Aside from simple and compound fractures, which are essentially bone wounds, there may be seen hemorrhages beneath the periosteum or in the immediate vicinity of bones, which are usually small in amount, yet may cause considerable disturbance. The traumatic hematoma of the scalp which often follows delivery is an illustration of an injury of this class, the periosteum itself being sometimes separated. Collections of blood under these circumstances which fail to disappear by absorption may be incised and the contained clot turned out.
PLATE XII
FIG. 1
Young Granulation Tissue Following Bur., a, aa, thin-walled capillaries. Large nuclei, fibroblasts horseshoe nuclei, leukocytes. × 250.
FIG. 2
Young Scar. Numerous capillaries perpendicular to surface. Spindle elements, fibroblasts considerably smaller than in Fig. 1. × 250.
FIG. 3
