Ossification

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2. ??? ?? ????
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2-1. ?? ??? ???? ??1. ?? ??
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Ossification
Ossification ?? ?? ??? ??3??? ???? ????? ? ???
??? ?? ? ????? ????, ???? ? ??? ???? ????? ??
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Primary ossification center forms
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Medullary cavity develops
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Secondary ossification center is established
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Formation of compact bone
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The mature bone
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Hyaline cartilage
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2. ?? ??? ??

• Flat bone

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Irregular bone
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Structure of bone
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2- 2. ??? ??? ??? ?? ??1. ??? ??

• ???? ?? ???? ?? ?? ??? ?? ????? ??? ??? ??? ??

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2. ??? ??1) ??? ??? ?? ??

• ?????? ??
• ?. Greenstick fracture

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• ?. Fissured fracture

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• ?. Perforating fracture

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• ?. Depressed fracture

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(2) ????? ??

• ?. Simple fracture

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• ?. Impacted fracture

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• ?. Comminuted fracture

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• ?. Open fracture

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• ?. Complicated
• fracture

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• ?. Compression fracture

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2) ???? ??? ?? ??

• (1) Transverse fracture

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• (2) Oblique fracture spinal fracture

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• (3) Longitudinal fracture

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3) ??? ?? ??? ?? ??

1. Lateral displacement
2. Angular displacement
3. Overlapping fracture
4. Rotation displacement

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4) ???? ???? ??? ?? ??

• Epiphysis fracture
• Metaphysis fracture
• Diaphysis fracture

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• Proximal fracture Distal fracture

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• Shaft or middle fracture

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• Trochanteric fracture
• Subtrochanteric fracture
• Supracondylar fracture

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• Figure 1 Evans' classificationType I
  Undisplaced 2-fragment fractureType II
  Displaced 2-fragment fractureType III
  3-fragment fracture without posterolateral
  support, owing to displacement of greater
  trochanter fragmentType IV 3-fragment fracture
  without medial support, owing to displaced lesser
  trochanter or femoral arch fragmentType V
  4-fragment fracture without posterolateral and
  medial support (combination of Type III and Type
  IV)R Reversed obliquity fracture

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5) ??? ??? ?? ??? ??

• (1) Pathologic fracture

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• (2) Fatigue fracture

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3. ??? ??

• ??? ??? ??
• Crepitus
• Pain
• Deformity
• Swelling
• Loss of the function
• Dislocation of the skin
• Change of attitude
• Others ??, shock, dyspnea

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2-3. ??? ????1. ??? ?? ? ????

1. Inflammatory phase
2. Reparative phase
3. Remodeling phase

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1.. Hematoma Phase 2. Inflammatory Phase 3. Soft
Callus Phase 4. Hard Callus Remodeling Phase
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2. ??? ??? ????

• ???? ??? ??? ??? ????? ??? ??? ??? ?? ??? ??? ???
  ??? ?? ?? ??.

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3. ??? ??? ????

• ???? ???? ????? ???? ?? ?? ???? ???? ?? ??? ????
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  ????? ???????.
• ???? ????? ?? ??? ??? ????? ?? ???? ???? ?????
  ????.

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4. ????? ??? ??? ???

• 1) ??
• 2) ????? ??
• 3) ???? ??
• 4) ??? ??
• 5) ?? ??
• 6) ? ??? ??

• 7) ?? ??? ??? ??
• 8) ??? ??
• 9) ????
• 10) ?? ???? ??, ??? ???,???? ????? ??, ???, ??
  ??

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5. ????? ????

• Malunion ??? ???? ??? ?????? ????? ??? ???? ???
  ??

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• 2) Delayed union ??? ???? ??? ?? ???? ???? ??
  ?? ?, ???? ???? ?? ??

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• 3) Nonunion