Premier Edition of our brace

The patent pending A-TraC Dynamic BraceTM is the first brace of its kind introduced for dogs. “A-TraC” stands for “anti-transitional cruciate” brace. The brace prevents anterior translation of the tibia on the femur. Dynamic infers that the brace is not static in its design, and functions in a manner which allows for a select range of motion of the stifle joint (knee joint) against resistance. The brace therefore promotes rehabilitation of the limb and joint.

Biomechanics of our brace

woundwear atrac brace bioofbrace

  • Functions via semi-tubular tension rods which are placed in the longitudinal rod pockets on the inner and outer sides of the brace
  • Maintains sagittal plane stability by posterior tethering of the tension rods above and below the stifle
  • Utilizes a buttress between the two tension rods, located over the proximal tibia, which resists anterior movement of the tibia on the femur

Applications & Benefits

Protect and Rehabilitate:

  • Intra-capsular and extra-capsular cruciate repairs
  • TPLO leveling osteotomies
  • Partial tear cruciate injuries

Protect and Maintain:

  • Cruciate injuries in dogs when surgical treatment is too great a risk due to age or health issues
  • Prevent recurrence of injuries when the dog is more active
  • Protection for the active dog with a previous history of cruciate injury


  • Decreases the progression of osteoarthritis after anterior cruciate injury.
  • Helps prevent post-operative complications due to re-injury.
  • Enhances rehabilitation.
  • Prevents recurrence of injury.

Components and Features

woundwear atrac BraceComponents

  • Three layer laminated NeopreneTM skin provides durability, comfort and flexibility.
  • Inner layer is non-irritating and non-adhering for maximum comfort for the shaved leg.
  • Outer layer provides additional strength and flexibility.
  • Adjustability at 8 to 9 different points for maximum customization.
  • Interchangeable rods provide for adjustability of range of motion at the stifle joint as healing and rehabilitation progresses.
  • Brace is stabilized at three points: the braced leg, cuff on opposite thigh, and tether to collar.

Suggested Clinical Protocols

The following clinical protocols are submitted as only suggestions and are not intended as a substitute for the clinical judgement, or specific clinical or behavioral information the veterinarian has available to him.

Acute Injuries:

      1. Begin use of brace immediately or as soon as possible after injury or diagnosis. Even if surgery is contemplated, the brace should be applied until surgery can be performed. * Whenever possible the brace should be adjusted and tried on the dog prior to surgery. This accomplishes three things:
        1. Affirms that the garment fits the dog.
        2. Allows staff to become familiar with the use of the garment.
        3. Prevents a painful and frustrating experience on the surgically treated dog.
      2. Acute injuries, including post-surgical repairs (i.e., extra-capsular or TPLO), should begin by using the LROM (limited range of motion) rods for one to three weeks, two to six weeks for the TPLO procedure. The brace should be applied over a light dressing following surgery.
        1. Limited Range of Motion Rods

      3. Substitute the TROM (total range of motion) rods for the rehabilitative phase at one to three weeks, or two to six weeks after TPLO surgery
        1. Total Range of Motion Rods

Chronic Injuries:

      • When pain is not a major feature, the TROM rods can be attempted initially

Note: Whether for Acute or Chronic injuries, if the dog ambulates with an antalgic gait or will not bear weight after an appropriate period of time, the LROM rods should be reinserted for an additional period of time until the dog appears to be pain free.


After surgical or rehabilitative treatment of the cruciate injury is complete, the brace should still be worn when the dog is more active (i.e., when the dog goes to the park, plays ball, plays with other dogs, or just runs in the backyard). This will decrease the risk of re-injury.

Determining Brace Size

Bisection of the tibia on lateral view. Measurement taken from proximal tibial plateau to distal tibial articular surface.
Warning: After the initial application of the garment:

  • The animal should be checked for points of irritation at least every 48 hours for the first week to prevent significant problems before they arise.
  • The animal should be watched closely for the first few days for indications of the dog biting or chewing the garment. If evidence of biting or chewing is visible, the dog should be fitted for an Elizabethan Collar to prevent this behavior.


U.S. & CANADA 1-800-443-4055
OUTSIDE U.S. 1-847-634-1700


We are always looking to add more referrals to our website for Veterinarians that have had experience with the A-TraC Dynamic Brace.

Once you have used our brace and you feel comfortable with its application and use, please register with us.

Click here to download brochure

Click here to download brochure