Author: Wong, Wai-ning
Title: Lumbar spinal motion analysis
Degree: M.Phil.
Year: 2002
Subject: Hong Kong Polytechnic University -- Dissertations
Lumbar vertebrae -- Movements
Lumbar vertebrae -- Pathophysiology
Department: Department of Rehabilitation Sciences
Pages: 113 leaves : ill. (some col.) ; 30 cm
Language: English
Abstract: Study Design Dynamic lumbar flexion-extension motions were assessed by an electro-goniometer and a videofluoroscopy unit is simultaneously in vivo. Objectives Spinal "instability" is a common clinical condition but difficult to diagnose. We aimed to develop and validate a new method for the assessment of lumbar spinal motion. Summary of backgrounds Data Spinal instability has been suggested to involve a characteristic change in the relationship between vertebrae during motion. Assessment of lumbar "instability" using functional radiographs is controversial. Information regarding dynamic spinal kinematics in vivo is limited. Methods A lumbar spinal motion analysis system was developed and the reliability of that was assessed. One hundred healthy volunteers were recruited. Simultaneous total flexion range of motion and segmental motion of the lumbar spine was assessed. Lumbar images were captured in 10o intervals during flexion/extension. Intervertebral flexion/extension of each vertebral level was calculated. Results In flexion, the lumbar vertebrae flexed with a descending order from L1 to L5 throughout the motion. Conversely, the concavity of lumbar lordosis increased steadily in extension. A linear-liked motion pattern was found in different genders and age groups in various vertebral levels. No statistically significant difference in the pattern of motion was found between genders. However, statistically significant increase in the slope of IVFE curve was found in age group 51 or above. Conclusions Our results show that the newly developed method is reliable. It may have a potential value in the evaluation of spinal "instability" in clinical practice. Development of a data profile of lumbar spinal motion in the general population is important. This is because once the profile is established, comparison of pathological spinal motion disorder is possible. A precise clinical diagnosis of spinal motion disorder, such s spinal "instability" can be made. As a result, effective treatment may be then introduced. Therefore, studies in comparing patient profiles are suggested in the future.
Rights: All rights reserved
Access: restricted access

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