Article Figures & Data
Figures
- Figure 1.
A 16-year-old male clinically suggested to have Hirayama disease. (A) and (B) The atrophy of dorsal interosseous muscles of the hand, the thenar, hypothenar muscles. (C) The atrophy of the medial aspect of forearm muscles with preservation of the brachioradialis.
- Figure 2.
Cervical MRI of the 16-year-old patient in the neutral position. (A) Sagittal T2-weighted image showing a focal atrophy of the spinal cord at C5-C6 levels with no signal abnormality (arrow) (B) Axial T2-weighted image at C6 level showing flattening of the cord (arrow).
- Figure 3.
Cervical MRI of the 16-year-old patient in the flexion position. (A) Sagittal T2-weighted and (B) Axial T2-weighted images at C5 level showing the posterior dura was displaced anteriorly (arrow) causing the widening of posterior epidural space (asterisk) and spinal stenosis. The spinal cord at C5-C6 levels was compressed between the dura posteriorly and the vertebrae anteriorly.
- Figure 4.
An 18-year-old male clinically suggested to have Hirayama disease. (A) and (B) The wasting of the dorsal interosseous muscle and the palmar aspect muscles, as well as weakness in finger extension. (C) The wasting of the medial aspect of forearm muscles with preservation of the brachioradialis.
- Figure 5.
Cervical MRI of the 18-year-old patient in the neutral position. (A) Sagittal T2-weighted image showing a subtle medullary atrophy at C5-C6 levels with no signal abnormality (arrow) (B) Axial T2-weighted image at C6 level showing a flattening of the cord and detachment of the posterior dura (arrow).
- Figure 6.
Cervical MRI of the 18-year-old patient in the flexion position. (A) Sagittal T2-weighted and (B) Axial T2-weighted images at C6 level showing the enlargement of the posterior epidural space due to the anterior displacement of the posterior dura causing the spinal stenosis.
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