title: Subjective and objective outcome after revision arthroscopic stabilization for recurrent anterior instability versus initial shoulder stabilization.
abstract: BACKGROUND
  The value of arthroscopic revision shoulder stabilization after failed instability repair is still a matter of debate.
  
  
  OBJECTIVE
  Arthroscopic revision shoulder stabilization using suture anchors provides equivalent subjective and objective results compared with initial arthroscopic instability repair.
  
  
  METHODS
  Cohort study; Level of evidence, 3.
  
  
  METHODS
  Twenty consecutive patients who underwent arthroscopic revision shoulder stabilization using suture anchors (group 2) were matched for age, gender, and handedness (dominant or nondominant) with 20 patients who had initial arthroscopic instability repair using the same technique (group 1). At the time of follow-up, a complete physical examination of both shoulders and evaluation with the Rowe score, Walch-Duplay score, Melbourne Instability Shoulder Score, Western Ontario Shoulder Instability Index, and the Subjective Shoulder Value were performed. In addition, standard radiographs (true AP and axillary views) were taken to evaluate signs of osteoarthritis.
  
  
  RESULTS
  After a minimum follow-up of 24 months, no recurrent dislocations were observed in either group. The apprehension sign was positive in 2 cases of revision surgery (0 vs 2; P > .05). No significant differences in the Rowe score (89 vs 81.8 points) were found between groups 1 and 2 (P > .05). However, group 2 revealed significantly lower scores in the Walch-Duplay score (85.3 vs 75.5 points), Melbourne Instability Shoulder Score (90.2 vs 73.7 points), Western Ontario Shoulder Instability Index (89.8% vs 68.9%), and Subjective Shoulder Value (91.8% vs 69.2%) (P < .05). Signs of instability arthropathy were found more often in patients with arthroscopic revision surgery (2 vs 5; P > .05).
  
  
  CONCLUSIONS
  Arthroscopic revision shoulder stabilization is associated with a lower subjective outcome compared with initial arthroscopic stabilization. The objective results found in this study may overestimate the clinical outcome in this patient population.
authors.affiliation: Center for Musculoskeletal Surgery, Charité-Universitaetsmedizin Berlin, Germany.
authors.forename: David
authors.initials: D
authors.lastname: Krueger
authors.forename: Natascha
authors.initials: N
authors.lastname: Kraus
authors.forename: Stephan
authors.initials: S
authors.lastname: Pauly
authors.forename: Jianhai
authors.initials: J
authors.lastname: Chen
authors.forename: Markus
authors.initials: M
authors.lastname: Scheibel
mesh_terms: D000293:Adolescent; D000328:Adult; D001182:Arthroscopy / Q000379:methods*; D015331:Cohort Studies; D005260:Female; D006801:Humans; D004204:Joint Dislocations / Q000601:surgery; D007593:Joint Instability / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D016059:Range of Motion, Articular; D012086:Reoperation / Q000379:methods*; D012189:Retrospective Studies; D012785:Shoulder Joint / Q000601:surgery*; D053441:Suture Anchors; D016896:Treatment Outcome; D055815:Young Adult