Figure 2:   OCT of normal cartilage. The OCT image (top) shows clearly defined bone (b), cartilage (c), and cartilage/bone interface (red arrows). The green arrow shows polarization sensitivity, which will be discussed in greater detail in the following sections. Masson’s Trichrome histology (bottom) confirms OCT imaging, with clearly defined bone and cartilage. Image courtesy of Hermann et al. [6].