V02 Poster location 002 Pallidal deep brain stimulation in dystonia restores physiological feeding and toileting and allows to reduce rate of ITB

were implanted into the Globus Pallidus interna bilaterally with the aid of an MRI-directed stereotactic technique. At one year, Dystonia was assessed using the Burke Fahn Marsden dystonia rating scale in addition to video recordings. Subjective pain scores were obtained using the Visual Analog Scale (VAS) and the Neuropathic Pain Scale (NPS); QOL was measured using the SF-36 health survey. Results: Patient 1 had a 58.9% improvement in the severity of her dystonia; her disability score improved by 58.6% and she experienced a 48% overall improvement in her SF-36 score. Patient 2 had a 77.7% reduction in her dystonia severity; a 53.3% reduction in her disability and a 20% improvement in her SF-36 score. Interestingly, this patient’s DBS battery ran out at one year and this proved to be a useful blinded tool for assessment, it resulted in her dystonia reverting to presurgery severity. Conclusions: Fixed dystonia alone and in association with CRPS is an extremely challenging condition to treat and current therapeutic modalities are sub-optimal. Although DBS has been used widely in primary mobile dystonia, we have demonstrated for the first time the successful use of DBS in complex regional pain syndrome associated with fixed dystonia.