Biomechanical analysis of a knotless transtendon interimplant mattress repair for partial-thickness articular-sided rotator cuff tears

The American Journal of Sports Medicine
Maxwell C ParkThay Q Lee

Abstract

A transtendon interimplant mattress repair along the medial row for partial-thickness rotator cuff repairs has been described with clinical success. However, the biomechanical characteristics for such a repair have not been elucidated. A knotless interimplant mattress repair may show improved or equivalent load and strain characteristics, compared with a repair using isolated mattress repairs over each of 2 anchors. Controlled laboratory study. Seven matched pairs of human cadaveric shoulders were dissected. Articular-sided tears were created involving 50% of the supraspinatus footprint. In 7 shoulders, repairs were performed with mattress configurations isolated over each of 2 anchor sites (control group). In 7 contralateral shoulders, a knotless interimplant mattress suture configuration was employed creating bridging sutures between implants. For all specimens, a materials-testing machine was used to cyclically load each repair from 10 to 180 N for 30 cycles; each repair was then loaded to failure. A deformation rate of 1 mm per second was employed for all tests. A video-digitizing system was employed to quantitatively measure the gap formation and strain on the footprint area of the repair. For detecting gap formation, 7 ma...Continue Reading

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Citations

Apr 13, 2013·International Orthopaedics·Francesco FranceschiVincenzo Denaro
Nov 11, 2010·Archives of Orthopaedic and Trauma Surgery·Umile Giuseppe LongoVincenzo Denaro
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Jul 15, 2015·Advances in Orthopedics·Graeme MatthewsonGail M Thornton
Oct 11, 2016·Journal of Shoulder and Elbow Surgery·Nicholas A EarlyWilliam J Ciccone

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