1. Palmer T, Toombs JD. Managing joint pain in primary care. J Am Board Fam Pract. 2004;17(suppl):S32-S42.

2. Cush JJ, Lipsky PE. Disorder of the joints. In: Isselbacher K, et al, eds. Harrison's Principles of Internal Medicine. 13th ed. New York: McGraw-Hill Professional; 1994.

3. Arthritis Foundation. Disease Center: Osteoarthritis. Available at: http://www.arthritis.org/conditions/diseasecenter/OA. Accessed Nov. 28, 2006.

4. Richette P, et al. Estrogens, cartilage, and osteoarthritis. Joint, Bone, Spine. 2003;70(4):257-262.

5. Reginster JY, et al. Is there any rationale for prescribing hormone replacement therapy (HRT) to prevent or to treat osteoarthritis? Osteoarthritis Cartilage. 2003;11(2):87-91.

6. Cicuttini F, et al. Gender differences in knee cartilage volume as measured by magnetic resonance imaging. Osteoarthritis Cartilage. 1999;7(3):265-271.

7. Cowley HR, et al. Differences in neuromuscular strategies between landing and cutting tasks in female basketball and soccer athletes. J Athl Train. 2006;41(1):67-73.

8. Centers for Disease Control and Prevention. Obesity still a major problem. Available at: http://www.cdc.gov/nchs/pressroom/06facts/obesity03_04.htm. Accessed Nov. 28, 2006.

9. Women lag behind men in vigorous exercise: survey. Available at: http://www.medicalnewstoday.com/medicalnews.php?newsid=4550. Accessed Nov. 28, 2006.

10. Jordan JM. The Johnston County osteoarthritis project: arthritis & disability. CDC-Funded Science. 2006. Available at: http://www.cdc.gov/arthritis/funded_science/projects/johnston-county-osteoarthritis-project.htm. Accessed Nov. 28, 2006.

11. Overweight, obesity, and healthy weight among persons 20 years of age and over, according to sex, age, race, and Hispanic origin. 2003. Available at: http://www.cdc.gov/nchs/data/hus/tables/2003/03hus068.pdf. Accessed Nov, 28, 2006.

12. Felson DT, et al. Osteoarthritis: new insights. Part 1: the disease and its risk factors. Ann Intern Med. 2000;133(8):635-646.

13. Wright WL. Osteoarthritis management today. ADVANCE for Nurse Practitioners. 2004;12(9):24-29.

14. Hawker GA, et al. Differences between men and women in the rate of use of hip and knee arthroplasty. N Engl J Med. 2000;342(14):1016-1022.

15. Wider J. Gender specific joints: the wave of the future. Society for Women's Health Research. Available at: http://www.womenshealthresearch.org/site/News2?page=NewsArticle&id=6133&JServSessionIdr011=tz6osi7jt5.app2b. Accessed Nov. 28, 2006.