Early detection and proper management of adult degenerative scoliosis (ADS) are important for health promotion. This study aims to develop an ADS screening tool from markerless digital photography and verify its reliability. The study included 17 participants. Outer canthus-horizontal angle (OHA) and trapezius-horizontal angle (THA) were calculated from the image of the upper body of the subject in a coronal plane using ImageJ. The Cobb angle was measured to investigate the correlation between OHA and THA. The intraclass correlation coefficient was analyzed to verify the reliability using the values of skilled and unskilled physiotherapists. The study results demonstrated an excellent correlation between THA and Cobb angle. THA also had an almost perfect intra-and interrater reliability. Because scoliosis is characterized by shoulder imbalance and THA is an index that reflects shoulder imbalance, the correlation with Cobb angle was excellent. THA is a scoliosis screening tool that can be used not only in hospitals but also in various places because even unskilled physiotherapists can measure highly reliable values.

No abstract