Posterior osteotomy techniques for rigid cervical deformity correction.

Posterior cervical osteotomies are powerful techniques for the correction of rigid cervical deformity. These include a variety of subtypes including partial facet joint resection, complete facet joint resection, opening wedge osteotomy (OWO), and closing wedge osteotomy (CWO). The partial facet joint resection provides limited lordosis but can be applied across multiple levels and provides bony surface for fusion. Complete facet joint resection can also be performed across multiple segments for a cumulative effect and like the partial facet joint resection requires mobility of the anterior column. The OWO is traditionally performed at C7 and involves complete a complete laminectomy, facetectomy, and pediculectomy with special care to fully decompress the C8 nerve roots prior to osteotomy closure. The osteotomy utilizes a fulcrum of rotation in the middle column with shortening of the posterior column and lengthening of the anterior column with an osteoclastic fracture that must be performed with significant care. The CWO is similar to an OWO with the addition of an osteotomy into the vertebral body that is closed like a pedicle subtraction osteotomy (PSO). The goal of this review article is to summarize posterior osteotomy techniques for cervical deformity correction.