It wasn’t until 1993 before the first “off the shelf” CTi® knee brace became available. Aptly called the “Edge”, it was an instant success with worldwide demand.

In 2008 a new and improved design was launched replacing the “Edge”. Now known as the CTi® OTS, it is constructed using the same processes and materials as the Custom and is available in 5 sizes, left and right.

The CTi® OTS substitutes elements of the rigid CTi® frame with flexible subshells, providing adjustability and an excellent out-of-the-box fit while maintaining the level of support and protection that you would expect from a CTi® knee brace.
The brace features Össur’s patented Sensil liners, which are designed to prevent slippage & stop irritation to the skin. SensEdge® overmoulding on the strap buckles and subshells improves comfort and eliminate pressure points.

The CTi® OTS is available in Standard and Pro Sport models, with an additional PCL (posterior cruciate ligaments) option for combined ligament instabilities.

The Pro Sport is designed for contact sports and has extra layers of carbon fibre, to withstand impact. 

Product Highlights

  • Total Support System™ provides support for ACL, MCL, LCL, PCL, rotary and combined instabilities
  • Hand-laminated, pre-preg carbon fibre construction provides true rigid support
  • Frame shape is low-profile and contours to the leg, making it suitable for a variety of physical activities
  • Anatomically-correct Accutrac™ hinges with extension stops track the natural movement of the knee
  • Sensil® breathable lining increases comfort and reduces slippage 
  • SensEdge overmolding on buckles and lower cuff eliminates pressure points
  • Flexible lower cuff provides increased protection against rotational forces
  • Constructed from non-corrosive materials, enabling use for water sports
  • Available in 5 sizes, left and right

CTi Off-the-shelf: Product Features


Pro Sport brace

CTi This has additional carbon fibre layers for contact sports such as dirt bikes.


PCL version

CTi PCL (posterior cruciate ligaments) option for combined ligament instabilities.


Patella cup
CTi Patella cup A protective knee cup designed to shield the patella from flying rocks and debris common to sports like motocross and mountain biking.


Gear guard
CTi Gear Guard A protective exterior wrap for the Accutrac™ hinge designed to reduce wear-and-tear on riding leathers and bike graphics.


Soft sleeve
CTi Soft Sleeve A breathable under sleeve designed for increased comfort.


Sport sleeve
CTi Sport Sleeve A contoured, breathable undersleeve, with an elastic top edge for extra suspension control.


Motocross kit
CTi Motocross kit  Includes, patella cup, gear guards and sport sleeves.


Neoprene oversleeve
CTi Neoprene oversleeve A protective sleeve designed for close contact sports.


Padded oversleeve
CTi Padded oversleeve A padded oversleeve designed to protect exposed rigid components during close contact sport.


  • Caliper measurement: Diameter measurement using a caliper taken at centre of the knee in a weight-bearing position
  • Circumference measurement: taken just below the patella (knee cap)
  • Contact Customer Care for your caliper
CTi OTS
Size Caliper (mm) Knee Circ. (mm)
Small 89 - 102 279 - 321
Medium 102 - 114 321 - 362
Large 114 - 124 362 - 391
X-Large 124 - 133 391 - 422
XX-Large 133 - 146 422 - 460