ABSTRACT
OBJECTIVE@#To establish a CT staging method of sternal end of clavicle epiphyseal growth for teenagers by thin layer CT scan, multiplanar reconstruction (MPR) and volume reconstruction (VR) technologies.@*METHODS@#The CT imaging characteristics, which collected from 460 teenagers (aged from 15 to 25) in East and South China, were studied through both sternal ends of clavicles' imagings by thin layer coronal CT scan and axial CT scan, MPR and VR technologies. The parameters of sternal end of clavicle including the longest diameter of epiphysis, the longest diameter of metaphysis, their length ratio, area of epiphysis, area of metaphysis, and their area ratio were measured and calculated in order to establish new classification.@*RESULTS@#Based on the staging method of Schmeling, integrating the CT imaging reconstruction information of sternal end of clavicle, the new classification of sternal end of clavicle epiphyseal growth were divided into 1 to 5 stages, and stage 2 and stage 3, respectively, contained a, b and c sub-classification.@*CONCLUSION@#This new classification has merits of large sample size, wide age range and easy operability. By using CT imaging reconstruction techniques and analyzing the data which closely related to sternal end of clavicle epiphyseal growth of teenagers, the feasibility of the staging method could be increased.
Subject(s)
Adolescent , Adult , Female , Humans , Male , Young Adult , Age Determination by Skeleton/methods , China , Clavicle/growth & development , Epiphyses/growth & development , Feasibility Studies , Forensic Anthropology , Image Processing, Computer-Assisted , Osteogenesis , Sex Characteristics , Sternum/growth & development , Tomography, X-Ray ComputedABSTRACT
It is practical value for determination the teenagers whether the age is full of the legal responsibility age of 18 years old or not by estimating skeletal age of sternal end of clavicle. The traditional methods mainly based on X-ray radiography. However, sternal end of clavicle and adjacent lung, bronchus, sternum, rib, transverse process of thoracic vertebra are overlapped each other. As a result of overlapping, there will be obtained false negative or positive film reading results when according to X-ray observation of epiphyseal growth of sternal end of clavicle, which directly affect the scientificalness and accuracy of estimating of skeletal age. In recent years, the scholars at home and abroad have started to use thin layer CT scan technology to estimate skeletal age of the sternal end of clavicle. With the 2D and 3D CT recombination technology, the accuracy of the film reading distinctly improves by making the shape, size and position of epiphysis displayed clearly. This article reviews the application and research progress of thin layer CT scanning technology in estimating skeletal age of sternal end of clavicle at home and abroad, analyzes the superiority and value of thin layer CT scan technology, which applied to skeletal age of sternal end of clavicle.
Subject(s)
Adolescent , Female , Humans , Male , Young Adult , Age Determination by Skeleton/methods , Clavicle/growth & development , Epiphyses/growth & development , Forensic Anthropology/methods , Image Processing, Computer-Assisted , Osteogenesis , Retrospective Studies , Sternum/growth & development , Tomography, X-Ray Computed/methodsABSTRACT
As deformidades da parede torácica anterior ou deformidades pectus em crianças e adolescentes têm sido tratadas por especialistas que nao estao acostumados a lidar com a fisiologia do crescimento ósseo e cartilagens, e que leva a equívocos e resultados questionáveis. Estudos sobre a etiologia, patogeina e os resultados obtidos com um tratamento ortótico sao descritos pelo autor, emnfatizando que as deformidades pectus dizem respeito à ortopedia.