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. 2021 Mar 19;21(6):2150. doi: 10.3390/s21062150

Figure 2.

Figure 2

The four main steps of the calibration process; (a) marking and connecting anatomic landmarks, (b) putting on the instrumented knee brace, (c) attachment and alignment of the additional calibration goniometer in prone position, (d) passive knee movement in prone position by the investigator.