Current concepts of spondylosis and posterior spinal motion preservation for radiologists

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...

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Bibliographic Details
Published in:Skeletal radiology 2021-11, Vol.50 (11), p.2169-2184
Main Authors: Porrino, Jack, Rao, Aditya, Moran, Jay, Wang, Annie, Grauer, Jonathan, Haims, Andrew, Kani, Kimia
Format: Article
Language:English
Subjects:
Back surgery
Biomechanical Phenomena
Central nervous system diseases
Cervical Vertebrae
Compression
Devices
Humans
Imaging
Lumbar Vertebrae - diagnostic imaging
Lumbar Vertebrae - surgery
Medicine
Medicine & Public Health
Nuclear Medicine
Orthopedics
Pathology
Pedicle screws
Preservation
Radiologists
Radiology
Range of Motion, Articular
Review Article
Skin & tissue grafts
Spinal cord
Spinal Fusion
Spine (cervical)
Spine (lumbar)
Spondylosis
Spondylosis - diagnostic imaging
Spondylosis - surgery
Sutures
Vertebrae
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Description
Summary: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.
ISSN:0364-2348
1432-2161
DOI:10.1007/s00256-021-03840-6