Contact area and pressure in suture bridge rotator cuff repair using knotless lateral anchors

Marc Tompkins, Keith O. Monchik, Matthew J. Plante, Braden C. Fleming, Paul D. Fadale

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Purpose: To evaluate whether the use of knotless lateral anchors in a suture bridge construct produces better contact area and pressure parameters than a suture bridge construct with standard lateral anchors that require knots or a double-row repair. The hypothesis was that knotless lateral anchors would produce better contact area and pressure parameters than the other two constructs. Methods: A total of fifteen matched pairs of cadaveric shoulders were divided into three groups. In Group 1, a suture bridge using knotless anchors for the lateral row was performed on five shoulders. A suture bridge using standard lateral row anchors that require knots was performed on the contralateral shoulders. In Group 2, suture bridge with knotless lateral row anchors was compared with double-row repair. In Group 3, suture bridge using standard lateral row anchors was compared with double-row repair. The contact conditions of the rotator cuff footprint were measured using pressure-sensitive film. Results: There were no statistically significant differences between any of the techniques regarding contact area F(2, 15.7) = 3.09, P = 0.07 or mean contact pressure F(2, 15.1) = 2.35, P = 0.12. A post hoc power analysis suggests differences between techniques are likely less than 91-113 mm 2 for area and 0.071-0.089 N for pressure. Conclusions: The use of knotless anchors in the lateral row of a suture bridge repair did not increase the footprint contact area or contact pressure when compared to a suture bridge repair requiring knots laterally or to a double-row repair.

Original languageEnglish (US)
Pages (from-to)1788-1793
Number of pages6
JournalKnee Surgery, Sports Traumatology, Arthroscopy
Volume19
Issue number10
DOIs
StatePublished - Oct 1 2011

Keywords

  • Contact area
  • Contact pressure
  • Knotless anchor
  • Rotator cuff repair
  • Suture bridge

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