Figure 8. Further advances in the cutting process.

The whole length of the instrument is seen on the sonography screen. Note the cutting part of the instrument, represented by a straight hyperechoic line on the sonographic image (arrow), thanks to its specific flange. Note the sonography aspect of the spiral groove (arrow heads) that allows you to visualize the axial rotation of the instrument. To better understand the sonographic view, the image on the left and bottom is repeated right at the top with a legend. (FDS: Flexor digitorum superficialis; FDP: Flexor digitorum profundus). Note that the sonography probe is intentionally not shown; better observe the cutting instrument underneath the skin. The probe is used throughout the procedure.

Image created by F Moungondo.