Assessment in adolescent scoliosis
Volume 6 | Issue 1 | Jan – April 2020 | Page 2-6 | Connor J. S. McKee.
Authors : Connor J. S. McKee 
 Royal Victoria Hospital, 274 Grosvenor Rd, Belfast BT12 6BA, Belfast, Northern Ireland.
Address of Correspondence
Dr. Connor J. S. McKee,
Royal Victoria Hospital, 274 Grosvenor Rd, Belfast BT12 6BA, Belfast, Northern Ireland.
Background: Adolescent idiopathic scoliosis is associated with lateral spinal curvature, vertebral rotation and rib cage distortion which disrupts normal, symmetrical thoracic movement leading to restriction of lung expansion and impaired pulmonary function. The effects of scoliosis on lung growth, airway function and exercise capacity are well documented but it is unclear how altered rib positioning affects lung function. This paper compares two different radiological measurements with pulmonary function.
Methods: The study compared two measures of deformity: Cobb angle and average rib-vertebral angle difference with pulmonary functioning. Existing literature describes Cobb angle as a useful indicator of pulmonary dysfunction. However, there are few reports on the use of rib-vertebral angle difference and these are limited to a single measurement taken at the apical vertebrae. This study of 53 patients used an average rib-vertebral angle difference over five vertebral levels. This measure gives a more representative measurement of the scoliotic deformity. This measure was then correlated with the patient’s Cobb angle and pulmonary function.
Results: Using Spearman’s rank correlation coefficient, average rib-vertebral angle difference correlated strongly with Cobb angle (0.83), forced vital capacity (-0.81), forced expiratory volume in 1 second (-0.76), and peak expiratory flow (-0.60).
Conclusions: The study found that measurement of Cobb angle is superior to average rib-vertebral angle difference across five vertebral levels.
Keywords: Idiopathic, scoliosis, RVAD, Cobb, measurement.
Study design: Retrospective correlation of pre-operative pulmonary function tests and radiological measurements
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|How to Cite this Article: McKee C J S Assessment in adolescent | scoliosis | International Journal of
Paediatric Orthopaedics | Jan-April 2020; 6(1):- .
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