Parkinson's Disease (PD) is a condition that affects movement, and many people with PD experience Freezing of Gait (FOG), a severe movement problem where they suddenly can't move their feet properly while walking. This study looks at using a treatment called Spinal Cord Stimulation (SCS) to help with FOG. SCS involves using electrical signals to stimulate the spinal cord through small devices placed near it. The study is randomized (people are randomly chosen for different parts of the study), double-blind (neither patients nor doctors know who is getting the real treatment or a fake one), and cross-over (participants try different treatments one after the other).

• Duration: The initial trial lasts 3 weeks. Successful participants may continue in a long-term phase.
• Visits: Participants will perform different walking tasks at home and may need to visit the hospital for assessments.
• Risks: Involves surgery to implant the device and possible side effects from stimulation.