Hip dislocation

Test your learning

1. Which of the following is the most common type of hip dislocation?

• A) Anterior Dislocation
• B) Posterior Dislocation
• C) Superior Dislocation
• D) Inferior Dislocation
  Answer: B) Posterior Dislocation

2. What is the primary stabilizing factor for the hip joint?

• A) Labrum
• B) Capsule
• C) Iliofemoral ligament
• D) Bony fit of the femoral head and acetabulum
  Answer: D) Bony fit of the femoral head and acetabulum

3. Which imaging modality is used to detect avascular necrosis (AVN) after a hip dislocation?

• A) X-ray
• B) CT Scan
• C) MRI
• D) Ultrasound
  Answer: C) MRI

4. What is the initial treatment for a hip dislocation?

• A) Open Reduction
• B) Closed Reduction under anesthesia
• C) Immediate surgery
• D) Traction for 4-6 weeks
  Answer: B) Closed Reduction under anesthesia

5. Which of the following is an indication for surgical intervention in hip dislocation?

• A) Non-concentric reduction
• B) Stable dislocation
• C) Immediate reduction within 12 hours
• D) No associated fractures
  Answer: A) Non-concentric reduction

6. What is the main complication of delayed reduction of a hip dislocation?

• A) Sciatic nerve injury
• B) Avascular necrosis (AVN)
• C) Myositis ossificans
• D) Recurrence
  Answer: B) Avascular necrosis (AVN)

7. Which method is used for closed reduction in hip dislocation, where the patient is in the prone position with leg hanging off the stretcher?

• A) Allis Method
• B) Bigelow-Keverse Method
• C) Stimson Gravity Method
• D) Kocher-Langenbeck Method
  Answer: C) Stimson Gravity Method

8. What is the most common mechanism of posterior hip dislocation?

• A) Fall on the side
• B) Dashboard injury
• C) Flexed knee trauma
• D) Direct blow to the greater trochanter
  Answer: B) Dashboard injury

9. Which of the following is NOT typically a part of posterior dislocation clinical presentation?

• A) Flexion
• B) Adduction
• C) External rotation
• D) Shortening of the leg
  Answer: C) External rotation

10. Which surgical approach is used for posterior dislocation with associated fractures?

• A) Smith-Peterson approach
• B) Kocher-Langenbeck approach
• C) Hardinge approach
• D) Watson-Jones approach
  Answer: B) Kocher-Langenbeck approach

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