Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Segmental rib index and spinal deformity: aetiological implications

Version 1 : Received: 25 October 2023 / Approved: 26 October 2023 / Online: 26 October 2023 (10:15:51 CEST)

A peer-reviewed article of this Preprint also exists.

Grivas, T.B.; Jevtic, N.; Ljubojevic, D.; Pjanic, S.; Golic, F.; Vasiliadis, E. Segmental Rib Index and Spinal Deformity: Scoliogenic Implications. Healthcare 2023, 11, 3004. Grivas, T.B.; Jevtic, N.; Ljubojevic, D.; Pjanic, S.; Golic, F.; Vasiliadis, E. Segmental Rib Index and Spinal Deformity: Scoliogenic Implications. Healthcare 2023, 11, 3004.

Abstract

The aim of this report is to evaluate the segmental rib index (RI) from T1-T12 spinal level in mild and moderate idiopathic scoliosis (IS) curves of thoracic, thoracolumbar and lumbar type by gender. The relationship of segmental RI to the frontal plane radiological deformity presented as the Cobb angle and to the posterior truncal surface deformity presented as the scoliometric readings of Angle of Trunk Rotation (ATR) in these patients is also assessed. Any statistical significant rela-tionship of these parameters would be very important for biomechanical relations of the rib cage (RC) deformity presented as the rib hump deformity (RHD) and the deformity in the spine and it would thus provide valuable information about scoliogeny. The segmental rib index (RI) is presented in 83 boys and girls with mild and moderate IS. The measurements include the scoliometric readings for truncal asymmetry (TA), the Cobb angle assessment and the segmental RI from T1-T12. The statistical package SPSS 23 was used for statistical analysis. The TA is documented and the Cobb angle is presented by gender and curve type. The segmental RI of thoracic, thoracolumbar and lumbar curves are presented for the first time. The correlations of the segmental RI to surface deformity presented as the rib hump deformity (RHD) in all IS patients and particularly in thoracic curves, to Cobb angle by gender and age and the comparison of the segmental RI index of asymmetric but not scoliotic children to the scoliotic peers by curve (in thoracic, thoracolumbar, lumbar curves) in boys and girls are presented. The findings emphasize the significant protagonistic role of the thoracic asymmetry in relation to the spinal deformity mainly in girls for the thoracic and in boys for the thoracolumbar curves. The cut-off point of age of the examined scoliotics is 14 years, that is when the RI shows stronger correlation with the spinal deformity, namely when the thoracic deformity is decisively effective to the developing thoracic spinal deformity, in terms of Cobb angle. In summary, the results of this study provide aetiological implications for IS, as far as the role of thorax is con-cerned.

Keywords

Idiopathic scoliosis; double rib contour sign; rib index; rib cage; Cobb angle; segmental rib index; rib hump deformity; Adams test; lateral standing radiographs; angle of trunk rotation; scoliometer

Subject

Public Health and Healthcare, Other

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