title: The results of biplanar distal femoral osteotomy; a case series study.
abstract: BACKGROUND
  Distal femur wedge osteotomies for varus or valgus alignment of the lower extremity could be done in either uniplanar or biplanar fashion.Union time and stability of the osteotomy site has been considered important in this anatomic region. In this study, clinical and radiographic findings of biplane distal femur osteotomy were reported.
  
  
  METHODS
  Clinical, functional, and radiological findings of eight patients (10 knees) underwent biplane distal femur osteotomy were evaluated. Visual analogue score (VAS) and Lysholm-Tegner knee score were used for the assessment of pain and function before and three months after surgery.
  
  
  RESULTS
  In this study, eight patients were included. All patients were female. The mean age was 28±6.3. The mean pre-operative mechanical angle was 8.7±2.2° and the post-operative angle was 1.4±0.53° in patients with valgus alignment whileit was 7.0±1.0°preoperatively and 0.66±1.2° postoperatively in patients with varus alignment. The mean lateral distal femoral angle (LDFA) was 85±8.0° before surgery and was 88±1.3° after surgery. According to Lysholm-Tegner knee score, in the post-operative visit, six knees were good and four were excellent. The mean union time was 9.2±2.3 weeks.
  
  
  CONCLUSIONS
  Biplane distal femur osteotomy is a reliable technique that creates larger surfaces and more stability at the osteotomy site with further rapid union.
authors.affiliation: Abolfazl Bagherifard MD, Hosein Ali Hadi MD, Mahmoud Jabalameli MD, Mohammad Rahbar MD, Hooman Yahyazadeh MD, Mahdi Abbaszadeh MD, Shafa Orthopedic Hospital, Iran University of Medical Sciences, Tehran, Iran.
authors.forename: Abolfazl
authors.initials: A
authors.lastname: Bagherifard
authors.affiliation: Abolfazl Bagherifard MD, Hosein Ali Hadi MD, Mahmoud Jabalameli MD, Mohammad Rahbar MD, Hooman Yahyazadeh MD, Mahdi Abbaszadeh MD, Shafa Orthopedic Hospital, Iran University of Medical Sciences, Tehran, Iran.
authors.forename: Mahmoud
authors.initials: M
authors.lastname: Jabalameli
authors.affiliation: Abolfazl Bagherifard MD, Hosein Ali Hadi MD, Mahmoud Jabalameli MD, Mohammad Rahbar MD, Hooman Yahyazadeh MD, Mahdi Abbaszadeh MD, Shafa Orthopedic Hospital, Iran University of Medical Sciences, Tehran, Iran.
authors.forename: Hosein Ali
authors.initials: HA
authors.lastname: Hadi
authors.affiliation: Abolfazl Bagherifard MD, Hosein Ali Hadi MD, Mahmoud Jabalameli MD, Mohammad Rahbar MD, Hooman Yahyazadeh MD, Mahdi Abbaszadeh MD, Shafa Orthopedic Hospital, Iran University of Medical Sciences, Tehran, Iran.
authors.forename: Mohammad
authors.initials: M
authors.lastname: Rahbar
authors.affiliation: Abolfazl Bagherifard MD, Hosein Ali Hadi MD, Mahmoud Jabalameli MD, Mohammad Rahbar MD, Hooman Yahyazadeh MD, Mahdi Abbaszadeh MD, Shafa Orthopedic Hospital, Iran University of Medical Sciences, Tehran, Iran.
authors.forename: Tahmineh
authors.initials: T
authors.lastname: Mokhtari
authors.affiliation: Abolfazl Bagherifard MD, Hosein Ali Hadi MD, Mahmoud Jabalameli MD, Mohammad Rahbar MD, Hooman Yahyazadeh MD, Mahdi Abbaszadeh MD, Shafa Orthopedic Hospital, Iran University of Medical Sciences, Tehran, Iran.
authors.forename: Hooman
authors.initials: H
authors.lastname: Yahyazadeh
authors.affiliation: Abolfazl Bagherifard MD, Hosein Ali Hadi MD, Mahmoud Jabalameli MD, Mohammad Rahbar MD, Hooman Yahyazadeh MD, Mahdi Abbaszadeh MD, Shafa Orthopedic Hospital, Iran University of Medical Sciences, Tehran, Iran.
authors.forename: Mahdi
authors.initials: M
authors.lastname: Abbaszadeh
authors.affiliation: Abolfazl Bagherifard MD, Hosein Ali Hadi MD, Mahmoud Jabalameli MD, Mohammad Rahbar MD, Hooman Yahyazadeh MD, Mahdi Abbaszadeh MD, Shafa Orthopedic Hospital, Iran University of Medical Sciences, Tehran, Iran.
authors.forename: Ali
authors.initials: A
authors.lastname: Jahansouz
keywords: Biplane Osteotomy; Lysholm-Tegner Knee Score; Visual Analogue Scale