Akron Children's Hospital
Akron Children's Hospital: Kids Health: Musculos Y Articulaciones
These slides shows the different muscles, bones, cartilage, ligaments and tendons around the knee. The page is also available in English.
Other
American Academy of Orthopaedic Surgeons (Aaos)
Homepage for Physicians specializing in the musculoskeletal system (bones, joints, muscles, ligaments, and tendons) This site has a great deal of information about orthopedic medicine and includes an education section.