title: Secondary failure after ten years of pallidal neurostimulation  in a patient with advanced Parkinson's disease.
abstract: Deep-brain stimulation of the subthalamic nucleus and internal globus pallidus are both surgical options in advanced Parkinson's disease. The best target is still debated with data suggesting better motor outcome in subthalamic stimulation but higher rates of psychiatric problems. Failure of pallidal stimulation within the first 2 years has been described. Here, we report a patient with good response to pallidal neurostimulation who developed a secondary failure after 10 years of treatment which was successfully reversed by reimplanting the electrodes into the subthalamic nucleus. This case suggests that a controlled comparison of treatment efficacy of pallidal and subthalamic neurostimulation may require a very long follow-up period to yield reliable results.
authors.affiliation: Neurological Rehabilitation Center Godeshoehe, Bonn, Germany. allert@godeshoehe.de
authors.forename: Niels
authors.initials: N
authors.lastname: Allert
authors.forename: Ralph
authors.initials: R
authors.lastname: Lehrke
authors.forename: Volker
authors.initials: V
authors.lastname: Sturm
authors.forename: Jens
authors.initials: J
authors.lastname: Volkmann
mesh_terms: D000328:Adult; D046690:Deep Brain Stimulation / Q000379:methods*; D004567:Electrodes, Implanted; D005917:Globus Pallidus / Q000503:physiopathology; D006801:Humans; D008297:Male; D010300:Parkinson Disease / Q000503:physiopathology / Q000628:therapy*; D012720:Severity of Illness Index; D020531:Subthalamic Nucleus / Q000503:physiopathology; D013997:Time Factors; D016896:Treatment Outcome