Figure 1.

Joint and disc anatomy with depth dependent regional zone highlighted. Schematic joint anatomy with disc placement and orientation elucidated and SEM micrographs of the TMJ disc. The superior and inferior disc architecture has key differences which can be seen at low magnification and are accentuated at higher magnification. The superior disc surface is segmented into what appear to be several distinct surface regions before presenting the bulk architectural ECM matrix construction while the inferior surface appears to have one dense uniform surface region which appears more fibrous and linearized.