title: Genu Recurvatum versus Fixed Flexion after Total Knee Arthroplasty.
abstract: BACKGROUND
  To date, there is no study comparing outcomes between post-total knee replacement genu recurvatum and fixed flexion. This study aims to provide data that will help in deciding which side to err on when neutral extension is not achieved.
  
  
  METHODS
  A prospective cohort study of primary total knee arthroplasties was performed, which compared the 6-month and 2-year clinical outcomes between fixed flexion and genu recurvatum deformities at 6 months.
  
  
  RESULTS
  At 6 months, knees in genu recurvatum did better than knees in fixed flexion deformity in terms of knee flexion. However, at 2 years, knees in fixed flexion deformity did better in terms of knee scores and showed better improvement in the degree of deformity.
  
  
  CONCLUSIONS
  We conclude that it is better to err on the side of fixed flexion deformity if neutral alignment cannot be achieved.
authors: Department of Orthopaedic Surgery, Singapore General Hospital, Singapore, Singapore.
authors: Kevin
authors: K
authors: Koo
authors: Department of Orthopaedic Surgery, Singapore General Hospital, Singapore, Singapore.
authors: Amila
authors: A
authors: Silva
authors: Department of Orthopaedic Surgery, Singapore General Hospital, Singapore, Singapore.
authors: Hwei Chi
authors: HC
authors: Chong
authors: Department of Orthopaedic Surgery, Singapore General Hospital, Singapore, Singapore.
authors: Pak Lin
authors: PL
authors: Chin
authors: Department of Orthopaedic Surgery, Singapore General Hospital, Singapore, Singapore.
authors: Shi Lu
authors: SL
authors: Chia
authors: Department of Orthopaedic Surgery, Singapore General Hospital, Singapore, Singapore.
authors: Ngai Ngung
authors: NN
authors: Lo
authors: Department of Orthopaedic Surgery, Singapore General Hospital, Singapore, Singapore.
authors: Seng Jin
authors: SJ
authors: Yeo
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects* / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000503:physiopathology* / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D016059:Range of Motion, Articular; D016896:Treatment Outcome
keywords: Arthroplasty; Deformity; Flexion; Knee; Recurvatum