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Rotator cuff repair with an interposition polypropylene mesh:A biomechanical ovine study

World Journal of Orthopedics 2023年第5期14卷 319-327页

作者： Winston Shang Rong Lim Andy Khye Soon Yew Hannah Lie Siaw Meng Chou Denny Tijauw Tjoen Lie Department of Orthopaedic Surgery Singapore General HospitalSingapore 169856Singapore College of Engineering Nanyang Technical UniversitySingapore 797101Singapore

BACKGROUND Chronic large to massive rotator cuff tears are difficult to treat and re-tears are common even after surgical *** propose using a synthetic polypropylene mesh to increase the tensile strength of rotator cuff *** hypothesize that using a polypropylene mesh to bridge the repair of large rotator cuff tears will increase the ultimate failure load of the *** To investigate the mechanical properties of rotator cuff tears repaired with a polypropylene interposition graft in an ovine ex-vivo *** A 20 mm length of infraspinatus tendon was resected from fifteen fresh sheep shoulders to simulate a large *** used a polypropylene mesh as an interposition graft between the ends of the tendon for *** seven specimens,the mesh was secured to remnant tendon by continuous stitching while mattress stitches were used for eight *** specimens with an intact tendon were *** specimens underwent cyclic loading to determine the ultimate failure load and gap *** The mean gap formation after 3000 cycles was 1.67 mm in the continuous group,and 4.16 mm in the mattress group(P=0.001).The mean ultimate failure load was significantly higher at 549.2 N in the continuous group,426.4 N in the mattress group and 370 N in the intact group(P=0.003).CONCLUSION The use of a polypropylene mesh is biomechanically suitable as an interposition graft for large irreparable rotator cuff tears.

关键词： Rotator cuff repair Massive tear interposition graft Biomechanics Polypropylene mesh

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