title: Arthroscopic supraspinatus tendon repair with suture-bridging technique: functional outcome and magnetic resonance imaging.
abstract: BACKGROUND
  The suture-bridging technique is a new arthroscopic technique to repair rotator cuff tears. Biomechanical advantages compared with double-row fixations have been described.
  
  
  OBJECTIVE
  The authors hypothesized that arthroscopic suture-bridging repair of the supraspinatus tendon would result in a superior clinical outcome and lower retear rates compared with previously published results after double-row fixation.
  
  
  METHODS
  Case series; Level of evidence, 4.
  
  
  METHODS
  Fifty-one consecutive patients, with a median age of 62 years (range, 37-76 years), who had undergone an arthroscopic suture-bridging repair of an isolated supraspinatus tendon tear were evaluated in this prospective study 4, 12, and a median of 24 months postoperatively. Subjective and functional outcome was assessed using the simple shoulder test and Constant score. With magnetic resonance imaging 12 months postoperatively, the tendon integrity and potential predictors of failures were evaluated.
  
  
  RESULTS
  The simple shoulder test scores improved significantly from 9 points (range, 1-12 points) at 4 months, to 12 points (range, 1-12 points) at 12 months, and 12 points (range, 5-12 points) at 24 months postoperatively. The Constant score increased significantly from preoperative 64% (range, 37%-92%) to 82% (range, 36%-100%) at 4 months, 96% (range, 49%-100%) at 12 months, and 96% (range, 64%-100%) at 24 months postoperatively. Magnetic resonance imaging 12 months after surgery showed retears in 28.9%. Two different types of retears could be observed: insufficiently healed and medially retorn supraspinatus tendons. The Constant score did not differ significantly between the groups with retears and intact repairs. A patient age of more than 60 years was found to influence tendon healing significantly.
  
  
  CONCLUSIONS
  The hypothesis, that arthroscopic suture-bridging repair of the supraspinatus tendon would result in a superior clinical outcome and lower retear rates compared with previously published results after double-row fixation, could not be confirmed. The functional outcome after the new suture-bridging technique was good and comparable with the reported results after double-row repair from the literature. A structural failure of tendon repair was not identical to clinical failure.
authors.affiliation: Department of Trauma and Reconstructive Surgery, Friederikenstift Hospital Hannover, Hannover, Germany. christine.voigt@htp-tel.de
authors.forename: Christine
authors.initials: C
authors.lastname: Voigt
authors.forename: Christin
authors.initials: C
authors.lastname: Bosse
authors.forename: Rolf
authors.initials: R
authors.lastname: Vosshenrich
authors.forename: Arndt P
authors.initials: AP
authors.lastname: Schulz
authors.forename: Helmut
authors.initials: H
authors.lastname: Lill
mesh_terms: D000328:Adult; D000368:Aged; D001182:Arthroscopy / Q000379:methods*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D019637:Orthopedic Procedures / Q000379:methods; D011446:Prospective Studies; D016059:Range of Motion, Articular; D019651:Plastic Surgery Procedures / Q000379:methods; D017006:Rotator Cuff / Q000601:surgery*; D000070636:Rotator Cuff Injuries; D012421:Rupture / Q000175:diagnosis / Q000601:surgery; D013536:Suture Techniques; D013708:Tendon Injuries / Q000601:surgery*; D016896:Treatment Outcome