title: Mid-term results of Oxford Phase 3 unicompartmental knee arthroplasty in obese patients.
abstract: OBJECTIVE
  The aim of this study was to evaluate the mid-term outcomes of Oxford Phase 3 unicompartmental knee arthroplasty (UKA) in obese patients in terms of prosthesis survival, progression of lateral compartment arthrosis and functional outcomes.
  
  
  METHODS
  The study included 67 patients, with a body mass index over 30, treated with mobile bearing Oxford Phase 3 UKA for isolated medial osteoarthritis between January 2005 and December 2010. Preoperative and postoperative knee range of motion (ROM) and knee scores (Hospital for Special Surgery, HSS and Oxford knee scores) were compared. Additionally, prostheses were evaluated using Oxford radiographic evaluation criteria at the final follow-up.
  
  
  RESULTS
  Mean age was 61 years and mean follow-up was 67.5 months. Insert dislocation occurred in 3 patients (4.5%). Postoperative knee ROM, HSS and Oxford knee scores were significantly improved (p<0.05). There was no sign of prosthesis failure or lateral compartment arthrosis in radiographic evaluation at the final follow-up.
  
  
  CONCLUSIONS
  Oxford Phase 3 UKA with mobile bearing has good mid-term results in obese patients over 60 years of age.
authors.affiliation: Department of Orthopedics and Traumatology, Taksim Training and Research Hospital, İstanbul, Turkey. drserdarcepni@gmail.com.
authors.forename: Serdar Kamil
authors.initials: SK
authors.lastname: Cepni
authors.affiliation: Department of Orthopedics and Traumatology, Taksim Training and Research Hospital, İstanbul, Turkey.
authors.forename: Armağan
authors.initials: A
authors.lastname: Arslan
authors.affiliation: Department of Orthopedics and Traumatology, Taksim Training and Research Hospital, İstanbul, Turkey.
authors.forename: Halil
authors.initials: H
authors.lastname: Polat
authors.affiliation: Department of Orthopedics and Traumatology, Taksim Training and Research Hospital, İstanbul, Turkey.
authors.forename: Atilla
authors.initials: A
authors.lastname: Yalçin
authors.affiliation: Department of Orthopedics and Traumatology, Taksim Training and Research Hospital, İstanbul, Turkey.
authors.forename: Atilla Sancar
authors.initials: AS
authors.lastname: Parmaksizoğlu
mesh_terms: D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects / Q000379:methods / Q000534:rehabilitation / Q000706:statistics & numerical data; D015992:Body Mass Index; D015897:Comorbidity; D004185:Disability Evaluation; D018450:Disease Progression; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000601:surgery; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000175:diagnosis / Q000453:epidemiology*; D020370:Osteoarthritis, Knee / Q000453:epidemiology / Q000601:surgery; D011183:Postoperative Complications / Q000175:diagnosis*; D011474:Prosthesis Design; D011475:Prosthesis Failure / Q000209:etiology*; D011859:Radiography; D016059:Range of Motion, Articular; D020127:Recovery of Function; D016896:Treatment Outcome; D014421:Turkey