title: Biomechanical comparison of screw-in suture anchor-suture combinations used for Bankart repair.
abstract: BACKGROUND
  Bankart repair laxity may contribute to pathologic joint instability. This biomechanical study compared two screw-in suture anchor-suture combinations under tensile loads.
  
  
  METHODS
  Twelve pairs of scapulae were implanted with either a 3 mm diameter, 14 mm long poly-L/D-lactide suture anchor with a suture eyelet (Group 1) or a 3.1 mm diameter, 11 mm long polylactide suture anchor with a molded eyelet (Group 2). Constructs were cyclically loaded between 25 and 50 N with a 25 N load increase every 25 cycles.
  
  
  RESULTS
  Group 2 displayed greater displacement at failure, had more specimens with > or =2 mm displacement by the 50 N interval (P = 0.014), and had displaced more by 100 N (P < or = 0.046). Group 1 displayed a stronger load-displacement at failure relationship than Group 2 (r (2) = 0.67 vs. r (2) = 0.37).
  
  
  CONCLUSIONS
  Construct differences may influence decisions regarding the required number of suture anchor-suture loops, the rehabilitation timetable, and the timing of return to unrestricted activities.
authors: Division of Sports Medicine, Department of Orthopaedic Surgery, University of Louisville, 210 East Gray Street, Louisville, KY 40202, USA.
authors: Brad S
authors: BS
authors: Sparks
authors: John
authors: J
authors: Nyland
authors: Akbar
authors: A
authors: Nawab
authors: Ethan
authors: E
authors: Blackburn
authors: Ryan
authors: R
authors: Krupp
authors: David N M
authors: DN
authors: Caborn
mesh_terms: D020341:Absorbable Implants; D000368:Aged; D001182:Arthroscopy; D001696:Biomechanical Phenomena; D002102:Cadaver; D004868:Equipment Failure; D005260:Female; D006801:Humans; D008297:Male; D012540:Scapula / Q000601:surgery*; D012785:Shoulder Joint / Q000601:surgery*; D013536:Suture Techniques; D013537:Sutures