Lim Rebecca Q R, Wong Yoke-Rung, Loke Austin M K, Tay Shian-Chao
1 Department of Hand Surgery, Singapore General Hospital, Singapore.
2 Biomechanics Laboratory, Singapore General Hospital, Singapore.
J Hand Surg Eur Vol. 2018 Jun;43(5):494-498. doi: 10.1177/1753193418758828. Epub 2018 Feb 19.
This study compared the biomechanical performance of a novel 6-strand asymmetric flexor tendon repair with the modified Lim-Tsai technique using cyclic testing. Two groups of ten porcine tendons each were repaired and tested. Gap formation at every 100 cycles was measured. Survival was defined as maximum gap formation below 2 mm. All the repairs survived Stage I. With increased cyclic load in Stage II, the mean gap formation of modified Lim-Tsai repairs exceeded 2 mm at the 600th cycle and reached 4.2 mm (SD 1.93) at the end of Stage II, resulting in 0% survival. The mean gap formation of asymmetric repairs reached 2.0 mm (SD 1.43) at the 800th cycle and was 2.4 mm (SD 1.52) at the end of Stage II, with 60% survival. The asymmetric repair has better biomechanical performance under cyclic testing as compared with the modified Lim-Tsai repair.
本研究采用循环测试比较了一种新型6股不对称屈肌腱修复术与改良Lim-Tsai技术的生物力学性能。每组十条猪肌腱，共两组，分别进行修复和测试。测量每100个循环时的间隙形成情况。将最大间隙形成小于2毫米定义为存活。所有修复在第一阶段均存活。在第二阶段，随着循环负荷增加，改良Lim-Tsai修复术在第600个循环时平均间隙形成超过2毫米，在第二阶段结束时达到4.2毫米（标准差1.93），存活率为0%。不对称修复术在第800个循环时平均间隙形成达到2.0毫米（标准差1.43），在第二阶段结束时为2.4毫米（标准差1.52），存活率为60%。与改良Lim-Tsai修复术相比，不对称修复术在循环测试下具有更好的生物力学性能。
