title: Obesity is a major risk factor for the development of complications after peri-acetabular osteotomy.
abstract: Obesity is a risk factor for complications following many orthopaedic procedures. The purpose of this study was to investigate whether obesity was an independent risk factor increasing the rate of complications following periacetabular osteotomy (PAO) and to determine whether radiographic correction after PAO was affected by obesity. We retrospectively collected demographic, clinical and radiographic data on 280 patients (231 women; 82.5% and 49 men; 17.5%) who were followed for a mean of 48 months (12 to 60) after PAO. A total of 65 patients (23.2%) were obese (body mass index (BMI) > 30 kg/m(2)). Univariate and multivariate analysis demonstrated that BMI was an independent risk factor associated with the severity of the complications. The average probability of a patient developing a major complication was 22% (95% confidence interval (CI) 11.78 to 38.21) for an obese patient compared with 3% (95% CI 1.39 to 6.58) for a non-obese patient The odds of a patient developing a major complication were 11 times higher (95% CI 4.71 to 17.60, p < 0.0001) for an obese compared with a non-obese patient. Following PAO surgery, there was no difference in radiographic correction between obese and non-obese patients. PAO procedures in obese patients correct the deformity effectively but are associated with an increased rate of complications.
authors.affiliation: Department of Orthopaedic Surgery, Children's Hospital Colorado, University of Colorado School of Medicine, 13123 East 16th Avenue, Aurora Co, 80045, USA.
authors.forename: E N
authors.initials: EN
authors.lastname: Novais
authors.affiliation: Department of Orthopaedic Surgery, Mayo Clinic, 200 First Street SW, Rochester, Minnesota 55905, USA.
authors.forename: G D
authors.initials: GD
authors.lastname: Potter
authors.affiliation: Department of Orthopaedic Surgery, Washington University School of Medicine One Barnes-Jewish Hospital Plaza, Suite 11300 West Pavilion, Campus Box 8233, St Louis, Missouri 63110, USA.
authors.forename: J C
authors.initials: JC
authors.lastname: Clohisy
authors.affiliation: Department of Orthopaedic Surgery, Children's Hospital Boston, 300 Longwood Avenue, Boston, Massachusetts 02115, USA.
authors.forename: M B
authors.initials: MB
authors.lastname: Millis
authors.affiliation: Department of Orthopaedic Surgery, Children's Hospital Boston, 300 Longwood Avenue, Boston, Massachusetts 02115, USA.
authors.forename: Y J
authors.initials: YJ
authors.lastname: Kim
authors.affiliation: Department of Orthopaedic Surgery, Mayo Clinic, 200 First Street SW, Rochester, Minnesota 55905, USA.
authors.forename: R T
authors.initials: RT
authors.lastname: Trousdale
authors.affiliation: Department of Orthopaedic Surgery, Children's Hospital Colorado, University of Colorado School of Medicine, 13123 East 16th Avenue, Aurora Co, 80045, USA.
authors.forename: P M
authors.initials: PM
authors.lastname: Carry
authors.affiliation: Department of Orthopaedic Surgery, Mayo Clinic, 200 First Street SW, Rochester, Minnesota 55905, USA.
authors.forename: R J
authors.initials: RJ
authors.lastname: Sierra
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging / Q000601:surgery*; D000328:Adult; D017677:Age Distribution; D015992:Body Mass Index; D016009:Chi-Square Distribution; D015331:Cohort Studies; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015994:Incidence; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009765:Obesity / Q000150:complications* / Q000175:diagnosis; D010027:Osteotomy / Q000009:adverse effects* / Q000379:methods; D011183:Postoperative Complications / Q000000981:diagnostic imaging / Q000453:epidemiology* / Q000209:etiology; D011859:Radiography; D012189:Retrospective Studies; D018570:Risk Assessment; D012720:Severity of Illness Index; D017678:Sex Distribution; D013997:Time Factors; D055815:Young Adult
keywords: BMI; Complications; Obesity; Periacetabular Osteotomy