title: Effect of cyclic loading on new polyblend suture coupled with different anchors.
abstract: BACKGROUND
  Secure tendon-to-bone fixation is essential for successful rotator cuff repair. Biomechanical properties of devices used in rotator cuff repair should be better understood.
  
  
  OBJECTIVE
  To evaluate the response to incremental cyclic loading of 6 different anchor-suture complexes commonly used in rotator cuff repair.
  
  
  METHODS
  Controlled laboratory study.
  
  
  METHODS
  Two absorbable anchors 5 mm and 6.5 mm in diameter and 1 metallic anchor, coupled with Ethibond or FiberWire, were tested on 5 pairs of fresh-frozen human cadaveric shoulders. An incremental cyclic load was applied until failure using a Zwich-Roell Z010 electromechanical testing machine. The ultimate failure load and mode of failure were recorded. An analysis of variance model was used for statistical analysis.
  
  
  RESULTS
  The FiberWire suture coupled with both absorbable and metallic anchors provided statistically significantly stronger fixation. However, although the metallic anchors in most cases failed because of slippage of the anchor, absorbable anchors failed because of rupture of the eyelet.
  
  
  CONCLUSIONS
  The FiberWire seems to increase the strength of fixation devices under cyclic load using both absorbable and metallic anchors, with relevant differences in failure mode (slippage of the metallic anchor and eyelet failure in the absorbable anchor).
  
  
  CONCLUSIONS
  Use of the FiberWire suture might change the mode of failure of the suture-anchor complexes.
authors.affiliation: St. Andrea Hospital, University La Sapienza, Rome, Italy.
authors.forename: Angelo
authors.initials: A
authors.lastname: De Carli
authors.forename: Antonio
authors.initials: A
authors.lastname: Vadalà
authors.forename: Edoardo
authors.initials: E
authors.lastname: Monaco
authors.forename: Luca
authors.initials: L
authors.lastname: Labianca
authors.forename: Edoardo
authors.initials: E
authors.lastname: Zanzotto
authors.forename: Andrea
authors.initials: A
authors.lastname: Ferretti
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001696:Biomechanical Phenomena; D019544:Equipment Failure Analysis; D006801:Humans; D008422:Materials Testing; D017006:Rotator Cuff / Q000601:surgery; D000070636:Rotator Cuff Injuries; D013537:Sutures