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Bone Maintenance (Repair (3) Consolidation: Woven bone (random collagen)…
Bone Maintenance
Repair
3) Consolidation: Woven bone (random collagen) into lamellar bone (parallel strands)
4) Remodelling: Trabecular bone into compact (Via resorption then deposition)
2) Fracture Callus: Osteoblasts proliferate
1) Haematoma and inflammatory response
Structure
Osteoblast
Bone formation and maintenance
Osteoclast
Bone resorption
Osteoporosis: Bone resorption outweighs formation
Thinning and lowers density (trabecular microarchitecture)
Communicate via caniculi
Osteon (Haversian System)
Unit of Compact Bone (collagen + mineral)
Contains blood supply
Both trabecular and compact bone adapted to spread/distribute load
Joints
Cartilaginous: rib-sternum
Synovial: Lubrication- knee
Fibrous: cranial suture
Development
Epiphyseal Growth Plate: Growth in cartilage
Ossification increases length
Neural crest + mesoderm