Analysis on Muscle Forces of Extrinsic Finger Flexors and Extensors in Flexor Movements with sEMG and Ultrasound

Figure 2

Measurement process of MTJ displacement. (a) The initial position; (b) the rest position; (c) the fingertip force for action 3 was 10.7 N and the resistance was 0.7 N; (d) ultrasonic localization of MTJ for FDS and FDP.