Objective- The aim of this study was to determine the age of physical maturity and evaluation of radiology and histology of hind limb ossification centers in pigeon. Design- Fundamental study. Animals- 14 pigeons. Procedures- These pigeons were cultivated in identical and standard conditions and radiological and histological tests performed every 7 days to 91 days. Resu...

ABSTRACT As shown in radiographs of 3,764 children of European ancestry under 11 years of age, there are 55 dichotomous (present-absent/absent-present) ossification sequences for nine wrist region centers i n boys and 48 such sequences for girls, with statistically significant sexual dimorphism in more than half of the “alternative” sequences. Substantial samples of Meso-American origin (“Chica...

PURPOSE To evaluate the development of the sphenooccipital sychondrosis as seen on high-resolution thin-section CT scans. METHODS We retrospectively reviewed the records of 253 patients, ages 1 to 77 years old, who had had thin-section CT examination of the skull base. RESULTS An ossification center appeared midline in the patients who were 8 to 13 years old. Six of 12 girls showed addition...

introduction: sodium valproate is an anti convulsant drug which has been used to treat epileptic patients for last decades. even a pregnant patient has to use this drug for the treatment of epileptic seizure. the purpose of this investigation is to study the effect of this medicine on the embryo in the mouse. materials and methods: eight pregnant mice were given 200 mg/kg (i.p.) of sodium valpr...

In many congenital malformation syndromes the pattern of hand-wrist development does not fit the sequence pictured in the Greulich-Pyle atlas. Not infrequently, there is a difference in maturation level of carpal and phalangeal centers in excess of that found in clinically normal children. Usually, the carpal centers are less developed than the phalangeal centers, whereas overall skeletal matur...

The magnitude of economic impact on postnatal ossification timing in generally lower-income boys and girls of European ancestry was found to be 0.21 standard deviation units or Zscores for a difference of approximately $2200.00 in per-capita income. Both boys and girls were equally affected. While it is axiomatic that the children of the poor are developmentally delayed in comparison with boys ...

Computed tomographic (GE 9800) images of 129 patients (from newborn to 18 years old) with no evidence of cervical spine pathology were reviewed retrospectively from available material to evaluate normal anatomic appearances in childhood. The synchondroses may appear solid at soft-tissue window settings, while, with appropriate bone-window settings, a lucent line will be seen. Residual lucency a...