What question did this study set out to answer?

To measure normal three-dimensional intervertebral motion, including primary flexion-extension and secondary coupled movements, in the erect lumbar spine.

April 1, 1984Spine

Three-Dimensional X-ray Analysis of Normal Movement in the Lumbar Spine

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Authors

MPMark J. PearcyMater Health Services IPIan PortekUNSW Sydney JSJANIS SHEPHERDNuffield Orthopaedic Centre

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Implication

Kinematic imaging study demonstrates lumbar intervertebral ranges and coupled motion patterns in asymptomatic volunteers, suggesting thresholds for identifying abnormal spinal kinematics.

Key Points

To measure normal three-dimensional intervertebral motion, including primary flexion-extension and secondary coupled movements, in the erect lumbar spine.
Evaluated upright lumbar spine kinematics in a sample of asymptomatic volunteers.
Used biplanar radiography to capture three-dimensional movements during flexion and extension, including coupled lateral bending and axial rotation.
Each lumbar intervertebral joint exhibited a total flexion and extension range of approximately 14 degrees, with lower spinal levels demonstrating slightly greater movement than upper levels.
Most intervertebral segments moved more in flexion than in extension from an upright posture, whereas the L5/S1 joint exhibited no uniform pattern between flexion and extension.
Coupled lateral and axial movements of 4 degrees or greater during flexion and 3 degrees or greater during extension were established as abnormal thresholds.

Cite This Study

Pearcy et al. (1984) studied this question.

synapsesocial.com/papers/6a1d16cc750575be8d2f2e57 https://doi.org/10.1097/00007632-198404000-00013

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Implication

Kinematic imaging study demonstrates lumbar intervertebral ranges and coupled motion patterns in asymptomatic volunteers, suggesting thresholds for identifying abnormal spinal kinematics.

Three-Dimensional X-ray Analysis of Normal Movement in the Lumbar Spine

Discussion

Member takes

Implication

Key Points

Cite This Study

Three-Dimensional X-ray Analysis of Normal Movement in the Lumbar Spine

Discussion

Member takes

Implication

Key Points

Cite This Study

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