Abstract
Hip II Structured SBA Questions
Hip II Structured SBA Questions
2. A 78-year-old female has been listed for total hip arthroplasty and noted to have protrusio on her anteroposterior (AP) radiograph.
Which of the following conditions is not commonly associated with acetabular protrusio?
3. A 42-year-old male presents to the orthopaedic clinic with a 2-month history of left hip pain. His anteroposterior radiograph is shown here (Figure 4.1).
Figure 4.1 Anteroposterior (AP) radiograph hips
Which of the following is not associated with his condition?
4. A 24-year-old manual labourer presents with severe post-traumatic hip arthritis. Hip fusion has been discussed at the regional MDT.
What is the optimal position for hip arthrodesis?
5. On counselling the man in question 5 in the outpatient clinic regarding the proposed hip fusion, you mention ipsilateral knee pain as a possible long-term complication of the procedure.
What percentage of patients develop ipsilateral knee pain following hip arthrodesis?
6. Which of the following results in increased abductor muscle force when performing a single leg stance after arthroplasty?
7. A patient presents with a fractured metal stem of a total hip arthroplasty. On closer inspection of the previous anteroposterior radiographs of their hip taken 6 months ago, there was evidence of loosening.
In which Gruen zones would loosening be expected in the pre-fracture radiographs in this scenario?
8. Which of the following is the best mode of imaging to assess for a pseudotumour associated with a metal-on-metal hip resurfacing?
9. A 60-year-old male falls off a camel while on holiday in Lanzarote and suffers a fracture to the ceramic head of his left total hip arthroplasty (THA). The THA was performed 2 years previously; components included an uncemented titanium cup with polyethylene liner and an uncemented stem with a ceramic head. Prior to the fall, he was completely happy with the hip.
Which of the following is the most appropriate procedure?
11. One year after primary total hip arthroplasty performed using a Southern Moore approach a patient asks why his foot turns inwards when he walks?
The most likely cause would be which of the following?
12. When drilling a screw to augment fixation of an uncemented acetabular cup, profuse bleeding is encountered and the patient becomes hypotensive.
Which vessel has been injured?
13. Which of the following is the correct description of one of the quadrants described for acetabular screw placement?
Anterior superior: Superior to a line drawn from the anterior superior iliac spine passing through the centre of the acetabulum and anterior to a line drawn perpendicular to this also passing through the centre of the acetabulum
Posterior inferior: Inferior to a line drawn from the anterior superior iliac spine passing through the centre of the acetabulum and posterior to a line drawn perpendicular to this also passing through the centre of the acetabulum
Posterior superior: Superior to a line drawn from the anterior superior iliac spine passing through the centre of the acetabulum and posterior to a line drawn perpendicular to this also passing through the centre of the acetabulum
Posterior superior: Superior to a line drawn from the anterior superior iliac spine passing through the centre of the acetabulum and inferior to a line drawn perpendicular to this also passing through the centre of the acetabulum
Posterior superior: Posterior to a line drawn from the anterior superior iliac spine passing through the centre of the acetabulum and superior to a line drawn perpendicular to this also passing through the centre of the acetabulum
14. A 78-year-old male is listed for total hip arthroplasty (THA). He is a Jehovah’s Witness and does not want any blood products to be given.
What is the best way to reduce blood transfusion requirement in a Jehovah’s Witness undergoing THA?
15. You are beginning a total hip arthroplasty in theatre in a diabetic. A surgical house officer is assisting you and asks about the infection risk.
Which factor has the biggest influence in reducing prosthetic joint infection?
17. Which of the following structures exits the greater sciatic foramen and does not re-enter the lesser sciatic foramen?
19. Which anatomical variation of the sciatic nerve exiting the greater sciatic foramen is most frequently observed?
20. In the days following a total hip arthroplasty, a patient was found to have 0/5 power in ankle dorsiflexion and foot eversion but 5/5 power in ankle plantar flexion.
Provided the injury was a neuropraxia at the level of the hip joint, which muscle would you expect to recover first on assessment with electromyography?
21. A professional tennis player develops pain around the hip 2 months after metal-on-metal hip resurfacing.
Which imaging modality can detect heterotopic ossification earliest?
24. Acetabular protrusio can be defined using an anteroposterior radiograph as which of the following?
25. A 37-year-old male who is training for the long-distance triathlon world championships, Ironman Hawaii, presents with a 6-week history of groin pain.
Which of the following diagnoses requires urgent operative intervention?
30. When performing a total hip arthroplasty, what is the optimal combined version of the acetabular cup and femoral stem?
31. A patient has suffered multiple dislocations of a total hip arthroplasty and has failed conservative measures.
Which of the following is an indication for a constrained liner?
32. When performing the Hardinge approach to the hip, neurovascular structures are placed in jeopardy if the gluteus medius is split too far proximally.
What is the maximum safe split above the tip of the greater trochanter that does not place the nerve at risk?
34. Smith-Petersen first described a direct anterior approach to the hip.
Which vessel is sacrificed as part of this approach to the hip?
36. A 44-year-old male has deteriorating hip pain secondary to osteonecrosis. Symptoms have failed to improve despite conservative measures including protected weight bearing. A subchondral lucent line can be seen on the anteroposterior radiographs of the hip.
What is the most appropriate management?
37. Which of the following factors is not responsible for osteolysis around a total hip arthroplasty secondary to polyethylene wear debris?