Jaramillo D, Laor T, Zaleske D J
Department of Radiology, Children's Hospital, Boston, MA.
Radiology. 1993 Apr;187(1):171-8. doi: 10.1148/radiology.187.1.8451408.
Abnormalities of the growth plate secondary to epiphyseal and metaphyseal injury were studied with magnetic resonance (MR) imaging, radiography, and histologic examination in 20 rabbits. Epiphyseal injury resulted in either the formation of a bony bridge across the growth plate or focal curving of the growth plate caused by a decrease in longitudinal growth. Metaphyseal injury resulted in interference with endochondral ossification, thickening of the growth plate, and extension of cartilage into the metaphysis. Serial MR images obtained during the first 6 weeks after injury showed persistence of abnormalities of the growth cartilage after epiphyseal injury, but resolution of abnormalities after metaphyseal injury. Abnormalities of the cartilage were best seen on T2-weighted images. Gadolinium enhancement showed reconstitution of metaphyseal vascularity after metaphyseal injury but did not enable detection of transphyseal vascularity after epiphyseal injury until a bony bridge formed.
采用磁共振成像（MR）、X线摄影及组织学检查，对20只兔骨骺和干骺端损伤继发的生长板异常进行了研究。骨骺损伤导致生长板上形成骨桥，或因纵向生长减少导致生长板局部弯曲。干骺端损伤导致软骨内成骨受到干扰、生长板增厚以及软骨延伸至干骺端。损伤后最初6周内获得的系列MR图像显示，骨骺损伤后生长软骨异常持续存在，但干骺端损伤后异常消失。软骨异常在T2加权图像上显示最佳。钆增强显示干骺端损伤后干骺端血管重建，但在骨桥形成之前，钆增强无法检测到骨骺损伤后的穿骺血管。
