Studies on Problems of the Return Home Pro-slide Calcaneal Tractor Interface Shear Stresses

Objective To explore the interface shear stresses and interface friction force volume of the return home pro-slid calcaneal tractor (PCT)was observed between calcaneal bone,provide theoretical basis for reasonable clinical choice. Methods 16 fresh human cadaveric calcaneal were obtained and using experimental stress analysis method,to compare the interface shear stresses and interface friction force volume difference between PCT and the traditional calcaneal tractor (TCT)was performed. Results ①A group interface shear stresses volume was (2.17±0.16)N/mm2,bigger than B group was(1.29±0.11)N/mm2,statistically significant difference was observed between (P0.05). ②A group interface friction force volume was(343.13±16.20)N,statistically significant difference was observed between(P0.05). Conclusion Using return home PCT not only were advantage biomechanical characteristics,but also on operation simple and safety dependence in clinic application with it would be better to choose,special be suitable for the old man patients with serious osteoprosis.