A pedicle subtraction osteotomy (PSO) is a surgical procedure used in adults and children to correct certain deformities of the spine. A spine with too much kyphosis (forward curvature, or “hunchback”) or too little lordosis (inward curvature, or “swayback”) can be corrected with a PSO.

Jun 3, 2024 · Inside the spine deformity surgeons’ community, when one mention “spinal osteotomy” they usually mean a 3-column osteotomy and more specifically a pedicle subtraction osteotomy (PSO), rather than a vertebral column resection (VCR) which is usually termed as “spinal resection”.

Jul 24, 2016 · Pedicle subtraction osteotomy (PSO) is a posterior-based osteotomy that requires resection of the posterior elements, pedicles, and decancellation of the vertebral body in a V-shaped fashion through the transpedicular corridor (FIG 1B).

Pedicle subtraction osteotomy (PSO) consists of creating posteriorly trapezoidal shape of a vertebra, usually L3 or L4, in order to recreate lordosis in the lumbar spine. It is usually indicated to treat rigid kyphotic lumbar spine associated with sagittal imbalance and …

A Pedicle Subtraction Osteotomy (PSO) is a form of surgical treatment that is used to reverse spinal deformities. As the name suggests, osteotomy means “to remove bone.” During a PSO, your doctor will remove (or subtract) a number of bony structures.

Pedicle Subtraction Osteotomy is a surgical procedure performed on the spine to correct severe spinal deformities, such as excessive kyphosis or scoliosis. It involves removing a wedge-shaped section of bone from the vertebral body and posterior elements to realign the spine into a more normal position.

Below is a review of each osteotomy type with indications, limits and pitfalls. The SPO is a posterior column osteotomy in which the posterior ligaments (supraspinous, intra-spinous ligaments and ligamentum flavum) and the facet joints are removed and correction is performed through the disc space.

Lumbar pedicle subtraction osteotomy (PSO) is indicated in the treatment of large sagittal (more than 25 of rigid loss of lordosis) deformities of the lumbar spine or its combination with coronal deformity, especially when they are rigid.