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QUESTION 1 OF 1

A 40-year-old man has been referred to the orthopaedic clinic with a 6-week history of (right) hip pain. The pain was unrelated to trauma and was a severe, deep aching groin pain worse at night. The patient has a limp with pain on weight bearing and a positive Trendelenburg sign. Radiographs of his hips are normal an MRI scan of his pelvis is shown (Figure 1).

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Figure 1.T2 weighted sagittal  MRI images pelvis 
The most likely diagnosis is

QUESTION ID: 1246

1. Bone marrow oedema syndrome
2. Infection (septic arthritis)
3. Osteochondromatosis
4. Osteonecrosis
5. Reflex sympathetic dystrophy