Want more information? Try one of these Web sites. You'll find information on musculoskeletal conditions relating to the knee, links to other Web sites, and information on other health conditions.

• American Association of Hip and Knee Surgeons American Association of Hip and Knee Surgeons (http://www.aahks.org/)
• American Orthopaedic Society for Sports MedicineAmerican Orthopaedic Society for Sports Medicine (http://www.aossm.org/)
• Arthritis FoundationArthritis Foundation (http://www.arthritis.org/)
• Medline Plus Knee Injuries and DisordersMedline Plus Knee Injuries and Disorders (http://www.nlm.nih.gov/medlineplus/kneeinjuriesanddisorders.html)
• National Institute of Arthritis and Musculoskeletal and Skin Disorders Health InformationNational Institute of Arthritis and Musculoskeletal and Skin Disorders Health Information (http://www.niams.nih.gov/hi/index.htm)
• Orthogate: Patient Resources on Knee ProblemsOrthogate: Patient Resources on Knee Problems (http://www.orthogate.org/patient-education/knee/)
• Orthogate: A Patient's Guide to Artificial Knee ReplacementOrthogate: A Patient's Guide to Artificial Knee Replacement (http://www.orthogate.org/patient-education/knee/artificial-joint-replacement-of-the-knee.html)
• The Knee SocietyThe Knee Society (http://www.kneesociety.org/)