title: Clinical outcome of arthroscopic SLAP repair: conventional vertical knot versus knotless horizontal mattress sutures.
abstract: OBJECTIVE
  Arthroscopic repair of type II superior labrum anterior to posterior (SLAP) tears yields variable results. In this study, the clinical outcomes of arthroscopic knotless horizontal mattress repair were compared to those of conventional vertical knot repair.
  
  
  METHODS
  Forty-six patients treated arthroscopically for isolated SLAP lesions were assessed. Forty-one of those patients underwent follow-up evaluations for a minimum of 2 years: 21 received vertical knot (group 1), while 20 received horizontal mattress (group 2). In group 1, an anchor was inserted at the superior glenoid. After relaying the sutures, knotting over the labral tissue was performed. In group 2, two strands were passed through the labrum and fixed into the glenoid with a bioabsorbable knotless anchor. Functional scores were evaluated preoperatively and at the final follow-up assessment. A visual analogue scale (VAS) for pain and range of motion (ROM) were assessed preoperatively, 2 months postoperatively and at the last follow-up visit.
  
  
  RESULTS
  There were no significant differences in functional scores between groups (n.s.). However, external rotation at the side, internal rotation at abduction and total ROM were better in group 2 at the last follow-up visit. At 2 months postoperatively, the VAS for pain and ROM of internal rotation at abduction were better in group 2.
  
  
  CONCLUSIONS
  At the final assessment, there were no significant differences in functional scores between the two groups. However, external rotation at the side, internal rotation at abduction and total ROM were better in group 2.
  
  
  METHODS
  Case-control study, Level III.
authors.affiliation: Department of Orthopedic Surgery, St. Paul's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 137-701, Republic of Korea.
authors.forename: Hyuk Jae
authors.initials: HJ
authors.lastname: Yang
authors.affiliation: Department of Orthopedic Surgery, St. Paul's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 137-701, Republic of Korea.
authors.forename: Kisyck
authors.initials: K
authors.lastname: Yoon
authors.affiliation: Department of Orthopedic Surgery, St. Paul's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 137-701, Republic of Korea.
authors.forename: Hyonki
authors.initials: H
authors.lastname: Jin
authors.affiliation: Department of Orthopedic Surgery, St. Paul's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 137-701, Republic of Korea. hssongmd@yahoo.com.
authors.forename: Hyun Seok
authors.initials: HS
authors.lastname: Song
mesh_terms: D000293:Adolescent; D000328:Adult; D001134:Arm Injuries / Q000601:surgery*; D001182:Arthroscopy / Q000379:methods; D016022:Case-Control Studies; D005260:Female; D051445:Fibrocartilage / Q000293:injuries / Q000601:surgery*; D006801:Humans; D008297:Male; D010147:Pain Measurement; D016059:Range of Motion, Articular; D020127:Recovery of Function; D000070599:Shoulder Injuries; D012785:Shoulder Joint / Q000601:surgery*; D013536:Suture Techniques; D016896:Treatment Outcome
keywords: Arthroscopy; Horizontal mattress; Knotless; SLAP; Superior labrum anterior to posterior