Thoracolumbar osteotomy for postsurgical sagittal imbalance

Area of Science:

• Spine surgery
• Orthopedic surgery
• Scoliosis correction

Background:

• Sagittal plane imbalance is a complex spinal deformity often resulting from scoliosis.
• Multiple previous surgeries can exacerbate spinal deformities, leading to significant functional impairment.
• Posterior spinal fusion techniques are common but may not always adequately address sagittal imbalance.

Purpose of the Study:

• To evaluate the efficacy of posterior thoracolumbar junction osteotomy in correcting sagittal plane imbalance.
• To assess the impact of this technique on thoracic kyphosis and lumbar lordosis.
• To determine the safety and effectiveness of this approach as a standalone procedure.

Main Methods:

• A prospective study involving 12 patients with post-surgical scoliosis and sagittal plane imbalance.
• Surgical intervention involved posterior thoracolumbar junction osteotomy.
• Correction and fixation were achieved using Cotrel-Dubousset instrumentation.

Main Results:

• Significant improvement in thoracic kyphosis from 87 to 41 degrees.
• Increase in lumbar lordosis from 21 to 30 degrees.
• Achieved 8.7 cm posterior displacement of the sagittal weight-bearing axis with no permanent complications.

Conclusions:

• Posterior thoracolumbar junction osteotomy is an effective technique for correcting sagittal plane imbalance in complex scoliosis.
• This posterior-only approach can successfully address apical deformity without the need for anterior surgery.
• Cotrel-Dubousset instrumentation provides reliable correction and fixation for this complex spinal reconstruction.