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

作　　者：Winston Shang Rong Lim Andy Khye Soon Yew Hannah Lie Siaw Meng Chou Denny Tijauw Tjoen Lie 

机构地区：[1]Department of Orthopaedic Surgery,Singapore General Hospital,Singapore 169856,Singapore [2]College of Engineering,Nanyang Technical University,Singapore 797101,Singapore

出　　处：《World Journal of Orthopedics》2023年第5期319-327,共9页世界骨科杂志（英文版）

摘　　要：BACKGROUND Chronic large to massive rotator cuff tears are difficult to treat and re-tears are common even after surgical repair.We propose using a synthetic polypropylene mesh to increase the tensile strength of rotator cuff repairs.We hypothesize that using a polypropylene mesh to bridge the repair of large rotator cuff tears will increase the ultimate failure load of the repair.AIM To investigate the mechanical properties of rotator cuff tears repaired with a polypropylene interposition graft in an ovine ex-vivo model.METHODS A 20 mm length of infraspinatus tendon was resected from fifteen fresh sheep shoulders to simulate a large tear.We used a polypropylene mesh as an interposition graft between the ends of the tendon for repair.In seven specimens,the mesh was secured to remnant tendon by continuous stitching while mattress stitches were used for eight specimens.Five specimens with an intact tendon were tested.The specimens underwent cyclic loading to determine the ultimate failure load and gap formation.RESULTS 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 

分 类 号：R318.01[医药卫生—生物医学工程]