint Knee Brace is available in 7 sizes and is suitable for men and women.

The thigh measurement is taken around the thigh 15 cm (6") above the knee cap. The knee centre measurement is taken directly around the centre of the knee cap. The calf measurement is taken around the calf 15cm (6") below the knee cap.

For extra information and directions on how to size and apply your knee brace, check out our blog.

Size Thigh Circumference (cm/inches) Knee Centre Circumference (cm/inches) Calf Circumference (cm/inches)
Extra Small

33 - 39cm

13 - 15.5"

30.5 - 33cm

12 - 13"

25.5 - 30.5cm

10 - 12"


39 - 47cm

15.5 - 18.5"

33 - 35.5cm

13 - 14"

30.5 - 35.5cm

12 - 14"


47 - 53cm

18.5 - 21"

35.5 - 38cm

14 - 15"

35.5 - 40.5cm

14 - 16"


53 - 60cm

21 - 23.5"

38 - 43cm

15 - 17cm

40.5 - 47cm

16 - 18"

Extra Large

60 - 67cm

23.5 - 26.5"

43 - 48.25cm

17 - 19"

47 - 50.75cm

18 - 20"


67 - 75cm

26.5 - 29.5"

48.25 - 53.25cm

19 - 21"

50.75 - 56cm

20 - 22"


75 - 81cm

29.5 - 32"

56 - 61cm

21 - 23"

53.25 - 58.5cm

22 - 24"

Do you have a question about this product or want to purchase it? No problem at all. Simply call us on 020 7720 2266 between 09:00 and 17:00 Monday to Friday. 

You can also email us with your question by using the form below. A member of our helpful Customer Care Team will respond to your enquiry personally as soon as they can.

Your Name: *
Your Email Address: *
Your Message: *
Please add the two numbers

To find out more information about the Donjoy Armor Professional Knee Brace with Fourcepoint or injuries that the support can help with, check out the following links:

Delivery - Free UK Mainland Delivery

This item is usually dispatched by 24 hour courier.

This item is usually dispatched the same day for next working day delivery when ordered before 2.00pm, Monday to Friday.

Please call our Health and Care Customer Care Team on 020 7720 2266 if you have any questions about the delivery of this item.

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Customer Reviews
Average Rating (9 Reviews):  
Write a Review and share your opinions!

Great Product, Great Customer Service
Friday, 1 September 2017  | 

Second time purchasing a Donjoy, first time with Health and Care. It's a brilliant product that has only been improved. And despite making a colossal error on my part with the sizing, Health and Care managed to sort out a re-delivery very quickly.

Was this helpful to you?  Yes  /  No

This review has not been appraised.


Hi Amber,

We're glad that you're happy with your product and with our service as well!

Best wishes,

Alex at Health and Care

Donjoy Armor Professional Knee Brace
Saturday, 24 June 2017  | 

This brace works really well and has improved my confidence in running on the squash court. Prior to getting this brace my knee instability was giving me significant mobility problems and post match discomfort. I'm now moving around the court faster and I'm not getting any post match discomfort.

Was this helpful to you?  Yes  /  No

This review has not been appraised.

Saturday, 17 June 2017  | 

Perfect support for torn ACL - very comfortable and sturdy. I would recommend this to anyone with this sort of injury.

Was this helpful to you?  Yes  /  No

This review has not been appraised.

Donjoy Armor Professional Knee Brace With Fourcepoint
Tuesday, 19 January 2016  | 

Sizing was good and product as described.

Was this helpful to you?  Yes  /  No

3 of 3 people found this review helpful.

Well happy
Thursday, 17 December 2015  | 

I ordered the wrong size originally. But health and care were really helpful and made it simple to exchange for the right size. The brace is ace it gives great support. I am looking forward to snowboarding this year.

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5 of 5 people found this review helpful.

donjoy knee brace
Thursday, 13 March 2014  | 

Very pleased with product & service

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3 of 3 people found this review helpful.

Donjoy Knee Brace
Monday, 7 March 2011  | 

My first ski after rupturing my left ACL last year. Using the Donjoy brace gave me really good support and was comfortable to wear. Money well spent... and hopefully lots more skiing to come.

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68 of 80 people found this review helpful.

Donjoy knee brace
Tuesday, 15 February 2011  | 

Excellent product and extremely well explained by the help team. A 15 minute conversation (Simon I think) was very assuring.

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59 of 75 people found this review helpful.

Skiing with no ACL
Wednesday, 5 January 2011  | 

I am a 48 year old female and completely ruptured my ACL skiing Easter 2010. I would probably say I am an advanced, but not a daredevil who prefers to stick to the piste. After rehab my leg was fairly stable so I concentrated on building up compensatory muscles and decided not to go for an ACL reconstruction. My one concern however was whether I would be able to ski. My physio recommended this knee brace and I am pleased to report that I was able to ski comfortably all week. I did stay within my comfort zone and didn't push myself too hard, but did ski at speed and was able to a good days skiing. In fact my knee probably felt better at the end of the week than it did before the torn ACL.

So all in all can't recommend it enough. I certainly wouldn't have been skiing this year if I had had the reconstruction.

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90 of 110 people found this review helpful.

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