PMC10246310_01
(a and b) Preoperative magnetic resonance imaging. (a and b) T2-weighted image showed right S1 nerve root compression by lumber disc herniation (red arrow).
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F1
At surgery, a wound drain was placed [Figures 1 and 2].
(a and b) Postoperative photos of fixed drain tube with non-absorbable suture at the time of pain recurrence.
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F2
At surgery, a wound drain was placed [Figures 1 and 2].
(a and b) The comparative X-ray between postoperative day 0 and day 1. (a) Postoperative X-ray image at day 0. Drain was correctly placed dorsal to the S1 lamina. (b) Postoperative X-ray image at day 1. Drain was migrated into the right L5S1 lateral recess.
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F3
Immediately postoperatively, the patient's symptoms resolved, and the immediate post-operative plain X-ray showed that the drain was located dorsal to the S1 lamina [Figure 3a]. Now, the X-rays, MR, and CT studies all confirmed that the drain had migrated into the right L5S1 lateral recess [Figures 3b and 4].
(a and b) Postoperative magnetic resonance imaging. (a and b) T2-weighted image in sagittal section and constructive interference in steady state in coronal section showed spinal nerve root compression with drainage tube (red arrow). (c and d) Postoperative computed tomography (CT). (c and d) Drainage tube was migrated into the right L5S1 lateral recess on sagittal and axial CT images.
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F4
Now, the X-rays, MR, and CT studies all confirmed that the drain had migrated into the right L5S1 lateral recess [Figures 3b and 4].