The IDIAG M360 (commonly referenced as “Spinal Mouse” and “Medi-Mouse”) is a computer-assisted medical device that quantifies the curvature and mobility of the spinal column by gliding the device manually down the spine. From the posterior surface line, an intelligent recursive algorithm computes information concerning the relative position of the vertebral bodies of the thoracic and lumbar spine, while taking into account the local curvature in both the sagittal and frontal-planes (kyphotic, lordotic and scoliotic). The final result is the accurate segmental localisation of all vertebral bodies as the projection of their midpoints on the superficial contour of the spine.