Abstract
Natural head posture roentgen-cephalograms from 72 healthy young adults from the north of Finland were analysed in order to detect possible correlations between certain morphological features of the first cervical vertebra and head posture in man. Certain variables for head posture and for the morphological characteristics of the upper part of the cervical spine were measured and correlated. The most notable finding was a significant correlation between head posture and the height of the dorsal arch of the atlas. Correlations between head posture and the intervertebral space were also found, but although the antero-posterior dimension of the atlas showed some correlation with the head posture, this was not the case for its lumen. The findings support the notion that the morphology of skeletal structures is regulated by their functional needs.
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