This sports medicine site has information on over 100 sports injuries. The Symptom Checker is a helpful feature to learn about a particular injury or about medical terminology. You can click where the injury occurred on the human body, answer a few questions about pain and it helps to identify the possible injury. For common injuries by sport see Sports Injuries. The Major Muscles of the Human Body is also helpful because for each muscle – it has descriptive information, related injuries to the area, its function and detailed pictures.