Since there are so many different types of orthosis braces out there, it makes it all the more difficult to find the perfect brace. Some braces, such as knee braces, look similar but are designed fairly differently. They help support different parts of the knee.
For example, someone with patellar tendon issues will not be using the same type of brace as someone with knee osteoarthritis. So it's a good idea to do a fair amount of research before settling on a product. A doctor can help direct in one in the right direction.