About.com – www.orthopedics.about.com
Academy Association of Hand Surgery – www.handsurgery.org
American Academy of Orthopedic Surgeon – www.aaos.org
Arthritis Foundation - www.arthritis.org
Cliff Sheats - www.leanbodies.com
Harvard Medical – www.intelihealth.com
Mayo Clinic – www.mayoclinic.com
Smith & Nephew – www.knee1.com
University of Washington – www.orthop.washington.edu
University of California at San Francisco - www.orthosurg.ucsf.edu
U.S. National Library – www.medlineplus.org