An electronic muscle pump includes an ankle position sensor which provides an initiation signal when a patient's foot is mal-positioned relative to the leg. A controller has a sequencer and an exercise mode selector switch. The exercise mode selector switch closes a signal path between the ankle position sensor and the sequencer in the off position and opens the signal path in the on position. The sequencer is switched from an off condition to an on condition when the initiation signal is received for a predetermined period of time and is repetitively switched between the on and off conditions a predetermined number of times when the exercise mode selector switch is in the on position. A functional electrical stimulator provides a stimulation current to one or more muscles, via electrodes, when the sequencer is in the on condition.