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Updated: Aug 20, 2026
Transforaminal Full-Endoscopic Lumbar Foraminotomy Under Local Anesthesia for L5/S1 Adjacent Segment Foraminal Stenosis
Published on: October 17, 2025
[Fluoroscopy guided L5-S1 transforaminal injection as a treatement for s1 radiculopathy]
J L Michel1, S Lemaire, H Bourbon
1Service de radiologie A, Hôpital Gabriel-Montpied, Clermont-Ferrand-Cedex, France. jlmichel@chu-clermontferrand.fr
Objective:
To assess the efficacy of fluoroscopy guided L5-S1 transforaminal steroid injections for the treatment of S1 radiculopathy secondary to intervertebral disk disorder.
Method:
41 patients were included: prospective study (20 patients) and retrospective study (21 patients). All patients suffered from S1 radiculopathy secondary to nerve root compression by intervertebral disk material, as demonstrated by lumbar spine CT. The patients underwent 2 fluoroscopy guided L5-S1 transforaminal injections of steroid (Hydrocotancyl 125 mg), at 8 days interval.
Results:
60% of patients showed significant improvement of their painful radiculopathy at day 8 (n:41), 60-67% at day 30 (n:41) and 67% at day 90 (n:18).
Conclusion:
Fluoroscopy guided L5-S1 transforaminal injection showed good efficacy in the treatment of S1 radiculopathy.