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Basic Science
intermediate
X-Type

Bone Healing Principles

Bone Biology

A 35-year-old man sustains a closed midshaft tibial fracture treated with intramedullary nailing. At 6-week follow-up, radiographs show periosteal callus formation bridging the fracture site. He asks about the healing process and factors that might affect his recovery. Regarding bone healing:

Mark each as TRUE or FALSE

A

Bone healing occurs by two mechanisms: primary (direct) healing requires absolute stability with int...

B

The inflammatory phase (days 1-7) involves hematoma formation, inflammatory cell infiltration, and c...

C

Primary healing is the most common type of fracture healing; secondary healing requires absolute sta...

D

Factors affecting bone healing: local factors include blood supply (most critical), infection, soft ...

E

Non-union is failure to heal by 9 months or no radiographic progress over 3 months; classified as hy...

Answer the questions to see explanations

Click T (True) or F (False) for each option