| Autor: |
Jaramillo D; Department of Radiology, Children's Hospital, Boston, MA., Shapiro F, Hoffer FA, Winalski CS, Koskinen MF, Frasso R, Johnson A |
| Jazyk: |
angličtina |
| Zdroj: |
Radiology [Radiology] 1990 Jun; Vol. 175 (3), pp. 767-73. |
| DOI: |
10.1148/radiology.175.3.2343128 |
| Abstrakt: |
The formation of a bony bridge across the growth plate was studied with magnetic resonance (MR) imaging, tomography, and histologic examination in 12 rabbits. Histologic studies performed 0-8 weeks after the creation of a defect in the physis demonstrated transphyseal bone formation with no evidence of cartilage repair. Gadolinium enhancement indicated the development of vascularity through the plate, which preceded the formation of a bony bridge. Enhancement was faint at 4 days after surgery, was inhomogeneous at 1 week, was maximal at 2 weeks, and decreased at 3 weeks and beyond as the lesion was replaced by bone. A dark rim representing bone deposition at the periphery of the lesion was seen at 2 weeks. At 4 weeks and beyond, the bridge was seen as a dark band of dense bone or as a wider area that was isointense with adjacent fatty marrow. Abnormality in the cartilage and development of transphyseal vascularity, which precede the formation of a bony bridge after trauma, can be detected with MR imaging. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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