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DonJoy Armor Knee Brace with Standard Hinge

The DonJoy Armor with standard hinge. Designed for support and protection of ACL injuries.

This item requires custom fitting and is only available through your doctor with a prescription.


One of our best off-the-shelf knee braces the DonJoy Armor knee brace is the brace to use if you are an extremely active individual or athlete who suffers from an ACL, MCL, or PCL instability or injury. If you're concerned about preventing a ligament injury, try the Armor. It's one of our supportive knee brace that doesn't require a prescription, and it also helps minimize your chances of suffering from one of these painful injuries. The Armor is ideal for athletes who play football, ski, snowboard, ride motocross, surf, wakeboard, or participate in similar high impact sporting activities.

Features & Benefits

  • Available in ACL, PCL, and CI Versions
  • Four-Points of Leverage Dynamic System helps to reduce the strain on the ACL
  • Custom frame and swiveling strap tabs offer enhanced fit and suspension
  • 6061 T6 aircraft aluminum frame provides durability in a lightweight and low-profile brace
  • Anti-migration supra condyle pad helps keep the knee brace in place
  • Calf pinch guard provides a smooth transition between boot and calf cuff to help prevent pinching (Note: This is an add-on accessory that is purchased separately)
  • Impact guard helps to protect the shin and knee against blunt blows, as well as helps to prevent you from ripping pants or uniforms (Note: This is an add-on accessory that is purchased separately)
  • Designed to support and protect moderate to severe ACL / PCL instabilities and combined instabilities (CI), MCL / LCL instabilities and hyperextension
  • Best for football, skiing, snowboarding, motocross, surfing, wakeboarding, and high-impact sports

Size Chart & Fit Guide

Take the measurement of your thigh and calf 6" above and below your kneecap using a flexible type tape measure.  Use the circumference you measure here to choose your size.

Size Thigh Knee Center Calf
XS 13" - 15.5" (33-39 cm) 12"-13" (30-33 cm) 10"-12" (25-30 cm)
S 15.5" - 18 .5" (39-47 cm) 13"-14" (33-35 cm) 12"-14" (30-35 cm)
M 18.5" - 21" (47-53 cm) 14"-15" (35-38 cm) 14"-16" (35-40 cm)
L 21" - 23.5" (53-60 cm) 15"-17" (38-43 cm) 16"-18" (40-45 cm)
XL 23.5" - 26.5" (60-67 cm) 17"-19" (43-48 cm) 18"-20" (45-50 cm)
XXL 26.5" - 29.5" (67-75 cm) 19"-21" (48-53 cm) 20"-22" (50-55 cm)
XXXL 29.5" - 32" (75-83 cm) 21"-23" (53-58 cm) 22"-24" (55-60 cm)
    Center Knee 1.Stand with your legs shoulder-width apart, legs slightly bent and leg muscles contracted.
    6 in Above 2. Measure up six inches from the center of your knee with a tape measure, as shown.
    Thig Circle 3. Measure the circumference of your thigh at the 6-inch mark, as shown.
    6 in below 4. Measure down six inches from the center of your knee with a tape measure, as shown. Then measure the circumference of your calf at the 6-inch mark.


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DonJoy Armor Knee Brace with Standard Hinge

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