Presentation
Patient underwent spinal surgery with initially reasonable clinical response. Two months later the symptoms recurred.
Patient Data
Age: Elderly
From the case:
Interspinous device - displaced
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Lateral
Postoperative films demonstrate an interspinous process decompression device (X-STOP) at the L4/5 level. Note the anterolisthesis of L4 on L5.
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Lateral
Films obtained two months later demonstrate that the device has rotated and shifted posteriorly, out from between the spinous processes.
Case Discussion
Interspinous process decompression devices, like the X-STOP in this case, are a minimally invasive approach to elderly patients with spondylosis. In this case, the device has rotated out from between the spinous processes.