Fig. 2From: Pressure ulcer-related pelvic osteomyelitis: evaluation of a two-stage surgical strategy (debridement, negative pressure therapy and flap coverage) with prolonged antimicrobial therapyKaplan Meier curves for cumulative probability of treatment failure-free survival according to the two main risk factors highlighted in multivariate analysis, i.e., an history of previous ulcer at the same site (a) and Actinomyces spp. infection (b)Back to article page