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Orthopaedics · Spine: SCIWORA
Sample itemA 5-year-old falls from a swing and has transient numbness of both arms, followed by weakness. Plain films and CT show no fracture or malalignment, and MRI shows cord oedema. What is this condition?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
B. SCIWORA from paediatric spinal elasticity
Children have a more elastic and mobile spine than the cord, so a stretching force can injure the cord with no bony injury. This spinal cord injury without radiographic abnormality is investigated with MRI and managed by immobilisation and supportive care.
Option by option
A. Transient brachial plexus neurapraxia
A plexus neurapraxia affects one arm and does not cause cord oedema.
B. SCIWORA from paediatric spinal elasticity (correct)
Correct. Cord injury with normal bony imaging in a young child is typical of SCIWORA.
C. Atlantoaxial rotatory subluxation
Rotatory subluxation gives a fixed head tilt and shows abnormal alignment on CT.
D. Conversion disorder
Conversion disorder would not produce objective cord oedema on MRI.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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