What question did this study set out to answer?

To establish normative reference data for lumbar intervertebral motion and center of rotation in asymptomatic, nondegenerated lumbar spines using validated computer-assisted radiographic measurement tools.

August 21, 2015Journal of Neurosurgery SpineOpen Access

Sagittal plane lumbar intervertebral motion during seated flexion-extension radiographs of 658 asymptomatic nondegenerated levels

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Authors

BSBlake N. StaubTexas Back Institute PHPaul J. HolmanMethodist Hospital CRCharles A. ReitmanMedical University of South Carolina

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Implication

Observational study characterizes lumbar intervertebral motion across 658 nondegenerated levels in asymptomatic adults, establishing normative benchmarks for spinal stability.

Key Points

To establish normative reference data for lumbar intervertebral motion and center of rotation in asymptomatic, nondegenerated lumbar spines using validated computer-assisted radiographic measurement tools.
Acquired seated flexion-extension radiographs in 162 asymptomatic volunteers and analyzed lumbar motion using computer-assisted image analysis.
Graded 803 lumbar levels using the Kellgren-Lawrence classification system, isolating 658 nondegenerated levels (grade < 2) for evaluation.
Measured intervertebral rotation, translation (both in millimeters and percentage of endplate width), translation per degree of rotation, and center of rotation coordinates across each lumbar level.
Motion parameters showed significant level dependence, with the upper limits of the 95% CIs for anteroposterior translation spanning from 2.1 mm (6.2% endplate width) to 4.6 mm (13.3% endplate width).
Intervertebral rotation upper limits ranged from 16.3° to 23.5°, and upper limits for the ratio of translation per degree of rotation ranged from 0.49% to 0.82% endplate width per degree.
Center of rotation coordinates exhibited consistent, level-dependent spatial clustering patterns across the nondegenerated lumbar spine.

Cite This Study

Staub et al. (2015) studied this question.

synapsesocial.com/papers/6a9c5f2d7b3d804a098b2ded https://doi.org/10.3171/2015.3.spine14898

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Implication

Observational study characterizes lumbar intervertebral motion across 658 nondegenerated levels in asymptomatic adults, establishing normative benchmarks for spinal stability.

Sagittal plane lumbar intervertebral motion during seated flexion-extension radiographs of 658 asymptomatic nondegenerated levels

Discussion

Member takes

Implication

Key Points

Cite This Study

Sagittal plane lumbar intervertebral motion during seated flexion-extension radiographs of 658 asymptomatic nondegenerated levels

Discussion

Member takes

Implication

Key Points

Cite This Study

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