改良环扣式传感器用于兔在体跟腱的生物力学测试

Biomechanics on tendo calcaneas of the rabbits in vivo are measured by modified buckle transducer

目的探讨在体跟腱的生物力学行为。方法对环扣式传感器进行改良;选用45只家兔均分三组,A组(正常左侧跟腱),B组(正常右侧跟腱),C组(失胫神经支配的左侧跟腱),以改良环式传感器对A、B、C三组的跟腱进行生物力学测试。结果家兔跑跳时的张力曲线主要有4种,即I、II、III、IV;失胫神经支配状态下的一侧跟腱的生物力学参数明显低于常态(P<0.05)。结论改良环扣式传感器用于在体跟腱的生物力学测试具有可行、稳定、灵敏等优点。

Objective To investigate biomechanics of Achilles tendon on an in vivo model. Methods 45 rabbits were averagely assigned into 3 groups at random. Group A (normal left Achilles tendon), Group B (normal right Achilles tendon), Group C (non-innervated left Achilles tendon). Their biomechanical variables were measured by modified buckle transducer. Result The tension-time curve can be mainly classified into four types (I, II, III, IV). Biomechanical variables of Achilles tendon under non-innervated condition were much lower than those under normal condition (P<0.05). Conclusion Modified buckle transducer can be used for measuring tension of Achilles tendon in vivo and be characterized as feasible, stable and sensitive.