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. 2017 Apr 14;10:17. doi: 10.1186/s13047-017-0198-1

Fig. 1.

Fig. 1

Landmarks for ultrasonography (US) and computed tomography (CT). The 1st metatarsal head (MTH), which includes the sesamoid bones and 5thMTH, were the landmarks for US and CT scans. For US, the probe was located over the line (red line) through both landmarks (yellow marks). For CT, the image with both landmarks was selected