改良Kessler法吻合屈趾肌腱术后早期主动活动的生物力学研究

目的 研究屈指肌腱吻合术后早期主动活动的生物力学特性。方法 30只成年健康红宝鸡为实验动物,3只6趾用于正常鸡足不抗阻力主动屈曲力学测定。27只将双侧趾深屈肌腱横断后用改良KessIer法吻合,术后实验足不用任何固定,对照足予管型石膏固定,术后即刻、3d、7d、14d、21d分别对肌腱进行生物力学性能测试,并进行比较。结果 实验足和对照足在各个时间组的抗断裂力均大于正常鸡足不抗阻力主动屈曲所需的力,实验足在各项生物力学性能测试中均优于对照足。结论 屈指肌腱吻合术后进行早期主动活动是可行的。

Biomechanical analysis of early active motion after flexor tendon repair by modified Kessler suture

Objective To investigate the biomechanical properties of early active motion after flexor tendon repair and provide experimental basis for clinics. Methods 30 adult healthy Red bro chickens were used as laboratory animal; three chickens were tested to evaluate the force of unrisisted active flexion of normal tendon. The rest chickens' flexor digitorum profundus tendonds were repaired with the modified Kessler technique after transection. Tendons of experimental group were not fixed with anything while tendons of control group were fixed with cast. The biomechanical properties of tendons were tested at 0 d, 3 d, 7 d, 14 d, 21 d and were compared. Results The ultimate tensile forces of experimental group and control group were both larger than the force of unrisisted active flexion of normal tendon in any postoperative time. The biomechanical properties of experimental group were better than that of control group. Conclusion Early active motion after flexor tendon repair is applicable.