Pathology

Question 1

Fracture types

Answer 1

1. Simple
2. Compound
3. Comminuted
4. Displaced
5. Stress
6. Green stick
7. Pathologic

Question 2

Fracture healing

Answer 2

1. Week 1: clot formation
  A. Fibrin mesh
  B. PDTF, TGF-beta, FGF
  C. Osteoprogenitors activated
  D. Inc osteoblasts/clast activity
2. Soft tissue callous -> bony callous
  A. Deposit woven bone
  B. Cartilage ossified
  C. Fractured ends bridged and mineralized