A patient has come to the orthopedic clinic for a follow-up appointment 6 weeks after fracturing his ankle. Diagnostic imaging reveals that bone union is not taking place. What factor may have contributed to this complication?
A) Inadequate vitamin D intake
B) Bleeding at the injury site
C) Inadequate immobilization
D) Venous thromboembolism (VTE)
Ans: C
Feedback:
Inadequate fracture immobilization can delay or prevent union. A short-term vitamin D deficiency would not likely prevent bone union. VTE is a serious complication but would not be a cause of nonunion. Similarly, bleeding would not likely delay union.
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