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MOVEMENTS OF THE LUMBAR SPINAL COLUMN



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Abstract

1. Previous studies of the movements of the lumbar spine are criticised in the light of new observations from radiograph tracings. It is shown that, contrary to recent teaching, the lumbar spine is a very mobile part of the vertebral column.

2. The movement of the lumbar spine is analysed. It is shown that the lower vertebrae have the most movement, and that the range gradually becomes less in the upper lumbar spine.

3. This movement may be roughly correlated with the incidence of spurs arising from the anterior margin of the vertebral bodies.

4. These spurs are shown to arise in the anterior longitudinal ligament; they are probably caused by intermittent pressure from the intervertebral disc lying behind the ligament.

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