Syringo-Subarachnoid Shunt Placement: A Minimally Invasive Technique Using Fixed Tubular Retractors—Three Case Reports and Literature Review

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Figure 1
Intraoperative fluoroscopy demonstrating localization of required level and the fixed tubular retractor in situ.
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Figure 2
Case 1. (A) and (B) Preoperative magnetic resonance imaging T2 weighted sagittal and axial (at D2) showing extensive cervico-dorsal syringomyelia. (C) and (D) Postoperative magnetic resonance imaging T2 weighted sagittal and axial (at D2) showing resolution of syrinx with laminotomy defect and shunt tube in place (arrows).
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Figure 3
Case 2. (A), (B), and (C) Preoperative magnetic resonance imaging T2 weighted sagittal and axial (at D2, D10), showing 2 syringeal cavities separated by a thin fibrous septum near D6. (D), (E), and (F) Postoperative magnetic resonance imaging T2 weighted sagittal and axial (at D2, D10), showing resolution of syrinx with laminotomy defect and shunt tube in place (arrows).
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Figure 4
Case 3. (A) and (B) Preoperative magnetic resonance imaging T2 weighted sagittal and axial (at C7), showing large cervico-dorsal syrinx with thinning of the cord. (C) and (D) Postoperative magnetic resonance imaging T2 weighted sagittal and axial (at C7), showing resolution of syrinx with laminotomy defect and shunt tube in place (arrows).