The Effectiveness and Safety of Dong-A Opalmon® Tablet in Patients With Acquired Lumbar Spinal Stenosis

Inclusion Criteria: * Men or women aged ≥ 19 years * Subjects with acquired Lumbar Spinal Stenosis who show normal results in the Straight Leg Raising (SLR) test and exhibit intermittent claudication, requiring treatment with Dong-A Opalmon® tab * Subjects who voluntarily consent to participate in this observational study Exclusion Criteria: * Subject for whom the medicinal products administration is contraindicated according to the approved domestic drug information: Pregnant women or those who may be pregnant, Subject with genetic disorders such as galactose intolerance, Lapp lactase deficiency or glucose-galactose malabsorption * Subjects considered as unsuitable for participation in this observational study by the principal investigator or sub-investigator