Ankle dorsiflexion is a fundamental component for lower limb functionality and the quality of life of an individual that involves the coordinated action between several muscles and nerves. This movement can be affected in patients with various neurological pathologies of both central and peripheral nervous systems, causing alterations in sensory and/or motor function and whose physical impact can vary according to the severity, location, and extent of each patient's neurological injury. This study investigates the effect on selective ankle dorsiflexion and tibialis anterior muscle activation during the transition from sitting to standing in patients with various neurological conditions that have resulted in a loss of the described function, through an intervention protocol combining the application of a functional electrical stimulation (FES) device and invasive electrical stimulation on tibialis anterior musculature in an echo-guided manner.