Objective To test a new user-modulated control strategy that enables improved control of a
powered knee-ankle prosthesis during sit-to-stand and stand-to-sit movements. Design
Within-subject comparison study. Setting Gait laboratory. Participants Unilateral transfemoral
amputees (N= 7; 4 men, 3 women) capable of community ambulation. Interventions Subjects
performed 10 repetitions of sit-to-stand and stand-to-sit with a powered knee-ankle
prosthesis and with their prescribed passive prosthesis in a randomized order. With the …