Fig. 2.

Percentages of improvement on the dystonia rating scale at 1 year and 2 years after deep brain stimulation (DBS). (A) When the percentages of improvement relative to the preoperative score were estimated on the dystonia movement scale, cerebral palsy (CP) patients showed an improvement in dystonia movement after 1 year following DBS, but the improvement (%) rather decreased after 2 years following DBS, whereas patients with primary dystonia showed improvement in dystonia symptoms up to 2 years following DBS. Consequently, patients with primary dystonia showed a significant improvement at 1 year and 2 years following DBS, compared with CP patients (p<0.05). (B) When the percentages of improvement (%) were estimated on the disability scale, patients with primary dystonia showed an improvement in disability at 1 year after DBS and improved further at 2 years following DBS. However, CP patients with dystonia did not show any improvement in disability after DBS treatment, resulting in a significant difference between two groups at 2 years following DBS (p<0.05). ^*p<0.05.