Objective: To evaluate patient-reported outcomes (PROs) and objective outcomes after baclofen pump surgery. Design: Pre-post intervention study with prospective data collection up to 24±4 weeks. Setting: Spasticity clinic within a large outpatient multiple sclerosis (MS) center. Participants: Ambulatory patients with definite MS and severe spasticity refractory to oral medications. Mean age was 42.6±8.2 years, and 93% were women. Mean disease duration was 14.2±9.1 years, and 69% had progressive MS. Interventions: Surgical implantation of a programmable intrathecal baclofen (ITB) infusion system. Main Outcome Measures: A patient satisfaction and outcomes questionnaire, pain scale, Modified Ashworth Scale, manual muscle testing, Penn Spasm Frequency Scale, and gait tests. Results: There was a statistically significant improvement in total subjective outcome (P=.03) and satisfaction with treatment (P=.04) scores between 1 and 6 months. Clinical parameters did not change significantly. Over time, satisfaction with symptom control decreased, whereas satisfaction with activity level increased. Conclusions: Our results suggest that PROs are a useful complement to traditional measures in evaluating the impact of ITB therapy. The improvement in satisfaction with time may be attributed to patient adjustment, therapy adjustments, and rehabilitative interventions. These findings need to be verified on larger patient populations.