A Systematic Review of All Smart Phone Applications Specifically Aimed for Use as a Scoliosis Screening Tool

The scoliometer is an inclinometer commonly used in scoliosis screening. The device is used during an Adam's forward bend test, in which a patient bends forward at the hips to measure deformity of the rib cage and spinal column. If a sufficient angle of rotation is measured, then the appropriate referrals and x-rays can be made and taken. This ubiquitous screening tool allows for a quick and simple scoliosis screening and is a mainstay of scoliosis management. With the advent and rapid improvement of smart phone technology, many scoliometer applications have become readily accessible. Our study was designed to test the accuracy, precision, and calibration of several scoliometer applications available on both the Apple iPhone and Samsung Galaxy platforms. Application cost was also analyzed to assess the plausibility of using a smartphone scoliometer application in place of a traditional scoliometer in a traditional scoliosis screening. Our data show that available smart phone applications can be used effectively and that, in a controlled environment, some applications performed better than a traditional scoliometer. Application price was not correlated with effectiveness; the cost-free application performed better than the for-purchase application.