Cervico-thoracic Ratio
The cervico-thoracic ratio (CTR) is a method developed by Norlander et al. for measuring segmental mobility in the spine between the C7 vertebra and the T5 vertebra in flexion. The method has been developed to fulfil clinical demands of quick examinations. With this method, the observer can see if there is an increased respectively decreased mobility in a specific motion segment. The CTR technique measures both segmental and total skin distractions. It compares the degree of segmental flexion mobility by establishing a ratio between segmental and total skin distraction. First the skin distraction in cm is measured using a special transparent measuring strip and a pen, the absolute mobility. Then absolute values are calculated in a computer program, CTR graph 5.2. Relative values are shown in percent. Each person has totally 100% mobility in the area C7-T5. The relative values show how many percent of the total mobility that is related to in each motion segment. After each measure, ...
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