Introduction. The problem of instability in the cervical spine in children has been repeatedly discussed in the medical literature and has become the subject of discussion. This is due to a significant increase in the number and recurrence of subluxations in the C1–C2 segment. An assumption is made about the relationship of this pathology with systemic connective tissue dysplasia, but evidence-based studies are required.Aim. To make a statistical analysis of individual somatometric indicators in children with recurrent subluxations of the C1–C2 vertebrae and signs of connective tissue dysplasia.Materials and methods. The analysis of measurements of selected body parameters in pre-pubertal children with acute and recurrent torticollis against the background of systemic connective tissue dysplasia was carried out. The data of 186 children aged 9–11 years in comparative groups for the period 2016–2021 were studied. Modern methods of statistics were used.Results. Dependences were obtained confirming the hypothesis of the relationship between asthenic physique (high height, low weight and chest circumference) and recurrent dislocations in the C1–C2 segmentConclusions. When comparing the average values for two independent samples made up of the indicators of the main group and the comparison group, the conclusion obtained during visual examination and somatometric examination of patients diagnosed with torticollis at admission to the hospital was confirmed: relapses are inherent in children with high growth, low weight, smaller chest circumference and smaller wrist circumference.