title: Safety of pregnancy and delivery after total hip arthroplasty.
abstract: BACKGROUND
  Total hip arthroplasty (THA) is performed on young as well as older patients. Women in particular, because of a higher incidence of congenital hip dislocation, often undergo THA during the reproductive years.
  
  
  METHODS
  We surveyed 143 women with THA regarding pregnancy and childbirth after surgery. Their mean age at surgery was 34.4 years; the mean follow-up period was 6.4 years.
  
  
  RESULTS
  Fourteen of 143 women (10%) had a successful pregnancy after THA; 19 infants were born. The infants were delivered vaginally in only 1 case and by cesarean section in the remaining 13. Pregnancy was normal for all of them. The mean weight gain was 12.3 kg, and the mean weight of the babies at birth was 2.870 kg for females and 3.110 kg for males. Sixty-three percent of the infants were breastfed for 10 months. One woman of the 14 of the mother group (7.1%) and 8 of the 144 of the nonmother group (5.6%) underwent prosthesis revision. The difference is not statistically significant.
  
  
  CONCLUSIONS
  After adjusting for age and diagnosis, Cox's proportional hazards analysis confirmed that pregnancy and childbirth do not represent risk factors for THA survival.
authors.affiliation: Laboratorio di Tecnologia Medica, Istituti Ortopedici Rizzoli, Bologna, Italy. stea@tecno.ior.it
authors.forename: Susanna
authors.initials: S
authors.lastname: Stea
authors.forename: Barbara
authors.initials: B
authors.lastname: Bordini
authors.forename: Manuela
authors.initials: M
authors.lastname: De Clerico
authors.forename: Francesco
authors.initials: F
authors.lastname: Traina
authors.forename: Aldo
authors.initials: A
authors.lastname: Toni
mesh_terms: D000203:Activities of Daily Living; D000328:Adult; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology* / Q000209:etiology; D011256:Pregnancy Outcome / Q000453:epidemiology*; D011788:Quality of Life; D012307:Risk Factors; D011795:Surveys and Questionnaires; D016387:Women's Health