1. Articular Cartilage Repair of the Knee" Karen Hambly, www.cartilagehealth.com/acr.html
2. Wang, Y.; Ding, C.; Wluka, A. E.; Davis, S.; Ebeling, P. R.; Jones, G.; Cicuttini, F. M. (2006). "Factors affecting progression of knee cartilage defects in normal subjects over 2 years". Rheumatology 45 (1): 79–84
3. Hunter W. On the structure and diseases of articulating cartilages. Trans R Soc Lond 1743;42B:514-21
4. Caplan A, Elyaderani M, Mochizuki Y, et al. Overview of cartilage repair and regeneration: principles of cartilage repair and regeneration Clin Orthop
5. Poole A. What type of cartilage repair are we attempting to attain? J Bone Joint Surg Am 2003