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Glossary

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Glossary items beginning with P (8).

Pedicle - The part of each side of the neural arch of a vertebra which projects backward from the vertebral body. It connects the lamina with the vertebral body.

PLIF - Posterior Lumbar Interbody Fusion - A technique for performing an anterior fusion (front of the spine) of 2 vertebrae from a posterior approach.

Posterior - Located behind a structure, such as relating to the back side of the body.

Posterior Longitudinal Ligament - A ligament which attaches to the posterior aspect of every vertebra, from the base of the skull to the sacrum.

Posterior Spinal Fusion - A surgical technique which involves roughening or removing the hard bony surfaces (decortication) of the lamina(e), spinous processes, and facet joints, to stimulate two or more spinal bones (vertebrae) to heal together (fusion). Bone grafting with autogenous and/ or allograft bone is used to enhance the fusion process. Instrumentation (implants) may also be used.

Primary Curve - The first, or earliest, curve to appear.

Proximal - Nearer or closer to a point of reference; opposite of distal.

Pseudarthrosis - An area of the spinal fusion where the bone did not heal (fuse). Often found with broken instrumentation and, in some instances increased pain, although not always.