Biomechanical Performance of Medial Row Suture Placement Relative to the Musculotendinous Junction in Transosseous Equivalent Suture Bridge Double-Row Rotator Cuff Repair

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• 作者：Mandeep S. Virk ; M.D.^a ; Benjamin Bruce ; M.D.^b ; Kristen E. Hussey ; M.S.^b ; Jacqueline M. Thomas ; M.S.^b ; Tyler A. Luthringer ; B.A.^b ; Elizabeth F. Shewman ; M.S.^b ; Vincent M. Wang ; Ph.D.^b ; Nikhil N. Verma ; M.D.^b ; Anthony A. Romeo ; M.D.^b ; Brian J. Cole ; M.D. ; M.B.A.^b ; ^{Brian.Cole@rushortho.com}
• 刊名：Arthroscopy: The Journal of Arthroscopic & Related Surgery
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：33
• 期：2
• 页码：242-250
• 全文大小：909 K
• 卷排序：33

文摘

To compare the biomechanical performance of medial row suture placement relative to the musculotendinous junction (MTJ) in a cadaveric transosseous equivalent suture bridge (TOE-SB) double-row (DR) rotator cuff repair (RCR) model.MethodsA TOE-SB DR technique was used to reattach experimentally created supraspinatus tendon tears in 9 pairs of human cadaveric shoulders. The medial row sutures were passed either near the MTJ (MTJ group) or 10 mm lateral to the MTJ (rotator cuff tendon [RCT] group). After the supraspinatus repair, the specimens underwent cyclic loading and load to failure tests. The localized displacement of the markers affixed to the tendon surface was measured with an optical tracking system.ResultsThe MTJ group showed a significantly higher (P = .03) medial row failure (5/9; 3 during cyclic testing and 2 during load to failure testing) compared with the RCT group (0/9). The mean number of cycles completed during cyclic testing was lower in the MTJ group (77) compared with the RCT group (100; P = .07) because 3 specimens failed in the MTJ group during cyclic loading. There were no significant differences between the 2 study groups with respect to biomechanical properties during the load to failure testing.ConclusionsIn a cadaveric TOE-SB DR RCR model, medial row sutures through the MTJ results in a significantly higher rate of medial row failure.Clinical RelevanceIn rotator cuff tears with tendon tissue loss, passage of medial row sutures through the MTJ should be avoided in a TOE-SB RCR technique because of the risk of medial row failure.