title: Acromioclavicular joint fixation using an acroplate combined with a coracoclavicular screw.
abstract: BACKGROUND
  Appropriate treatment of acromioclavicular joint dislocation is controversial. Acroplate fixation is one of the most common treatment methods of acromioclavicular joint (ACJ) dislocation. Based on the risk of re-dislocation after Acroplate fixation, we assumed that combined fixation with an Acroplate and a coracoclavicular screw helps improve the outcome.
  
  
  OBJECTIVE
  The main purpose of the current study was to compare the outcome of ACJ dislocation treated with an Acroplate alone and in combination with coracoclavicular screw.
  
  
  METHODS
  This study was carried out on 40 patients with ACJ dislocation types III to VI who were divided randomly into two equal groups: Acroplate group (P) and Acroplate in combination with coracoclavicular screw group (P + S). The screws were extracted 3-6 months postoperatively. The patients were followed for 1 year and Imatani's score was calculated. Finally, the data were compared between the groups.
  
  
  RESULTS
  The mean Imatani's score was significantly higher in P + S group (83.4 ± 14.1) than P group (81.2 ± 10.3) (P < 0.001). The mean duration of surgery was the same in the two groups (59.8 ± 9.4 minutes in group P V.s 64.3 ± 10.9 minutes in group P + S; P = 0.169). There were no cases of re-dislocation, degenerative changes and ossification and all patients returned to their previous jobs or sporting activities.
  
  
  CONCLUSIONS
  Using a coracoclavicular screw combined with an Acroplate can improve the patients' function after ACJ disruption without any significant increase in surgical duration. Authors recommend this technique in the fixation of ACJ dislocation.
authors.affiliation: Orthopedics Surgery Department, Beheshti University of Medical Sciences, Tehran, IR Iran.
authors.forename: Reza
authors.initials: R
authors.lastname: Tavakoli Darestani
authors.affiliation: Orthopedics Surgery Department, Beheshti University of Medical Sciences, Tehran, IR Iran.
authors.forename: Arash
authors.initials: A
authors.lastname: Ghaffari
authors.affiliation: Trauma Research Center, Kashan University of Medical Sciences, Kashan, IR Iran.
authors.forename: Mehrdad
authors.initials: M
authors.lastname: Hosseinpour
keywords: Acromioclavicular Joint; Acroplate; Bone Screw