Ultrasound-Computed Tomography Fusion-Guided Lumbar Plexus Block Treatment After Spinal Fixation: A Case Report

Ultrasound (US)-guided percutaneous lumbar plexus block (LPB), enhanced by ultrasound-computed tomography (US-CT) fusion imaging, offers precise targeting for interventions. In this case, a patient with lumbar disk herniation at L4-L5 level, who had undergone pedicle screw internal fixation, continued to experience persistent low back pain and numbness in both lower limbs. US-CT fusion-guided medial branch block at L4-L5 level significantly alleviated symptoms within 24 hours, with sustained relief for 1 month. Posttreatment, Oswestry Disability Index (ODI) dropped from 88 to 40, confirming effective pain control.