• American Academy of Orthopaedic Surgeons
http://www.aaos.org/

• American Society for Surgery of the Hand
http://www.assh.org/

• National Institute of Arthritis and Musculoskeletal and Skin Diseases
http://www.niams.nih.gov/

• American College of Foot and Ankle Surgeons
http://www.acfas.org

• The American Orthopaedic Foot & Ankle Society
http://www.aofas.org