Figure 19a. Costal groove. (a) Photograph of a right rib shows the normal anatomy of the costal groove (arrows). (b) Radiograph of the same rib shows a thin, sharp hairline caused by the cortex of the costal groove (arrows).
Figure 19a. Costal groove. (a) Photograph of a right rib shows the normal anatomy of the costal groove (arrows). (b) Radiograph of the same rib shows a thin, sharp hairline caused by the cortex of the costal groove (arrows).