ArticleEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society2026
Subarachnoid-subarachnoid bypass versus extradural decompression for adhesive syringomyelia: experimental and early clinical evaluation.
Article in European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundAdhesive syringomyelia (SM) is associated with cerebrospinal fluid (CSF) obstruction in the spinal subarachnoid space (SAS). Recurrent obstruction after decompression or arachnoidolysis may limit surgical efficacy, making the durable surgical management of adhesive SM an important challenge in neurosurgery.
methodsRats with MRI-confirmed SM were allocated to S-S bypass, extradural decompression, or vehicle treatment; sham-operated rats served as additional controls. Outcomes included MRI, blinded behavioral assessment, histology, and CT and fluorescent tracer studies. A prospective uncontrolled series of 14 selected patients evaluated technical feasibility, short-term safety, and clinical and radiological changes.
resultsIn the rat model, S-S bypass was associated with greater syrinx regression and more favorable behavioral and histological outcomes than extradural decompression. Distal tracer passage was also improved, whereas scar-associated tissue and recurrent SAS narrowing were observed after extradural decompression. Clinically, all 14 procedures were completed without major complications. At final follow-up, 13 patients were descriptively classified as improved and one as stable, accompanied by modest increases in ASIA sensory and motor scores.
conclusionsIn this rat model, S-S bypass produced more favorable structural and functional outcomes than extradural decompression by providing an alternative pathway across the obstructed segment. The preliminary clinical series supports the technical feasibility and short-term safety of the procedure, but its clinical effectiveness requires confirmation in larger controlled studies.
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