Fig. 2

Representative intraoperatively acquired pressure ulcers (a) left side of upper column, pressure ulcer developed on the ASIS of patient number 1; (b) right side of upper column, PU developed on the sacrum of patient number 2; (c) left side of lower column, PU developed on the pubis of patient number 3; and (d) right side of lower column, PU in patient number 3 one year after surgery. The numbers of patients who were categorized as having completely healed pressure ulcer are listed in Table 2