title: [Arthroscopically assisted reduction of acute acromioclavicular joint separations: comparison of clinical and radiological results of single versus double TightRope™ technique].
abstract: BACKGROUND
  The aim of this study was to compare the results of the single (STR) versus double TightRope™ (DTR) technique for stabilisation of acute separations of the AC joint with the hypothesis that DTR achieves lower CC distance.
  
  
  METHODS
  A total of 29 consecutive patients treated operatively with the TR technique (mean age 38.1 years, n=26 male) were analysed in a cohort study with a mean follow-up of 13.3 months (12.0-21.7). Acute AC joint separations types III and V according to Rockwood (R) were included; R types I, II, IV and VI were excluded. The prospective scores determined pre-op and 3, 6 and 12 months post-op and X-rays were evaluated.
  
  
  RESULTS
  Of the patients 12 suffered an R type III and 17 an R V separation; 14 were treated with STR and 15 with DTR. With STR, 8 R III and 6 R V injuries and with DTR 4 R III and 11 R V injuries were treated arthroscopically. STR achieved an increased CC distance >125% compared to the contralateral AC joint in five cases (36%). Two of them occurred as R V and three as R III injury. DTR achieved a CC distance >125% in two cases of an R V injury (13%).
  
  
  CONCLUSIONS
  The DTR technique provides lower CC distance compared to the STR technique, without a significant difference of CC distance and scores.
authors.affiliation: Orthopädische Klinik, Universitätsklinikum Düsseldorf, Moorenstrasse 5, 40223, Düsseldorf, Deutschland. th.patzer@web.de
authors.forename: T
authors.initials: T
authors.lastname: Patzer
authors.forename: C
authors.initials: C
authors.lastname: Clauss
authors.forename: C A
authors.initials: CA
authors.lastname: Kühne
authors.forename: E
authors.initials: E
authors.lastname: Ziring
authors.forename: T
authors.initials: T
authors.lastname: Efe
authors.forename: S
authors.initials: S
authors.lastname: Ruchholtz
authors.forename: D
authors.initials: D
authors.lastname: Mann
mesh_terms: D000173:Acromioclavicular Joint / Q000293:injuries* / Q000601:surgery*; D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D001182:Arthroscopy / Q000295:instrumentation* / Q000379:methods; D005260:Female; D006801:Humans; D004204:Joint Dislocations / Q000175:diagnosis* / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D016059:Range of Motion, Articular; D019651:Plastic Surgery Procedures / Q000295:instrumentation*; D013536:Suture Techniques / Q000295:instrumentation*; D016896:Treatment Outcome; D055815:Young Adult