Is it Really Necessary Going All Over the Top in Patients With Symptomatic Lumbar Spinal Stenosis?

Inclusion Criteria: * Surgical indication determined by: * Lower back pain and/or lower extremity pain for more than 3 months. * Pain refractory to conservative medical management (analgesics, physical therapy, epidural block). * Clinical criterion of neurogenic claudication defined as a score ≥11 on the N-CLASS scale. * Preoperative magnetic resonance imaging (MRI) showing lumbar canal stenosis. * Patient consents to the proposed surgical intervention. * Patient agrees to participate in the study by signing the informed consent form. Exclusion Criteria: * Foraminal or lateral recess stenosis. * Symptomatic disc herniation at the segment to be treated. * Spondylolisthesis \> Grade I (Meyerding) (translation \>25% of the vertebra) or spondylolysis. * Radiological instability defined as \>5 mm of anteroposterior translation on dynamic flexion-extension spine X-rays. * Scoliosis with Cobb angle \>30°. * Compression fracture at the level to be treated. * Prior surgery at the same segment to be treated. * Prior infection at the segment to be treated. * Contraindication for MRI. * Diagnosis of major depressive disorder or dysthymia according to DSM-V criteria.