1. Lawrence RC, Felson DT, Helmick CG, et al.; National Arthritis Data Workgroup. Estimates of the prevalence of arthritis and other rheumatic conditions in the United States: part II. Arthritis Rheum. 2008;58(1):26–35. https://doi.org/10.1002/art.23176.
2. Stitik T, Kim JH, Stiskal D, et al. Osteoarthritis. In: Delisa J, Frontera W, editors. Delisa’s physical medicine and rehabilitation: principles and practices. 5th ed. Philadelphia: Lippincott Williams & Wilkins; 2010. p. 781–810.
3. Kuyinu EL, Narayanan G, Nair LS, Laurencin CT. Animal models of osteoarthritis: classification, update, and measurement of outcomes. J Orthop Surg Res. 2016;11:19. https://doi.org/10.1186/s13018-016-0346-5.
4. Goldberg C. A practical guide to clinical medicine. San Diego: University of California San Diego School of Medicine; updated 2015 Oct [cited 2017 Jul 12]. Available from: https://meded.ucsd.edu/clinicalmed/joints.htm.
5. Sarwark MD. Arthritis of the knee. In: Sarwark JF, editor. Essentials of musculoskeletal care. 4th ed. Rosemont: American Academy of Orthopedic Surgeons; 2010. p. 650–6.