What is the Defender Knee Brace? The Physio Room.com Defender Knee Brace is a tool free mesh brace for Osteoarthritis & issues with Bow Leg. The extra extension buffer relieves pain & discomfort by slowing down knee extension, preventing hyper extension & over exertion of the injured limb. Engineered to be comfortable & breathable, the Defender provides excellent support through a 3-point load shifting system that corrects knee joint alignment. How does it work? The Physio Room.com Defender has been specifically engineered for patients with ACL, PCL, MCL & LCL instabilities. Using aircraft grade aluminum hinges the Defender adds rigidity & support to the injured knee with its patented ROM design for easy, tool free motion. The ROM hinge allows for an easy, fast range of motion setting that, when coupled with the extra extension buffer helps to relieve pain & provides optimum support. Featuring an open wrap-around design & adjustable straps, the Defender can be easily applied to the injured limb through the 3 point loading system. The Coolplus fabric lining keeps the wearer cool & dry by wicking away moisture from the skin ensuring that optimum comfort is always achieved. Setting the knee brace Setting is best performed under supervision of a health care professional but is simple & easy to do. Simply remove the Physio Room.com cover & the orange flexion & extension buffer stops & replace with the relevant flexion & extension metal stops. The sizes are corresponding & marked F & E accordingly. When the stops have been set in place, simply replace the Physio Room.com plastic cover until it clicks. Your knee brace is now set & ready to use. As the injury heals & more movement is required around the joint the stops can be replaced by those with less ROM support. Sizing options Measurements should be taken 6" (15cm) above the mid-patella. Please select which knee