Nonunion and Delayed Union in Fracture Repair Process
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Questions and Answers

What is the pathophysiology of hypertrophic nonunion?

  • Excessive bone resorption and delayed healing
  • Inadequate blood supply and poor stability
  • Adequate stability but poor blood supply
  • Adequate blood supply with biology and abundant callus formation (correct)
  • Which classification of nonunion is associated with inadequate immobilization or blood supply?

  • Oligotrophic nonunion
  • Hypertrophic nonunion
  • Atrophic nonunion (correct)
  • Septic nonunion
  • What imaging technique is essential in the assessment of nonunions?

  • MRI scan
  • Ultrasound scan
  • X-rays (correct)
  • PET scan
  • Which type of nonunion typically heals with mechanical stability?

    <p>Hypertrophic nonunion</p> Signup and view all the answers

    What is a characteristic feature of oligotrophic nonunion?

    <p>Excessive bone resorption</p> Signup and view all the answers

    What can lead to a septic nonunion?

    <p>Metabolic issues and immunological problems</p> Signup and view all the answers

    What is a characteristic feature of oligotrophic nonunion?

    <p>Inadequate reduction with fracture fragment displacement</p> Signup and view all the answers

    What is a potential cause of atrophic nonunion?

    <p>Metabolic issues</p> Signup and view all the answers

    What is the key difference between hypertrophic and oligotrophic nonunions?

    <p>Callus formation</p> Signup and view all the answers

    Which type of nonunion is associated with inadequate immobilization or blood supply?

    <p>Atrophic nonunion</p> Signup and view all the answers

    What is one factor that can contribute to pseudoarthrosis?

    <p>Nutrition</p> Signup and view all the answers

    In the context of nonunions, what does pseudoarthrosis refer to?

    <p>Failure of bony union at the fracture site</p> Signup and view all the answers

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