Quadro-Iliac vs Thoracolumbar Interfascial Plane Block for Analgesia After Single-Level Lumbar Disc Surgery

Samsun University

Status: Enrolling

Conditions: Spinal Stenosis; Acute Pain

Treatments: Other: Quadro-iliac plane block; Other: Classical thoracolumbar interfascial plane block

Study type: Interventional

Funder types: Other

Identifiers

NCT07348419

OMUKAEK 2025/279

Details and patient eligibility

About

The investigators aim to compare the postoperative analgesic efficacy of the classical thoracolumbar interfascial plane block and the Quadro-iliac plane block for postoperative analgesia management after lumbar disc surgery.

Full description

Lumbar spinal stenosis can lead to variable signs and symptoms such as back pain, radiating pain to the lower extremities, and reduced walking capacity. Lumbar disc surgery itself causes significant pain due to extensive dissection and muscle retraction during the procedure. A multimodal analgesic approach is preferred for postoperative pain management after lumbar spine surgery. The addition of regional anesthesia techniques can reduce opioid-related side effects and is associated with earlier mobilization, shorter hospital stay, and improved patient satisfaction.

For patients undergoing lumbar disc surgery, the classical thoracolumbar interfascial plane (TLIP) block and the Quadro-iliac plane block (QIPB) provide effective analgesia for postoperative pain control.

Enrollment: 70 estimated patients

Sex: All

Ages: 18 to 70 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Patients aged 18-70 years,
• Classified as ASA physical status I-III,
• Scheduled to undergo single-level lumbar spinal surgery under general anesthesia
• Who agree to participate in the study by providing written informed consent

Exclusion criteria

• History of bleeding diathesis or current anticoagulant therapy
• Known allergy or hypersensitivity to local anesthetics or opioid medications
• Infection at the planned block injection site
• Previous lumbar spine surgery
• History of gabapentinoid or corticosteroid use within the last 3 weeks
• Inability to use a patient-controlled analgesia (PCA) device
• Suspected pregnancy, confirmed pregnancy, or breastfeeding
• Refusal to undergo the procedure or to participate in the study

Trial design

Primary purpose: Other

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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70 participants in 2 patient groups

Active Comparator: Group QİPB

Other group

Description:

The Quadro-iliac plane block will be performed 30 minutes before lumbar spine surgery

Treatment:

Other: Quadro-iliac plane block

Active Comparator: Group TLİP

Other group

Description:

The classical thoracolumbar interfascial plane (TLIP) block will be performed 30 minutes before lumbar spine surgery.

Treatment:

Other: Classical thoracolumbar interfascial plane block