Principles of revision surgery for failed arthroplasty

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QUESTION 1 OF 1

51.An 80 year old lady is being worked up for a revision hip arthroplasty for aseptic acetabular component loosening.You are planning to revise the acetabular component to an uncemented porous coated shell.
Which of the following statements is correct regarding the safe zones of acetabulum?

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QUESTION ID: 1276

1. Anterior-inferior quadrant has good bone stock compared to Posterior-superior quadrant
2. Anterior-superior quadrant is generally considered a safe zone for placement of acetabular screws
3. Risk of external iliac vessel injury is high with posterior-inferior quadrant
4. Risk of injury to inferior gluteal and pudendal vessels is high with posterior-inferior quadrant
5. Risk to superior gluteal vessels is high with anterior superior quadrant
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