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. 2020 Aug 10;15:312. doi: 10.1186/s13018-020-01818-z

Fig. 1.

Fig. 1

The center-edge angles. Photograph of the 3D template software (Zed Hip) to measure a preoperative lateral (6.0°, lower panel) and anterior (51.5°, upper panel) center-edge angles, and b coronal view through the femoral head center creating the sagittal plane through the medial one fourth of the femoral head. d = 1/4 × femoral head diameter (lower panel). Measurement of anterior center-edge angle on sagittal view through the medial one fourth of the femoral head (61.7°, upper panel)