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The tibial tuberosity can affect tibial slope measurements with the midpoint method, especially with the M10 measurement. The left image shows the tibial tuberosity better than the image on the right (at the level of the proximal anteroposterior line for the M10 measurement). This anatomical detail will affect the ability to perform the M10 measurement, as the tibial tuberosity will shift the tibial proximal anatomic axis (white dashed line) more anteriorly.
