title: Restoring the labral height for treatment of Bankart lesions: a comparison of suture anchor constructs.
abstract: OBJECTIVE
  The purpose of this study was to evaluate glenoid labral heights before injury and after repair with 2 suture anchors: (1) traditional suture anchor secured with knots and (2) knotless suture anchor.
  
  
  METHODS
  Ten matched pairs of human cadaveric glenoids were examined. In each specimen the labrum was detached from the 3-o'clock position to the 6:30 clock position on the anteroinferior glenoid, and labral repair was performed with either (1) traditional Bio-SutureTak suture anchors (n = 10) (Arthrex, Naples, FL) or (2) knotless PushLock suture anchors (n = 10, contralateral side) (Arthrex). By use of a 3-dimensional digitizer, the labral height, measured from the deepest point of the glenoid articular surface to the highest tip of the labrum, was measured in all specimens before injury and after repair at the 3:30, 4:30, and 5:30 clock positions. The degree of labral height increase was computed as a percent increase in labral height from before injury to after repair.
  
  
  RESULTS
  Labral height increased significantly for all specimens from before injury (5.35 mm) to after repair (8.05 mm) (159.1% +/- 13.7%, P < .0001). Increases in labral height from before injury to after repair were similar (P > .05) for Bio-SutureTak suture anchors (164.6% +/- 18.7%, P < .0001) and PushLock suture anchors (153.6% +/- 5.8%, P < .0001). The amount of labral height increase did not vary by anatomic location (157.0% +/- 50.2%, 168.9% +/- 51.0%, and 150.4% +/- 35.2% at 3:30, 4:30, and 5:30, respectively; P = .46).
  
  
  CONCLUSIONS
  An increase in labral height can be achieved to create a significant height increase from before injury to after labral repair. The difference in labral height afforded by a traditional suture anchor and a knotless anchor is not statistically significant.
  
  
  CONCLUSIONS
  Both traditional and knotless suture anchor constructs provide a reliable restoration of labral height in an acute Bankart model.
authors.affiliation: Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, USA.
authors.forename: Mark A
authors.initials: MA
authors.lastname: Slabaugh
authors.forename: Nicole A
authors.initials: NA
authors.lastname: Friel
authors.forename: Vincent M
authors.initials: VM
authors.lastname: Wang
authors.forename: Brian J
authors.initials: BJ
authors.lastname: Cole
mesh_terms: D000208:Acute Disease; D001182:Arthroscopy / Q000379:methods; D002102:Cadaver; D004867:Equipment Design; D005260:Female; D006801:Humans; D007593:Joint Instability / Q000473:pathology / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D012785:Shoulder Joint / Q000473:pathology* / Q000601:surgery; D053441:Suture Anchors; D013536:Suture Techniques / Q000295:instrumentation*; D016896:Treatment Outcome