Fig. 2From: Validity and reliability of smartphone applications for measurement of hip rotation, compared with three‐dimensional motion analysisScatter plot of passive hip rotation angles measured by three-dimensional motion analysis and the smartphone applications. Each data point is the average of the rotation angle of the two measurements in different positions: a sitting hip internal rotation; b sitting hip external rotation; c prone hip internal rotation; d prone hip external rotation; e supine hip internal rotation; and f supine hip external rotationBack to article page