Measurement methods for wound size and results of wound size in the wound-size reductive change between both the groups. Figure 4-a demonstrates the wound measurement method. As a protocol, initially, measure the greatest length along the axial direction (head to toe), and then the greatest width along the transverse direction (side to side) using a centimeter ruler. Finally multiply distances of length and width to obtain an estimate of surface area in square centimeters (cm2). Figure 4-b indicates a statistically significant difference to the reducing change of wound size in two groups. Some patients had multiple locations for PU. Values are statistically compared. Student’s t-test, *p < 0.05, ***p < 0.001.