Fig. 5From: Is vertebral rotation correction maintained after thoracoscopic anterior scoliosis surgery? A low-dose computed tomography studyAn example of anatomically impossible values of vertebral rotation given by the rotation symmetry program. This irregularly shaped outline (b) of a vertebral endplate (a) is more likely rotated at 100.3° than 45.4° or 142.1° (c vertical red lines)Back to article page