title: The safety of simultaneous bilateral versus unilateral total knee arthroplasty: the experience in a Korean hospital.
abstract: BACKGROUND
  The safety of simultaneous bilateral total knee arthroplasty (SBTKA) remains controversial. This study aimed to compare the postoperative outcomes of SBTKA versus unilateral total knee arthroplasty (UTKA) performed by a single surgeon at a tertiary teaching hospital in Korea.
  
  
  METHODS
  629 female patients with total knee arthroplasty (308 patients for SBTKA and 321 for UTKA) performed under combined spinal epidural anaesthesia (CSE) were selected, and their medical records during admission and follow-up visits for a duration of six months after discharge were reviewed.
  
  
  RESULTS
  Although significantly higher incidences of postoperative confusion and hypoxia during hospitalisation and a longer hospital stay were demonstrated in the SBTKA group, the rates of serious postoperative complications, such as myocardial infarction and deep venous thrombosis, were not different between the groups during the hospital stay and six months afterwards. No death associated with the surgery was encountered in both groups.
  
  
  CONCLUSIONS
  It was concluded that SBTKA under CSE may be considered to be relatively safe in Korean female patients.
authors.affiliation: Department of Anaesthesiology and Pain Medicine, Samsung Medical Centre, Sungkyunkwan University School of Medicine, 50 Ilwon-Dong, Kangnam-Ku, Seoul 135-710, Korea.
authors.forename: Y H
authors.initials: YH
authors.lastname: Shin
authors.forename: M H
authors.initials: MH
authors.lastname: Kim
authors.forename: J S
authors.initials: JS
authors.lastname: Ko
authors.forename: J A
authors.initials: JA
authors.lastname: Park
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006784:Hospitals, Teaching / Q000706:statistics & numerical data; D006801:Humans; D015994:Incidence; D007723:Korea / Q000453:epidemiology; D007902:Length of Stay / Q000706:statistics & numerical data*; D008875:Middle Aged; D011183:Postoperative Complications / Q000453:epidemiology*; D012189:Retrospective Studies