Fig. 1From: The association of lumbar curve magnitude and spinal range of motion in adolescent idiopathic scoliosis: a cross-sectional studySagittal plane ROM was measured with the C7-posteriosuperior iliac spine (C7-PSIS) distance (a), finger-to floor measurements, and the modified Schober’s test. Here the changes in C7-PSIS distance were measured in active upright (b), extension (c), and flexion (d) posturesBack to article page