[Injection of the sacrolumbar roots: a complementary method of staging sciatica. 18 cases]

Area of Science:

• Neurology
• Radiology
• Pain Management

Background:

• Diagnosing the precise cause of sciatica can be challenging, particularly in patients with prior lumbar surgery.
• Conventional contrast X-ray examinations may be difficult to interpret or yield inconclusive results.
• Accurate localization of the affected sacrolumbar nerve root is crucial for effective treatment planning.

Purpose of the Study:

• To evaluate the utility of sacrolumbar root injection as a diagnostic tool for sciatica.
• To determine the effectiveness of local anesthetic injection in identifying the symptomatic nerve root.
• To assess the role of this technique in complex cases and when standard imaging is inadequate.

Main Methods:

• Sacrolumbar roots were injected with a local anesthetic (Xylocaine) to visualize nerve root morphology.
• The primary diagnostic criterion was the disappearance of radicular pain following the injection.
• The study included 18 patients, with a focus on those with previous lumbar surgeries or non-conclusive imaging.

Main Results:

• In 14 out of 18 patients, pain relief after injection successfully identified the affected nerve root.
• In 3 cases, the procedure helped to effectively rule out an organic lesion as the cause of pain.
• The examination was well-tolerated, with no reported side effects, even in patients with iodine allergy.

Conclusions:

• Sacrolumbar root injection is a valuable diagnostic method for identifying the source of sciatica.
• It is particularly useful in post-lumbar surgery patients and when conventional diagnostic methods fail.
• The procedure offers a safe and effective way to confirm or exclude specific nerve root involvement.