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Knee Surg Sports Traumatol Arthrosc. 2011 Oct;19(10):1788-93. doi: 10.1007/s00167-011-1478-0. Epub 2011 Apr 6.

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

Author information

1
Department of Orthopaedics, Alpert Brown Medical School, Rhode Island Hospital, Providence, RI 02903, USA. tompkinsm@hotmail.com

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.

PMID:
21468618
DOI:
10.1007/s00167-011-1478-0
[Indexed for MEDLINE]

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