title: Obese Patients Have Fewer Wound Complications Following Fixation of Ankle Fractures.
abstract: Outcomes following ankle fracture surgery have been well studied; however, factors associated with surgical wound healing specifically are less clear. We aimed to study the relationship between wound healing and body mass index, as well as other variables following surgical treatment of ankle fractures. There were 127 consecutive, isolated, closed, malleolar ankle fractures treated with open reduction and internal fixation at a level-1 trauma center from 2008 to 2012. Patient, injury, and treatment variables were recorded and clinical records were reviewed to identify wound complications. There were 6 major and 18 minor wound complications. The overall rate of wound complication of any type was significantly lower in obese patients at 11.7% (7/60) compared with 25.4% (17/67, P < .05) in nonobese patients. When controlling for other variables obesity was associated with a significantly lower risk of developing a wound complication (OR 0.267, 95% CI 0.087-0.822), as was low energy mechanism (OR 0.246, 95% CI 0.067-0.906). No other covariates tested were associated with an increased risk of a wound infection. Ankle anatomy may present a unique situation whereby obesity may be protective against wound complications. Further studies are needed to confirm this clinical observation, and to demonstrate the mechanism through which this may occur.
  
  
  METHODS
  Therapeutic, Level IV: Retrospective.
authors.affiliation: Duke University School of Medicine, Durham, North Carolina (APM, MPM, APDS, EBC).|University of North Carolina School of Medicine, Chapel Hill, North Carolina (SRH).|Louisiana State University Health Sciences Center, New Orleans, Louisiana (RDZ).
authors.forename: Andrew P
authors.initials: AP
authors.lastname: Matson
authors.affiliation: Duke University School of Medicine, Durham, North Carolina (APM, MPM, APDS, EBC).|University of North Carolina School of Medicine, Chapel Hill, North Carolina (SRH).|Louisiana State University Health Sciences Center, New Orleans, Louisiana (RDZ).
authors.forename: Michael P
authors.initials: MP
authors.lastname: Morwood
authors.affiliation: Duke University School of Medicine, Durham, North Carolina (APM, MPM, APDS, EBC).|University of North Carolina School of Medicine, Chapel Hill, North Carolina (SRH).|Louisiana State University Health Sciences Center, New Orleans, Louisiana (RDZ).
authors.forename: Ashwin
authors.initials: A
authors.lastname: Peres Da Silva
authors.affiliation: Duke University School of Medicine, Durham, North Carolina (APM, MPM, APDS, EBC).|University of North Carolina School of Medicine, Chapel Hill, North Carolina (SRH).|Louisiana State University Health Sciences Center, New Orleans, Louisiana (RDZ).
authors.forename: Eugene B
authors.initials: EB
authors.lastname: Cone
authors.affiliation: Duke University School of Medicine, Durham, North Carolina (APM, MPM, APDS, EBC).|University of North Carolina School of Medicine, Chapel Hill, North Carolina (SRH).|Louisiana State University Health Sciences Center, New Orleans, Louisiana (RDZ).
authors.forename: Shepard R
authors.initials: SR
authors.lastname: Hurwitz
authors.affiliation: Duke University School of Medicine, Durham, North Carolina (APM, MPM, APDS, EBC).|University of North Carolina School of Medicine, Chapel Hill, North Carolina (SRH).|Louisiana State University Health Sciences Center, New Orleans, Louisiana (RDZ).
authors.forename: Robert D
authors.initials: RD
authors.lastname: Zura
mesh_terms: D000328:Adult; D000368:Aged; D064386:Ankle Fractures / Q000000981:diagnostic imaging / Q000601:surgery*; D015992:Body Mass Index; D015331:Cohort Studies; D005260:Female; D005500:Follow-Up Studies; D005593:Fracture Fixation, Internal / Q000009:adverse effects / Q000379:methods*; D017102:Fracture Healing / Q000502:physiology; D006801:Humans; D015994:Incidence; D015601:Injury Severity Score; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009765:Obesity; D012189:Retrospective Studies; D012307:Risk Factors; D013530:Surgical Wound Infection / Q000175:diagnosis / Q000453:epidemiology*; D016896:Treatment Outcome
keywords: ankle injuries; fractures; infections; soft tissue repair; surgical complications; trauma