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Partial pedicle subtraction osteotomy as an alternative option for spinal sagittal deformity correction
Ki-Tack Kim1, Dae-Hyun Park, Sang-Hun Lee
1Department of Orthopaedic Surgery, Spine Center, Kyung Hee University Hospital at Gangdong, Seoul, Korea.
Spine
|March 1, 2013
Summary
Partial pedicle subtraction osteotomy (PPSO) offers a safe and reliable method for correcting spinal sagittal deformities, providing intermediate correction rates with no significant loss of correction or complications over two years.
Area of Science:
- Spine surgery
- Orthopedic surgery
- Spinal deformity correction
Background:
- Existing osteotomy techniques for spinal sagittal deformities have limitations.
- A technique is needed to achieve correction angles between Smith-Petersen osteotomy and pedicle subtraction osteotomy (PSO).
- The thoracic spine presents unique challenges for corrective osteotomies.
Purpose of the Study:
- To describe the partial pedicle subtraction osteotomy (PPSO) technique.
- To evaluate the clinical and radiological outcomes of PPSO.
- To assess PPSO's effectiveness in spinal sagittal deformity correction.
Main Methods:
- Retrospective study of 38 patients (31-72 years) undergoing PPSO for spinal sagittal deformity.
- Follow-up period of 30.1 months.
- Assessments included Oswestry Disability Index, correction angles, correction loss, pseudoarthrosis, and complications.
Main Results:
- Significant improvement in Oswestry Disability Index scores (P = 0.001).
- Mean immediate postoperative correction of 18.8°, maintained at 18.4° at 2 years.
- No significant loss of correction, pseudoarthrosis, or neurological complications observed.
Conclusions:
- PPSO provides intermediate correction rates, falling between Smith-Petersen osteotomy and PSO.
- PPSO is a safe and reliable procedure for spinal sagittal deformities.
- PPSO is effective even for thoracic spine deformities.
