Biomechanical compatibility is one of the most important principles in designing prosthetic limbs and orthoses. It ensures that the device is well-suited to the human body, supporting natural movement while preserving the health of muscles and joints. Balance and Comfort A prosthetic limb or orthosis should have the following characteristics: Does not hinder natural movement: allowing the user to move in a manner similar to natural body motion. Distributes forces evenly: preventing excessive pressure on any specific part of the body, thus protecting joints and muscles. Reduces muscular strain: ensuring that the user does not need to exert extra effort to operate the prosthetic device. Risks of Poor Biomechanical Compatibility Using a prosthetic limb or orthosis that is not biomechanically compatible may lead to long-term health problems, such as: Chronic pain in joints or muscles Secondary injuries to the spine or other body parts Reduced mobility and difficulty in efficiently using the prosthetic limb Conclusion Biomechanical compatibility is the cornerstone of prosthetic and orthotic design. It ensures user comfort, effective functional performance, and minimized health risks, thereby enhancing quality of life and enabling individuals to perform daily activities with confidence and safety.