Review Question - QID 6013

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Hip Osteonecrosis QID: 6013 (SAE07HK.53)

QID 6013 (Type "6013" in App Search)

A 30-year-old patient has had severe left hip pain and difficulty ambulating, necessitating the use of a cane, for the past 6 months. A photomicrograph of the femoral head sectioned at the time of surgery is shown in Figure 31. What is the most likely diagnosis?

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Renal osteodystrophy

23/692

Pyogenic osteomyelitis

7/692

Osteoarthritis

9/692

Osteonecrosis

92%

640/692

Tuberculosis osteomyelitis

11/692

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The photomicrograph demonstrates a wedge-shaped infarct with femoral head collapse; therefore, the diagnosis is osteonecrosis of the femoral head. Perthes disease and osteoarthritis do not involve a wedge-shaped defect. Tuberculosis of the hip joint results in greater destruction of the articular cartilage.

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