Abstract
Purpose of the study
To establish the relation between the magnitude of the deformity in scoliosis, measured by cobb angle on radiograph & Volumetric asymmetry with the ISIS2 surface topography, and the patient perception of self image and mental health, measured with SRS-22 scores.
Methodology
A total of 89 untreated patients with scoliosis were included in the study. They had clinical assessment, cobb angle measurement of radiograph and surface topography performed on the same day along with SRS-22 questionnaires. The cobb angle was measured by single surgeon using a digital PACS system, who was unaware of the volumetric asymmetry score. Volumetric asymmetry was measured by ISIS2 surface topography performed by a research nurse who was unaware of the cobb angle. Volumetric asymmetry was calculated using standard ISIS2 software. A comparison correlation of SRS scores for function, pain, self image and mental health against cobb angle and volumetric asymmetry was undertaken by clinical scientist. Scores for patient satisfaction to treatment was excluded as these were untreated patients. Statistical analysis was performed using cor. test on software R
Results
Correlation of both cobb angle and volumetric asymmetry for function and pain were statistically not significant (p value > 0.05).
However for self image, correlation was statistically significant with cobb angle (p value-0.0033) and volumetric asymmetry (p value-0.00031), but the correlation was not high. Cobb angle contributed only around 10% to self image, whilst volumetric asymmetry contributed only 14%.
Similarly for mental health, correlation was statistically significant with cobb angle (p value-0.0194) and volumetric asymmetry (p value-0.00559), but the correlation was not high. Cobb angle contributed only around 6.2% to mental health, whilst volumetric asymmetry contributed only 8.6%.
Conclusion
Volumetric asymmetry correlates better to both mental health and self image as compared to cobb angle, but the correlation is still poor.
Neither cobb angle or volumetric asymmetry can be used to predict patients self image or mental health.
We are pursuing this study further to look at other parameters which may affect SRS-22 such as gender, age, type of deformity, waist asymmetry and shoulder asymmetry.
Ethics approval: None
Interest Statement: None
