An Evaluation Of The Correlation Between Stressd Coronal X-Ray Imaging And The Traditional Anteroposterior Or Lateroposterior

Objective:Choose the flexibility of flat feet in children as a research obj ect,the measurement of the posterior foot coronal stress X-ray was compared with the measurement of the traditional lateral radiograph,to study its relevanc e and to check its clinical value.Method:According to the standard collection of 67 cases of flat feet(a t otal of 134 feet)in children,and raise the same age group,similar to the exp erimental group of 21 children(a total of 42 feet)normal children,children a nd normal children with foot X-ray examination,using the posterior position o f the posterior foot coronal slice,and standing position lateral slices,the ratio of the longitudinal diameter to the transverse diameter of the calcaneal comple x,the outward rate of the calcaneus,the lateral position of the lateral flap,the angle of Merry,the medial longitudinal arch angle,the angle of the lateral ar ch of the foot,Statistical analysis of the posterior coronal stress level X-ray measurement data and the traditional stress level lateral radiographs were com pared with the correlation,reliability and validity of the test.Results:To compare the ratio of the posterior distance and the ratio of t he longitudinal diameter to the transverse diameter of the calcaneal complex,a nd the outward displacement of the calcaneus(Index,including the lateral dista nee,Merry angle,medial medial longitudinal arch angle,and foot lateral arch angle)were measured.Normal foot group distance from the angle of 10.28±2.61;the ratio of the longitudinal diameter to the transverse diameter of the calc aneal complex was 1.17±0.04;the outward displacement of the calcaneus was 2.29±0.47;the lateral distance was 33.57±10.52;merry angle of 1.41±0.87;foot medial longitudinal arch angle ofl 21.24±4.69;foot lateral arch angle ofl 39.67±5.76.The ratio of the longitudinal diameter to the transverse diameter of 17.6±1.28;the calcaneal complex was 1.04±0.03;the outward displacement of the calcaneus was 4.99±0.47;the lateral distance was40.82±5.68;the Mer ry angle was 15.85±6.18;foot medial longitudinal arch angle of 145.27±6.88;foot lateral arch angle of 166.88 ± 7.25,there was a significant difference bet ween the two groups.Pearson correlation coefficient analysis between the two groups of seven indicators,there was a significant correlation between the abo ve seven indexes in all flattened pediatric groups at a significant level of a=0.01.Compared with the normal foot group,the posterior margin of the coron al slice of the flat foot group increased with the angle of the heel and the cal caneus.Lateral position of the lateral position with the angle,Merry angle,me dial medial longitudinal arch angle,foot lateral arch angle also increased,both are positively correlated.Wherein the ratio of the longitudinal diameter to the transverse diameter of the coronal site of the calcaneus complex decreases,wi th the posterior margin of the coronal and calcaneus,and the lateral position o f the lateral flap,the Merry angle,the medial medial longitudinal arch angle,and the foot lateral arch angle were negatively correlated.2.Three indicators of foot coronal position and four indexes of foot and lateral position were analyzed by descriptive statistical analysis of different se verity(mild group,moderate group and severe group),the results showed that the mean change of the ratio of the longitudinal diameter to the transverse dia meter of the coronal site of the calcaneus decreased with the severity increasin g.Coronal posterior distance and calcaneus migration rate,and the lateral dista nee of the lateral flap of the lateral flap,the angle of the Merry angle,the m edial medial longitudinal arch angle and the angle of the lateral longitudinal ar ch of the foot are increasing with the severity increasing.3.Different degrees of disease under the ROC curve area of the test,distance from the angle,the ratio of the vertical and transverse diameter of the calcaneal complex,the rate of calcaneus removal,the lateral distance,the angle of Merry,the medial longitudinal arch angle,P value is 0,statistically significant,indicating that the above seven indicators of the different severity of the diagnosis of children in the flat group meaningful.The larger the area under the curve,indicating that the greater the diagnostic effectiveness of the test.the ratio of the longitudinal diameter to the transverse diameter of the calcaneal complex>the outward displacement of the calcaneus>Normal foot group distance from the angle.merry angle>foot lateral arch angle>the lateral distance>foot medial longitudinal arch angle.Conclusion:1.In the diagnosis of flat foot pediatric,the use of coronal posterior foot stress X-ray film and the traditional lateral imaging method to evaluate the dia gnosis is consistent.Stress posterior foot coronal slice can respond to flat foot posterior foot coronal changes,has clinical application value.2.The diagnostic ratio of the ratio of the longitudinal diameter to the transverse diameter of the posterior foot and calcaneus complex is better than the measurement of the Merry angle of the foot lateral.