Abstract: The product here defined is a modular knee brace system that includes a knee brace, and which may include one or more modules, where the system is portable. The knee brace is configured specifically for recovery from injury, or surgery. The knee brace includes a breathable shell layer for providing support around the knee of the user. The brace may include a removable insert, which may be relatively rigid for insertion into a pocket of the knee brace to provide extension (e.g., terminal extension) of the knee when the insert is inserted. Heating and/or cooling is also provided. The system may further include a portable elevation stand, allowing the user to elevate the lower leg during cooling or heating treatment. The system may utilize AI driven custom printed components to uniquely address individual patients' treatment and healing plans.