Suture spanning augmentation of single-row rotator cuff repair: a biomechanical analysis

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• 作者：Nicholas A. Early ; MD^a ; John J. Elias ; PhD^b ; ^{john.elias@akrongeneral.org} ; Steven B. Lippitt ; MD^a ; Danielle E. Filipkowski ; MS^b ; Robert A. Pedowitz ; MD ; PhD^c ; William J. Ciccone II ; MD^d
• 关键词：Basic Science Study ; Biomechanics
• 刊名：Journal of Shoulder and Elbow Surgery
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：26
• 期：2
• 页码：337-342
• 全文大小：655 K
• 卷排序：26

文摘

This in vitro study evaluated the biomechanical benefit of adding spanning sutures to single-row rotator cuff repair.MethodsMechanical testing was performed to evaluate 9 pairs of cadaveric shoulders with complete rotator cuff repairs, with a single-row technique used on one side and the suture spanning technique on the other. The spanning technique included sutures from 2 lateral anchors securing tendon near the musculotendinous junction, spanning the same anchor placement from single-row repair. The supraspinatus muscle was loaded to 100 N at 0.25 Hz for 100 cycles, followed by a ramp to failure. Markers and a video tracking system measured anterior and posterior gap formation across the repair at 25-cycle intervals. The force at which the stiffness decreased by 50% and 75% was determined. Data were compared using paired t-tests.ResultsOne single-row repair failed at <25 cycles. Both anterior and posterior gap distances tended to be 1 to 2 mm larger for the single-row repairs than for the suture spanning technique. The difference was statistically significant at all cycles for the posterior gap formation (P ≤ .02). The trends were not significant for the anterior gap (P ≥ .13). The loads at which the stiffness decreased by 50% and 75% did not differ significantly between the 2 types of repair (P ≥ .10).ConclusionsThe suture spanning technique primarily improved posterior gap formation. Decreased posterior gap formation could reduce failure rates for rotator cuff repair.