Exploring the Effects of Spinal Cord Stimulation in Parkinson's Disease.

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Freezing of gait (FOG) is a devastating motor phenomenon which may occur in patients with Parkinson's Disease (PD) and other neurodegenerative disorders. It is characterized by episodes during which patients cannot generate effective forward stepping movements in the absence of motor deficits. FOG l...

Freezing of gait (FOG) is a devastating motor phenomenon which may occur in patients with Parkinson's Disease (PD) and other neurodegenerative disorders. It is characterized by episodes during which patients cannot generate effective forward stepping movements in the absence of motor deficits. FOG leads to reduced mobility, loss of independence, social embarrassment, and caregiver stress. While most motor features of PD respond robustly to dopaminergic agents and deep brain stimulation (DBS), there are currently no effective treatments for FOG. Indirect evidence from case reports of PD patients undergoing spinal cord stimulation (SCS) for neuropathic pain, has consistently described a positive effect of SCS on FOG. In addition, two recent reports demonstrated that thoracic SCS improved locomotion and FOG in patients with advanced PD. The promising role of SCS for the treatment of FOG in PD has encouraged us to assemble a multi-disciplinary team for the systematic investigation of the motor effects of SCS on FOG, locomotion and other parkinsonian features. The current study integrates minimally invasive SCS and the use of robotic technology to determine objective gait parameters. The investigators propose a pilot study for the implantation of SCS to the spinal cord on PD patients with treatment-refractory FOG, including a longitudinal assessment of motor outcomes.

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