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Ossification of the Triradiate Cartilage and Posterior Acetabulum

대한영상의학회지 2019년 80권 3호 p.503 ~ 512
 ( Kim Soo-Hyun ) - Kangwon National University Hospital Department of Radiology

 ( Yoon Hye-Kyung ) - Kangwon National University Hospital Department of Radiology
 ( Han Heon ) - Kangwon National University Hospital Department of Radiology
 ( Cho Seong-Whi ) - Kangwon National University Hospital Department of Radiology
 ( Seo Yoo-Kyeong ) - Kangwon National University Hospital Department of Radiology

Abstract


Purpose: This study attempts to evaluate the skeletal maturation patterns of the triradiate cartilage (TRC) and the posterior acetabular wall (PA), which can be easily assessed on body computerized tomography (CT). It also examines the effect of gender and age on ossification of both TRC and PA.

Materials and Methods: This retrospective study included a total of 1324 CT scans for children between the ages of 6 and 16 years. Depending on the extent of ossification in each right or left aspect, determined by the consensus of two observers, the TRC and PA scans were categorized into Grades 4 and 3, respectively.

Results: The TRC for boys began to ossify at age 10 and closed completely at 14, while the PA for boys started ossification at age 11 and entirely fused at 13. The ages of ossification center appearance and complete fusion in both TRC and PA for girls were exactly two years earlier than boys. The TRC fused within one year after the closure of the PA.

Conclusion: The appearance and closure of the TRC and PA ossification centers show predictable patterns of development, appearance and merger earlier in females than in males. The suggestion is that development and morphogenesis of both TRC and PA ossification centers can be adequately assessed by using 3-dimensional body CT.

키워드

Children; Computed Tomography, X-ray; Cartilage; Acetabulum; Ossification
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