title: [Plate osteosynthesis after patellar fracture - the technique and initial results of a prospective study].
abstract: BACKGROUND
  Tension band wiring after patellar fractures is related to a high number of implant-related complications (22-53 %). Revision surgery is necessary in 10-55 % of patients mostly with unsatisfactory results. The patella plate is an alternative treatment with the advantages of locked plating. The purpose of this study was to evaluate the first clinical prospective results and complications of this new implant.
  
  
  METHODS
  Between April 2013 and May 2015 all patients that were treated with locked plating for patella fractures were included in this prospective study. Patients were followed-up clinically after six weeks and six months.
  
  
  RESULTS
  Included in this study were 17 patients, 6 women and 11 men, with a mean age of 58 years (19-87). The knee range of motion was 120° after 6 weeks and improved to 138° after 6 months, corresponding to 84 % and 97 % of the range of motion of the healthy opposite knee. The Tegner activity scale increased from 2,5 to 3,5 (initial value: 4), the Lysholm score increased from 78 to 92 points (initial value: 97) and the Kujala score increased from 72 to 88 points (initial value: 96). Two complications occurred: one patient had a reactive bursitis prepatellaris and one patient sustained a loss of reduction.
  
  
  CONCLUSIONS
  Locked plating of patella fractures is a reliable alternative treatment with good functional outcomes and low complication rates.
authors.affiliation: Klinik für Orthopädie und Unfallchirurgie, BG Klinikum Hamburg im DIAKOVERE Friederikenstift, Humboldtstr. 5, 30169, Hannover, Deutschland. alexander.ellwein@diakovere.de.
authors.forename: A
authors.initials: A
authors.lastname: Ellwein
authors.affiliation: Klinik für Orthopädie und Unfallchirurgie, BG Klinikum Hamburg im DIAKOVERE Friederikenstift, Humboldtstr. 5, 30169, Hannover, Deutschland.
authors.forename: H
authors.initials: H
authors.lastname: Lill
authors.affiliation: Klinik für Orthopädie und Unfallchirurgie, BG Klinikum Hamburg im DIAKOVERE Friederikenstift, Humboldtstr. 5, 30169, Hannover, Deutschland.
authors.forename: G
authors.initials: G
authors.lastname: Jensen
authors.affiliation: Orthopädische Klinik, Herzogin Elisabeth Hospital, Braunschweig, Deutschland.
authors.forename: A
authors.initials: A
authors.lastname: Gruner
authors.affiliation: Klinik für Orthopädie und Unfallchirurgie, BG Klinikum Hamburg im DIAKOVERE Friederikenstift, Humboldtstr. 5, 30169, Hannover, Deutschland.
authors.forename: J C
authors.initials: JC
authors.lastname: Katthagen
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001860:Bone Plates; D001863:Bone Screws; D005260:Female; D005500:Follow-Up Studies; D005593:Fracture Fixation, Internal; D006801:Humans; D007719:Knee Joint / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D010329:Patella / Q000293:injuries*; D011183:Postoperative Complications / Q000209:etiology / Q000503:physiopathology; D011446:Prospective Studies; D016059:Range of Motion, Articular / Q000502:physiology; D055815:Young Adult
keywords: Complications; Locked plating; Patellar fracture; Tension-band wiring