frontal, parietal, occipital, temporal, sphenoid, ethmoid, auditory ossicles.
nasal, palatine, maxillary, zygomatic, lacrimal, nasal conchae, vomer, mandible
inflammatory, reparative, remodeling
1/6, hemorrhage, clot formation within hours-2 days
2/6 begins within 48 hours, enlarged inflammatory cells appear, osteocytes reabsorb blood, phagocytes appear
4/6 1 to several months. callus grows and bridges the fracture site; cartilage and trabecular bone laid down
5/6 1 to several month, when callus has sealed the bone ends. trabecular bone
3/6 from 2-12 days, presence if mesenchymal cells , fibroblasts, new capillaries
6/6 contines for several months. reorganization of bone; original cortex restored.
cervical (7), thoracic (12), lumbar (5), sacrum, coccyx.