Although of only borderline significance, autoclaved autologous bone when used was nine times (0.95-85.71, P = 0.06) more likely to be associated with complications when compared with autologous bone used without autoclaving.
Although another paper has reported postoperative fluid collections including EDH and subgaleal collections necessitating operative interventions in 13 of 212 (6.1%) patients and found a difference in the rate of fluid collection complications with and without drain placement, with a trend toward significance ( P = 0.065), we found no statistically meaningful relationship between intraoperative placement of subgaleal vacuum drains and occurrence of postoperative subgaleal fluid collections ( P = 0.99).