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Review Question - QID 1162

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QID 1162 (Type "1162" in App Search)
A 30-year-old male sustains the injury seen in Figure A after a motor vehicle collision. Which of the following is the most likely complication at 2-year follow-up?
  • A

Avascular necrosis

88%

1591/1812

Hip instability

0%

9/1812

Malunion

8%

140/1812

Chondrolysis

2%

32/1812

Ipsilateral medial knee degenerative changes

2%

34/1812

  • A

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Figure A shows a displaced femoral neck fracture. Avascular necrosis (AVN) and nonunion are the two most common complications after femoral neck fractures in the young adult.

Dedrick et al found nonunion of the fracture site was observed in 20% and avascular necrosis in 36% of young patients with femoral neck fractures. In addition, they reported that of patients with subcapital fractures, 83% developed nonunion or avascular necrosis, compared to 21% with a more distal femoral neck fracture.

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