11-32XX-X 11-32XX-X 988.99

DonJoy FullForce Ligament Knee Brace

Provides complete protection of the ACL for athletes who don’t want to lose speed by weighing themselves down with a heavy brace.

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


The DonJoy FULLFORCE knee brace is for protecting the ligaments of the knee, especially the ACL, from injury. The FULLFORCE is most commonly worn by competitive athletes who suffer from any of these conditions, can't afford to be weighed down by a bulky brace, and are not trying to prevent contact or impact-related injuries (like a football lineman might want to do). This knee brace is designed to provide complete protection of the knee for competitive athletes who are at the highest risk for injuring their ACL. Using DonJoy's 4-Points-of-Leverage system and the FourcePoint hinge, knee instabilities are continually corrected. This means an injury doesn't have to occur for this brace to work-it significantly decreases your chance of getting hurt in the first place!

Features & Benefits

  • Fourcepoint Hinge Technology to help reduce the amount of time the knee is in an "at-risk position"
  • Four-Points of Leverage System helps reduce strain on the ACL
  • Designed with strong, lightweight aluminum frame for comfort and durability
  • Adjustable, swivel tab straps for secure fit
  • Designed to support and protect moderate to severe ACL, MCL, LCL instabilities, after ACL reconstruction surgery, combined instabilities (CI), meniscus injuries, knee hyperextension
  • Best for baseball, cycling, football, hockey, lacrosse, running, walking, hiking, and fitness

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 diameter you measure here to choose your size.

Note: Knee measurement is the most important, if you measure between sizes we recommend going up one size for optimum comfort and fit

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 FullForce Ligament Knee Brace

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