title: Arthroscopic repair of anterosuperior rotator cuff tears: in-continuity technique vs. disruption of subscapularis-supraspinatus tear margin: comparison of clinical outcomes and structural integrity between the two techniques.
abstract: BACKGROUND
  The purpose of this study was to compare the clinical outcomes and structural integrity after two techniques of arthroscopic anterosuperior rotator cuff repair: in continuity and disruption of the tear margin.
  
  
  METHODS
  This study included fifty-nine patients who underwent arthroscopic repair of an anterosuperior rotator cuff tear that was done either by disrupting the margin between the subscapularis and supraspinatus tears (Group A) or by performing the repair in continuity without disrupting the margin (Group B). Clinical outcomes were assessed on the basis of a visual analog scale (VAS) pain score, subjective shoulder value (SSV), American Shoulder and Elbow Surgeons (ASES) score, University of California at Los Angeles (UCLA) shoulder score, and active range of motion of the shoulder. Subscapularis strength was assessed with use of the modified belly-press test. Magnetic resonance arthrography (MRA) or computed tomographic arthrography (CTA) was performed at six months after surgery to assess the structural integrity of the repair.
  
  
  RESULTS
  At the two-year follow-up evaluation, VAS pain scores, SSVs, ASES scores, UCLA shoulder scores, subscapularis strength, and active range of motion improved significantly in both groups compared with preoperatively (p < 0.001). There were no significant differences between groups for any of these follow-up measurements. On follow-up MRA or CTA, the overall retear rate did not differ significantly different between Group A (22%; five of twenty-three) and Group B (19%; six of thirty-two).
  
  
  CONCLUSIONS
  In conclusion, in patients treated with arthroscopic repair of anterosuperior full-thickness subscapularis and supraspinatus tears of the rotator cuff, the technique of in-continuity repair did not produce better clinical outcomes or structural integrity than the technique involving disruption of the tear margin. If the muscle in an anterosuperior rotator cuff tear is of good quality, it does not appear to matter whether the tear margin between the subscapularis and supraspinatus is preserved or disrupted.
authors.affiliation: Department of Orthopaedic Surgery, Arthroscopy and Joint Research Institute, Severance Hospital, Yonsei University College of Medicine, CPO Box 8044, 134, Shinchon-dong, Seodaemun-gu, Seoul 120-752, South Korea. E-mail address for Y.-M. Chun: min1201@hanmail.net.
authors.forename: Sung-Jae
authors.initials: SJ
authors.lastname: Kim
authors.affiliation: Department of Orthopaedic Surgery, Arthroscopy and Joint Research Institute, Severance Hospital, Yonsei University College of Medicine, CPO Box 8044, 134, Shinchon-dong, Seodaemun-gu, Seoul 120-752, South Korea. E-mail address for Y.-M. Chun: min1201@hanmail.net.
authors.forename: Min
authors.initials: M
authors.lastname: Jung
authors.affiliation: Department of Orthopaedic Surgery, Arthroscopy and Joint Research Institute, Severance Hospital, Yonsei University College of Medicine, CPO Box 8044, 134, Shinchon-dong, Seodaemun-gu, Seoul 120-752, South Korea. E-mail address for Y.-M. Chun: min1201@hanmail.net.
authors.forename: Jae-Hoo
authors.initials: JH
authors.lastname: Lee
authors.affiliation: Department of Orthopaedic Surgery, Arthroscopy and Joint Research Institute, Severance Hospital, Yonsei University College of Medicine, CPO Box 8044, 134, Shinchon-dong, Seodaemun-gu, Seoul 120-752, South Korea. E-mail address for Y.-M. Chun: min1201@hanmail.net.
authors.forename: Chul
authors.initials: C
authors.lastname: Kim
authors.affiliation: Department of Orthopaedic Surgery, Arthroscopy and Joint Research Institute, Severance Hospital, Yonsei University College of Medicine, CPO Box 8044, 134, Shinchon-dong, Seodaemun-gu, Seoul 120-752, South Korea. E-mail address for Y.-M. Chun: min1201@hanmail.net.
authors.forename: Yong-Min
authors.initials: YM
authors.lastname: Chun
mesh_terms: D000368:Aged; D001182:Arthroscopy / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017006:Rotator Cuff / Q000601:surgery*; D000070636:Rotator Cuff Injuries; D012782:Shoulder / Q000601:surgery*; D013708:Tendon Injuries / Q000601:surgery*; D016896:Treatment Outcome