Small Splint For The Treatment Of Distal Radius Fractures Of Cloth Binding Paper Pressure Pad And The Thickness Of The Biomechanical Study

Objective:(1) in a simulated human body health the forearm on the model of traditional measuring small splint strands of binding the sum of the value.(2) in healthy volunteers forearm, with elastic belt to replace cloth belt, in the case of fixed total binding values, explore the distal radius splint pressure changes with the increase of thickness of paper pressure pad;(3) for the small splint for the treatment of distal radius fracture biomechanical study provides a reference method.Methods:1、Small plywood fixed belt binding method of study:(1)The model of the hydraulic capsules "bag" mimic muscle tone is placed inside a pressure sensor, measuring pressure by two Chinese academy of sciences wangjing hospital of traditional Chinese medicine experts in accordance with the clinical experience of strapping small splint, use of cloth for7times of this model the banding. Measure each expert7t imes strapping model resting state under internal pressure.(2) In seven pressure measurement results, get rid of the maximum and minimum value for the rest of the five times the pressure measuring results are the mean and variance analysis, calculate the model within the standard values of hydraulic, used as the test standard of small splint strapping model.(3)Use all five elastic belt instead of the tape as a splint external fixation with way, the model of strapping, hydraulic pressure to achieve the same as the cloth is fixed in the model standard, measure the sum of all five elastic belt binding, which is the small splint fixation with the sum of the binding standards.2, Pressure pad thickness of paper research methods: In the treatment of the redwood fractures of distal small splint dorsal plate put a pressure sensor, contact with the skin using elastic fixed with small plywood in healthy volunteers forearm. Make the elastic binding for belt size and other factors remain unchanged, by changing the pressure pad of paper thickness, the measurement of small splint distal paper pad under the pressure of change.Results:(1) Two experts according to the standard of cl inical strapping small spl int model after lashing internal hydraulic pressure of the standard value of208.5+/-19.5g (20.85+/-1.95Kpa). Consistency is better, the numerical stability.5root value is the sum of the elastic belt tension is2610+118g.(2) When the pressure pad thickness is5mm, the pressure pad under the pressure of1.45kg, when the pressure pad thickness is5.5mm,105.5%of the initial pressure, the pressure pad thickness is6mm, the pressure increases by107.6%, the pressure pad thickness is6.5mm, the pressure increases by111.7%, the pressure pad thickness is7mm, pressure increases by114.4%, the pressure pad thickness is7.5mm, the pressure increases by118.6%, the thickness of the pressure pad is8mm, pressure increases by120.7%, the pressure pad thickness is8.5mm, the pressure increases by122.8%when the pressure pad thickness is9mm, pressure increases by124.8%, the pressure pad thickness is9.5mm, the pressure increases by125.5%, the pressure pad thickness is10mm, pressure increase by123.4%.Conclusion:(1) experts binding model of internal hydraulic standard is20.85+/-1.95Kpa. In plywood cloth binding amount of upper income summation model should be2610+118g.(2) with the increase of pressure pad of paper thickness, pressure increase gradually, under the pressure pad when pressure pad thickness increases to9.5mm, the pressure pad under growing pressure to the largest.(3) therefore recommend paper pressure pad thickness is7.5mm thickness is relatively appropriate pressure pad of paper thickness.