INTRODUCTION
Parkinson’s disease, gait disturbances, PD, axial motor symptoms
DISEASE PROGRESSION
Parkinson’s disease (PD) is generally well-managed by dopamine replacement therapy and/or deep brain stimulation (DBS) of the subthalamic nucleus (STN); however, axial motor symptoms can emerge with disease progression, including postural instability and gait disturbances. These features can result in falls and diminished quality of life, and are often refractory to both dopamine replacement therapy and DBS [