http://www.niams.nih.gov/Health%5FInfo/Knee_Problems/default.asp
National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health
This consumer health information fact sheet contains general information about knee problems. Symptoms, diagnosis, and treatment of specific types of knee injuries and conditions are covered. The fact sheet also includes descriptions and a diagram of the different parts of the knee, including bones, cartilage, muscles, ligaments, and tendons.