American Academy of Orthopaedic Surgeons:
Your Orthopedic Connection on the Web

Arthritis Foundation:
The mission of the Arthritis Foundation is to support research to find the cure for and prevention of arthritis and to improve the quality of life for those affected by arthritis.

The Merck Manual of Medical Information:
Access to the best-selling medical reference manual.

Osteoporosis:
Osteoporosis and other bone related diseases - Natural Resource Center.

WebMD:
Site includes information from over 100 individuals who hold advanced degrees in journalism, medical illustration, health communications, clinical informatics, nursing, and medicine.