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Fig. 3 | BMC Surgery

Fig. 3

From: Measurement of the femoral neck anteversion angle using a three-dimensional reconstruction in the fixed coordinate system based on the basal anterior cortex of the femoral neck: an observational study

Fig. 3

Construction of the safety target area and the coordinate system. (a) the first layer of the femoral neck image; (b) the second layer of the femoral neck image; (c) the ratio remained unchanged, the first and second layers of the images were overlaid in situ, and the red part was the public area; (d) construction of the coordinate system by taking AB at the bottom edge of the triangle safety area to be the parallel line of the Y-axis and drawing the circumscribed rectangular ABCD with its center (O) as the origin, then constructing the rectangular coordinate system

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BMC Surgery

ISSN: 1471-2482

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