A Study On Cervical Vertebral Skeletal Maturation Of Children Aged From9to16in Urumqi

Objective:To establish a method of estimating cervical vertebral maturation forUrumqi adolescent and to determine whether the maturation of cervical vertebralcorrelates with maturation indicated by hand-wrist radiographs in Urumqi field, and toprovide valid reference index for assessing skeletal age while making diagnosis andtreatment plan. Methods:1.The samples were selected from lateral cephalometricradiographs of280Urumqi children aged from9to16. The parameters were measured toindicate the morphological changes of the third(C3) and fourth(C4) vertebrae inwidth,height and the depth of the inferior curvature according to Mito′s measurement ofcervical vertebral. The independent-sample t test and stepwise multiple regressionanalysis were used to estimate the growth status and the radios of C3, C4cervicalvertebrae by SPSS13.0software package.2. The samples were derived from lateralcephalometric and hand-wrist radiographs of65subjects (36male,29female; ages,9-16years). The pearson correlation coefficients were estimated separatedly for males andfemales to measure the relationship among cervical vertebral maturatuin measured by theregression and hand-wrist maturation determined by CHN. Results:1.The physical andmorphological contour of C3, C4cervical vertebral skeletal age of children in Urumqiwas expressed by the equation. CVBA=-104.249+5.387AH3/AP3-139.604AH4/AP4+118.571PH4/AP4+135.594AH4/PH4(male) CVBA=-7.172-5.641AH3/AP3+13.005AH3/H3+26.165AH3/PH3-0.62PH4/AP4-9.995AH4/H4(female)2.The pearson correlation coe-fficient revealed highly significant relationships whether males or females betweenhand-wrist bone age and chronological age, hand-wrist bone age and cervical vertebralbone age. Furthermore,the coefficients of correlation between cervical vertebral bone ageand hand-wrist bone age(r=0.789, P＜0.01) are higher than that between chronologicalage and hand-wrist bone age(r=0.747, P＜0.01) in males. However, in females the coefficients of correlation between cervical vertebral bone age and hand-wrist bone age(r=0.836, P＜0.01)are approach to that between chronological age and hand-wrist boneage(r=0.838, P＜0.01).Conclusion: The regression formula resulted from morphologicalmeasurements quantitatively indicates the skeletal maturation of cervical vertebrae ofchildren in Urumqi.