[1] [1] J. C. Y. Hu, K. A. Athanasiou, "Structure and function of articular cartilage," Handbook of Histology Methods for Bone and Cartilage, Y. H. An,K. L. Martin, Eds., pp. 73–95, Humana Press, Totowa, New Jersey, (2003).

[2] [2] V. C. Mow, W. Y. Gu, F. H. Chen, "Structure and function of articular cartilage and meniscus," Basic Orthopaedic Biomechanics and Mechano-Biology, R. H. Van, C. Mow, Eds., pp. 181–258, Lippincott Williams & Wilkins, Philadelphia, (2005).

[3] [3] V. C. Mow, X. E. Guo, "Mechano-electrochemical properties of articular cartilage: Their inhomogeneities and anisotropies," Ann. Rev. Biomed. Eng. 4, 175–209 (2002).

[4] [4] A. Maroudas, "Balance between swelling pressure and collagen tension in normal and degenerate cartilage," Nature 260, 808–809 (1976).

[5] [5] J. A. Buckwalter, H. J. Mankin, "Articular cartilage. 1. Tissue design and chondrocyte-matrix interactions," J. Bone Joint Surg. Am. 79A, 600–611 (1997).

[6] [6] S. S. Chen, Y. H. Falcovitz, R. Schneiderman, A. Maroudas, R. L. Sah, "Depth-dependent compressive properties of normal aged human femoral head articular cartilage: Relationship to FCD," Osteoarthritis and Cartilage 9, 561–569 (2001).

[7] [7] W. Wilson, J. M. Huyghe, C. C. V. Donkelaar, "Depth-dependent compressive equilibrium properties of articular cartilage explained by its composition," Biomech. Model Mechanobiol. 6, 43– 53 (2007).

[8] [8] K. D. Brandt, H. J. Mankin, L. E. Shulman, "Workshop on etiopathogenesis of osteoarthritis," J. Rheumatol 13, 1126–1160 (1986).

[9] [9] J. H. Yin, Y. Xia, "Macromolecular concentrations in bovine nasal cartilage by Fourier transform infrared imaging and principal component regression," Appl. Spectrosc. 64, 1199–1208 (2010).

[10] [10] J. H. Yin, Y. Xia, "Chemical visualization of individual chondrocytes in articular cartilage by attenuated- total-reflection Fourier transform infrared microimaging," Biomed. Opt. Express 2, 937–945 (2011).

[11] [11] Y. Xia, N. Ramakrishnan, A. Bidthanapally, "The depth-dependent anisotropy of articular cartilage by Fourier-transform infrared imaging (FTIRI)," Osteoarthritis and Cartilage 15, 780–788 (2007).

[12] [12] K. Potter, L. H. Kidder, I. W. Levin, E. N. Lewis, R. G. Spencer, "Imaging of collagen and proteoglycan in cartilage sections using Fourier transform infrared spectral imaging," Arthritis Rheum. 44, 846–855 (2001).

[13] [13] N. P. Camacho, P. West, P. A. Torzilli, R. Mendelsohn, "FTIR microscopic imaging of collagen and proteoglycan in bovine cartilage," Biopolymers 62, 1–8 (2001).

[14] [14] J. H. Lee, Y. Xia, Quantitative zonal differentiation of articular cartilage by microscopic magnetic resonance imaging, polarized light microscopy, and Fourier-transform infrared imaging, Microsci. Res. Tech. 76, 625–632 (2013).

[15] [15] X. Bi, X. Yang, M. P. G. Bostrom, D. Bartusik, S. Ramaswamy, K. W. Fishbein, R. G. Spencer, N. P. Camacho, "Fourier transform infrared imaging and MR microscopy studies detect compositional and structural changes in cartilage in a rabbit model of osteoarthritis," Anal. Bioanal. Chem. 387, 1601– 1612 (2007).

[16] [16] N. Ramakrishnan, Y. Xia, A. Bidthanapally, M. Lu, "Determination of zonal boundaries in articular cartilage using infrared dichroism," Appl. Spectrosc. 61, 1404–1409 (2007).

[17] [17] Y. Xia, H. Alhadlaq, N. Ramakrishnan, A. Bidthanapally, F. Badar, M. Lu, "Molecular and morphological adaptations in compressed articular cartilage by polarized light microscopy and Fourier-transform infrared imaging," J. Struct. Biol. 164, 88–95 (2008).

[18] [18] Ericka F. Calton, Jennifer MacLeay, Adele L. Boskey, "Fourier transform infrared imaging analysis of cancellous bone in alendronateand raloxifene-treated osteopenic sheep," Cells Tissues Organs 194, 302–306 (2011).

[19] [19] X. Bi, X. Yang, M. P. Bostrom, N. P. Camacho, "Fourier transform infrared imaging spectroscopy investigations in the pathogenesis and repair of cartilage," Biochim. Biophys. Acta 1758, 934–941 (2006).

[20] [20] J. A. Ryan, E. A. Eisner, G. DuRaine, Z. You, A. Hari Reddi, "Mechanical compression of articular cartilage induces chondrocyte proliferation and inhibits proteoglycan synthesis by activation of the ERK pathway: Implications for tissue engineering and regenerative medicine," J. Tissue Eng. Regen. Med. 3, 107–116 (2009).