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DonJoy Armor Knee Brace

Buy this product and earn $16.68 Reward Dollars.

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Buy this product and earn $16.68 Reward Dollars.

For Questions, Please Call...
  • Total: $667.19
    Total: $555.99
Total: $667.19
Total: $555.99

DonJoy Armor Knee Brace With FourcePoint Hinge provides an unbreakable shield of proven protection and unmatched strength, allowing athletes to go all out with complete confidence. The DonJoy Armor Knee Brace With FourcePoint Hinge delivers indestructible security of proven safety and unmatched strength, allowing athletes to go all out with complete confidence. The steel-reinforced hinge plate gives additional power, while the low profile FourcePoint hinge and internally mounted straps promote bilateral use that would not impede performance. Armor FourcePoint provides healthcare professionals the strongest prefabricated solution to protect athletes who dare to challenge their boundaries.

DonJoy Armor Knee Brace With FourcePoint Hinge Features

  • 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
  • Patented clinically-proven FourcePoint hinge technologies, stop kit not included
  • Anterior Cruciate Ligament (ACL), Posterior Cruciate Ligament (PCL), or Combined Instability (CI) strap configurations
  • This knee brace provides uncompromised strength with a shield of injury protection allowing athletes to go out involved with contact and extreme sports

Material Contents of Armor Brace

  • Frame - Aluminium
  • Hinge - Aluminium & Steel
  • Strap Tabs - Aluminium & Nylon
  • Soft Goods - Nylon & EVA

What to buy with DonJoy Armor Action Knee Brace

When to use DonJoy ACL Knee Brace?

  • Hyperextension
  • Prophylactic/bilateral use
  • MCL/LCL instabilities
  • ACL reconstructions
  • Moderate to severe ACL instabilities

Ideal applications of ACL Armor include

  • Patient Activity Level
  • Contact / extreme sports
  • Highly active lifestyles

How to use Donjoy ACL Brace?

  • While sitting on the edge of a chair, step through the brace. Flexing the knee to 45°, position the brace, centering the hinge about 1" (2.54 cm) above the top of the kneecap and slightly past midline of the leg. Make sure the brace is not twisted on the leg. 
  • Secure the bottom calf strap first, then the top thigh strap. 
  • Keeping the knee bent at 45 degrees, push both condyles (hinges) toward the back of the leg. 
  • Maintaining the position of the hinges: for ACL version secure lower thigh strap , for PCL version secure upper calf strap, for CI version secure lower thigh strap then upper calf strap on the back of the leg. 
  • For ACL version, draw the hinges forward slightly before fastening the front tibial (shin) strap. 
  • For PCL version draw the hinges forward slightly before fastening the front thigh strap. 
  • For CI version draw the hinges forward slightly before fastening the front tibial (shin) and the front thigh strap. 
  • Do not pull the hinges beyond midline of the leg. 
  • For ACL version next, secure the upper calf strap. 
  • Be careful not to pull this strap too tight and risk circulation problems. 
  • When all strapping is complete, the hinge should center just above the top of the kneecap and slightly behind midline. To ensure that no slippage occurs during activity, it is recommended to do a few knee bends or walk for a few minutes, then re-tighten the straps following steps.

Instructions For Hinge Adjustment

  • Your DonJoy knee braces comes with 10° extension stops installed. To change the installed stops, first completely remove the screw. Then remove the stops. Insert the new stops, align with the holes in the hinge plate, then reinsert the screw. Using a Phillips head screwdriver, ensure that the screws are seated in the recess and completely tightened. Both medial and lateral stops must be identical in degree.
  • Lateral slide shield hinge cover (standard on LEGEND). In order to remove the extension stop, it is necessary to flex the hinge and slide the protective shield cover off before removing the stop. 
  • Extension Stops: 0°, 10°, 20°, 30°, and 40°. Flexion Stops: 0°, 45°, 60°, 75°, and 90°

How to clean DonJoy Armor Knee Brace?

Hand wash in water (86ºF/30ºC) using mild soap. Air dry.

Precautions to take while using DonJoy Fourcepoint Brace

  • If during activity, re-tightening is necessary, re-tighten all straps following steps in the application instructions. 
  • All straps and pads may be trimmed to fit individual variations in limb circumference. 
  • The brace may be used in fresh or salt water. Following use in water activities, drain thoroughly and rinse with clean, fresh water and then air dry. 
  • Hand wash your liners and condyle pads in cold water with mild detergent. Air dry only, do not heat dry liners or pads.
  • The hinge mechanism requires little maintenance in normal use. However, you may apply a dry lubricant such as a Teflon spray to the internal mechanism of the hinge. Dry lubrication is recommended following use in water. 
  • Periodically inspect hinge screws for tightness and retighten as needed.

DonJoy Armor Instruction Manual

DonJoy Knee Brace Size Chart



Knee Center


X-Small 13" - 15.5" (33 - 39 cm) 12" - 13" (30.5 - 33 cm) 10" - 12" (25.5 - 30.5 cm)
Small 15.5" - 18.5" (39 - 47 cm) 13" - 14" (33 - 35.5 cm) 12" - 14" (30.5 - 35.5 cm)
Medium 18.5" - 21" (47 - 53.25 cm) 14" - 15" (35.5 - 38 cm) 14" - 16" (35.5 - 40.5 cm)
Large 21" - 23.5" (53.25 - 59.5 cm) 15" - 17" (38 - 43 cm) 16" - 18" (40.5 - 47 cm)
X-Large 23.5" - 26.5" (59.5 - 67.25 cm) 17" - 19" (43 - 48.25 cm) 18" - 20" (47 -50.75 cm)
2X-Large 26.5" - 29.5" (67.25 - 75 cm) 19" - 21" (48.25 - 53.25 cm) 20" - 22" (50.75 - 56 cm)
3X-Large 29.5" - 32" (75 - 81.25 cm) 21" - 23"(56- 61 cm) 22" - 24" (53.25 - 58.5 cm)


DonJoy Warranty

1 year warranty on frame and hinges

Customer Reviews


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