Review Question - QID 7024

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THA Other Complications QID: 7024 (SAE10HK.36)

QID 7024 (Type "7024" in App Search)

A 57-year-old man undergoes total hip arthroplasty, has an uncomplicated early postoperative course, and a normal neurovascular status is documented. However, on postoperative day two he develops a progressive foot drop that increases over the next 24 hours. Postoperative repeat radiographs of the hip arthroplasty are unrevealing. There is no suggestion of swelling of the thigh to suggest a subfascial wound hematoma. What is the next most appropriate step?

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MRI of the lumber spine

34%

95/281

MRI of the knee joint

3/281

Electromyography and nerve conduction velocity studies of the sciatic nerve

29%

82/281

Lumbar spine anterior/posterior and lateral radiographs

19%

53/281

Venous Doppler of the lower extremity

16%

44/281

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Spinal stenosis is commonly found in patients with degenerative arthritis of the hip joint and would be a strong possibility for causing a foot drop if the radiographs do not reveal a dislocation or other direct mechanical cause for the sciatic nerve compromise.

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