Results of a typical case on time-dependent wound-healing progress. An annual time-dependent wound healing progress for an 85-year-old female PU patient is reported. She was admitted to the hospital seeking treatment to PU. Figure 6-a demonstrates photographs for the time-dependent wound-healing progress obtained from the same patient. Figures 6-b to -d represent the decreased tendencies of wound size, DESIGN-rating, and stage, respectively.