Effectiveness and Safety of Korean Medicine for Lumbar Stenosis Patients With Sciatica

Inclusion Criteria: * Patients with radiating leg pain with or without low back pain (LBP) (walking pain NRS ≥4) * Patients with dural sac cross-sectional area (DSCA) of \<100 mm2 or morphological grading ≥B as assessed on MRI * Patients with clear neurogenic claudication symptoms (symptoms aggravated with walking, and alleviated upon resting in lumbar flexion position) * Patients who have received surgery recommendation for lumbar spinal stenosis * Patients with plans of receiving Korean medicine treatment for lumbar spinal stenosis for ≥2 months * Patients who have agreed to study participation Exclusion Criteria: * Patients with vascular claudication * Patients with other systemic diseases that may interfere with treatment effect or outcome interpretation * Patients with soft tissue pathologies or pathologies of non-spinal origin that may cause LBP or radiating leg pain (e.g. spinal tumor, rheumatoid arthritis) * Patients for whom acupuncture treatment may be inappropriate or unsafe (e.g. hemorrhagic diseases, blood clotting disorders, history of anti-coagulation medicine intake, serious diabetes with risk of infection, severe cardiovascular diseases, or other conditions deemed unsuitable for acupuncture treatment) * Pregnant patients or patients planning pregnancy * Patients with serious psychological disorders * Patients unable to fill out study participation consent form * Subjects deemed unsuitable for study participation as assessed by the researchers