Catgut Embedding for Lumbar Spondylosis With Blood Stasis Syndrome

Inclusion Criteria: * Age and Gender: Patients aged 18 to 65 years, regardless of gender. * Diagnosis of Chronic Low Back Pain: Confirmed diagnosis of low back pain due to lumbar spondylosis with the following criteria: * Clinical: Mechanical spinal pain. * Radiographic (X-ray): Joint space narrowing, subchondral sclerosis, and osteophytes on the vertebral bodies. * Absence of systemic symptoms such as fever, unexplained weight loss, or anemia. * Duration: Pain duration exceeding 3 months. * Pain Intensity: Visual Analog Scale (VAS) score for low back pain \> 40 mm. * Traditional Medicine Diagnosis: Diagnosed with Low back pain under the "Blood Stasis" syndrome according to Decision No. 5013/QD-BYT (2020) by the Ministry of Health: Pain occurs after heavy lifting or sudden movement. Severe localized pain, pain increases with movement/pressure. Limited range of motion. Tongue: Purple or with stasis points. Pulse: Choppy. * Communication: Capable of communicating fluently in Vietnamese to complete survey questionnaires. * Consent: Volunteers who agree to participate and sign the Informed Consent Form. Exclusion Criteria: * Neurological Deficits: Patients with clinical neurological abnormalities in the lower limbs. * Surgical Indications: Patients with indications for spinal surgery due to severe neurological deficits. * Co-morbidities: Vertebral fractures, spinal inflammation/infection, malignant tumors, neuromuscular scoliosis, or degenerative neurological diseases. * Hypersensitivity: History of hypersensitivity or adverse reactions to electro-acupuncture or catgut embedding treatments.