4Titude Knee Brace


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Attention Medicare Patients

Protection with the lowest-profile.
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Complete Knee Protection

The 4TITUDE™ is DonJoy's lowest-profile brace. Available in DonJoy's same 7 sizes, you also get your choice of 3 lengths, so it's perfect for those who are short or tall, and will easily fit women or men. So if you have mild to severe knee instabilities and are looking for solid support for the activities of daily living or non-contact sports, go for 4TITUDE™ and Never Stop Getting Better.

Features and Benefits

  • Patented 4-point dynamic leverage system
  • ACL, PCL and CI versions available
  • Low-profile, lightweight design (18 oz)
  • 7 sizes and 1 length (Standard)
  • Moldable cuffs for custom fit
  • Removable thermal-formed liners and strap pads
  • Numbered straps
  • Flexion/extension stops

Shop our complete selection of knee braces, browse additional DonJoy products or 4titude replacement parts.

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Product Questions

If I have a brace, how do I tell whether it is for the ACL, PCL, or CI?
Is there a brace that you can recommend that will fit with my ski boot which comes up high on my calf as I am only 5''4"?

Question by: lb on Feb 2, 2013, 9:08 PM
Hello -

When you order a DonJoy 4Titude, you chose what type of strapping sequence you need (ACL, PCL, CI) - it does not come automatically strapped. You choose according to whatever injury or ligament you need to support.

You are able to order this brace in a short thigh and short calf model, which will accommodate to the length of a ski boot.

If you have further questions, please feel free to contact our product specialists at 888-405-3251.

Thank you and have a wonderful day!
Answer by: Admin on Feb 2, 2013, 9:08 PM
Is the 4Titude with CI starpping also water proof?
Question by: Francis on Oct 9, 2014, 12:15 PM
The 4Titude can be worn in the water
Answer by: Admin on Oct 9, 2014, 12:15 PM
I have seen many Donjoy braces in different colors and am wondering of this is an option for the 4Titude. I am required to wear braces for both knees do to a genetic malformation that causes my joints to be weak and would like to have a different color for each one to make it easier to tell them apart.
Question by: Mik on May 27, 2014, 6:48 PM
Only the DonJoy Defiance Custom kne Brace comes in different colors
Answer by: Admin on May 27, 2014, 6:48 PM
I have a PCL injury (torn meniscus). I have found a distributor in Switzerland, where I live, who only has 4titude withe CI strapping. Would that work for me? Also, you should start thinking of shipping to international locations.
Question by: Patrik on May 29, 2014, 8:12 AM
The DonJoy 4Titude with CI strapping would work perfectly for you.
Answer by: Admin on May 29, 2014, 8:12 AM
We have a disrtibutor here in the Philippines of 4titude and playmaker. Is 4titude ok for Acl tear without operation. I have an acl tear in my left knee and Im looking for something to add more stability when I'm playing basketball. My left injured knee is still strong and I can jump with that knee but wanted more stability when landing with it. The seller says the 4titude can be for acl, pcl and ci. how would I know if its for acl to make sure I get the right brace? Can you be more specific on the strapping sequence for an acl pcl and ci? I was diagnosed with partial acl tear through mri. That was some years ago. In case I also tear my pcl or have CI, can I still configure an acl fortitude to pcl or ci? The seller says it can be used on those kind of injuries and they are selling only one kind of 4titude that can be used on those injuries.
Question by: alvin on Oct 8, 2013, 1:33 AM
An email has been sent to you showing pictures of the strapping sequence for the ACL, PCL, CI. You will order your brace based on your specific needs. It sound like ACL strapping would be the option for you.
ACL is designed for a person with an ACL injury, PCL would be for someone with a PCL injury and the CI is combined instability (PCL & ACL). Each sequence is specifically designed to stabilize the knee with the injury in mind, therefore PCL strapping would be a contraindication for an ACL injury.
If you have receive a brace with ACL strapping and later would like to add the CI, your brace must be shipped back to have the additional straps, and holes for the double D ring to be added.
One last recommendation if you go with the 4titude there is an option for a FourcePoint hinge. This hinge will offer additional support to your ACL. This hinge is ONLY available with the ACL option, as it is a contraindication to PCL injuries.
Hope This information helps you out. Thank you for contacting DJO.
Answer by: Admin on Oct 8, 2013, 1:33 AM

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.

    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.