title: Cannulated screw and cable are superior to modified tension band in the treatment of transverse patella fractures.
abstract: BACKGROUND
  Although the modified tension band technique (eg, tension band supplemented by longitudinal Kirschner wires) has long been the mainstay for fixation of transverse fractures of the patella, it has shortcomings, such as bad reduction, loosening of implants, and skin irritation.
  
  
  OBJECTIVE
  We conducted a retrospective comparison of the modified tension band technique and the titanium cable-cannulated screw tension band technique.
  
  
  METHODS
  We retrospectively reviewed 101 patients aged 22 to 85 years (mean, 56.6 years) with AO/OTA 34-C1 fractures (n = 68) and 34-C2 fractures (n = 33). Fifty-two patients were in the modified tension band group and 49 were in the titanium cable-cannulated screw tension band group. Followup was at least 1 year (range, 1-3 years). Comparison criteria were fracture reduction, fracture healing time, and the Iowa score for knee function.
  
  
  RESULTS
  The titanium cable-cannulated screw tension band group showed improved fracture reduction, reduced healing time, and better Iowa score, compared with the modified tension band group. In the modified tension band group, eight patients experienced wire migration, three of these requiring a second operation. There were no complications in the titanium cable-cannulated screw tension band group.
  
  
  CONCLUSIONS
  The titanium cable-cannulated screw tension band technique showed superior results and should be considered as an alternative method for treatment of transverse patellar fractures.
  
  
  METHODS
  Level III, therapeutic study. See the Guidelines for Authors for a complete description of levels of evidence.
authors.affiliation: Department of Orthopaedics, Third Hospital of Peking University, Beijing 100191, China. tianyunbj@sina.com
authors.forename: Yun
authors.initials: Y
authors.lastname: Tian
authors.forename: Fang
authors.initials: F
authors.lastname: Zhou
authors.forename: Hongquan
authors.initials: H
authors.lastname: Ji
authors.forename: Zhishan
authors.initials: Z
authors.lastname: Zhang
authors.forename: Yan
authors.initials: Y
authors.lastname: Guo
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001863:Bone Screws; D001864:Bone Wires; D004867:Equipment Design; D005260:Female; D005593:Fracture Fixation, Internal / Q000379:methods*; D050723:Fractures, Bone / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D016268:Internal Fixators; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D010329:Patella / Q000000981:diagnostic imaging / Q000293:injuries*; D011475:Prosthesis Failure; D011859:Radiography; D012189:Retrospective Studies; D014025:Titanium; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D014025:Titanium