Bezuti Márcio Takey, Mandarano-Filho Luiz Garcia, Barbieri Giuliano, Mazzer Nilton, Barbieri Cláudio Henrique
Universidade de São Paulo, Faculdade de Medicina de Ribeirão Preto, Ribeirão Preto, SP, Brazil, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
Acta Ortop Bras. 2014;22(5):269-74. doi: 10.1590/1413-78522014220500733.
To analyze the influence of steel plates for osteosynthesis on the velocity of ultrasound propagation (VU) through the bone.
The transverse coronal and sagittal velocity of ultrasound propagation underwater were measured on the intact bone and then on assemblies of the same bone with two types of osteosynthesis plates (DCP and semi tubular), fixed onto the dorsal side of the bones. The first arriving signal (FAS) was the ultrasound parameter used, taking the coronal and sagittal diameters as the distances to calculate velocity. Intergroup statistical comparisons were made at significance level of 1% (p<0.01).
Velocity was higher on the intact bones than on the bone-plate assemblies and higher for the semitubular than for the compression plates, although differences were not statistically significant for most comparisons (p=0.0132 to 0.9884), indicating that the steel plates do not interfere significantly with ultrasound wave propagation through the bone-plate assemblies.
The velocity reduction effect was attributed to the greater reflection coefficient of the steel as compared to that of bone and water. Ultrasonometry can, thus, be used in the evaluation of healing of fractures fixed with steel plates. Experimental Study.
分析用于骨接合的钢板对超声在骨中传播速度（VU）的影响。
在完整骨上，然后在将两种类型的骨接合钢板（动力加压钢板和半管状钢板）固定于骨背侧的同一骨组件上，测量超声在水下传播的横向冠状面和矢状面速度。所使用的超声参数为首个到达信号（FAS），以冠状面和矢状面直径作为距离来计算速度。组间统计比较在1%的显著性水平（p<0.01）下进行。
完整骨上的速度高于骨 - 钢板组件上的速度，半管状钢板的速度高于加压钢板的速度，尽管大多数比较差异无统计学意义（p = 0.0132至0.9884），这表明钢板对超声在骨 - 钢板组件中的传播无显著干扰。
速度降低效应归因于钢板与骨和水相比具有更大的反射系数。因此，超声测量法可用于评估用钢板固定的骨折愈合情况。实验研究。
