Knee braces vary in design, fabric, and functionality and the most important aspect is getting the right type and size of knee brace for your condition. Your therapist will make sure to offer you the appropriate knee support and will show you how to put it on and take it off when necessary. Most orthopedic knee braces have adjustable velcro closure and straps. To put them on correctly, you have to first center the small front hole of the brace on your kneecap and then tighten the brace so it doesn't slide up or down. Make sure it is comfortable yet snug — you must be able to fit one or two fingers between the brace and your leg.