Fig. 3From: The AMP-Foot 3, new generation propulsive prosthetic feet with explosive motion characteristics: design and validationThe AMP-Foot 3 prototype simulated angle-torque characteristic compared to the reference data [24] and the AMP-Foot 2 simulated data. The shaded area represents the extra energy that can be stored thanks to the use of locking mechanism 1 compared to the AMP-Foot 2 prototype. This area represents approximately \(5\,J\) Back to article page