Current concepts of spondylosis and posterior spinal motion preservation for radiologists

June 17, 2021

Review

doi: 10.1007/s00256-021-03840-6.

Online ahead of print.

Affiliations

¹ Yale Radiology and Biomedical Imaging, Yale University, 330 Cedar Street, New Haven, CT, 06520, USA. [email protected].
² Yale Radiology and Biomedical Imaging, Yale University, 330 Cedar Street, New Haven, CT, 06520, USA.
³ Yale School of Medicine, Yale University, 333 Cedar Street, New Haven, CT, 06510, USA.
⁴ Yale Medicine Orthopedics and Rehabilitation, Yale University, 800 Howard Ave, 1st Floor, New Haven, CT, 06519, USA.
⁵ Department of Radiology, University of Maryland Medical Center, S Greene St, Baltimore, MD, 21201, USA.

Item in Clipboard

Review

Jack Porrino et al.

Skeletal Radiol.

2021.

doi: 10.1007/s00256-021-03840-6.

Online ahead of print.

Affiliations

¹ Yale Radiology and Biomedical Imaging, Yale University, 330 Cedar Street, New Haven, CT, 06520, USA. [email protected].
² Yale Radiology and Biomedical Imaging, Yale University, 330 Cedar Street, New Haven, CT, 06520, USA.
³ Yale School of Medicine, Yale University, 333 Cedar Street, New Haven, CT, 06510, USA.
⁴ Yale Medicine Orthopedics and Rehabilitation, Yale University, 800 Howard Ave, 1st Floor, New Haven, CT, 06519, USA.
⁵ Department of Radiology, University of Maryland Medical Center, S Greene St, Baltimore, MD, 21201, USA.

Item in Clipboard

Abstract

Spinal fusion is performed to eliminate motion at a degenerated or unstable segment. However, this is associated with loss of motion at the fused levels and increased stress on adjacent levels. Motion-preserving implants have been designed in effort to mitigate the limitations of fusion. This review will focus on posterior spinal motion-preserving technologies. In the cervical spine, laminoplasty is a posterior motion-preserving procedure used in the management of myelopathy/cord compression. In the lumbar spine, motion-sparing systems include interspinous process devices (also referred to as interspinous process spacers or distraction devices), posterior dynamic stabilization devices (also referred to as pedicle screw/rod fixation-based systems), and posterior element replacement systems (also referred to as total facet replacement devices). Knowledge of the intended physiologic purpose, hardware utilized, and complications is important in the assessment of imaging in those who have undergone posterior motion preservation procedures.

Keywords:

Fusion; Interspinous process device; Laminoplasty; Posterior dynamic stabilization device; Posterior element replacement system; Spondylosis.

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