['Prior research on the efficacy of vertebroplasty has focused primarily on subjective, patient-reported outcomes.', 'To apply an armband activity monitor (SenseWear by BodyMedia Inc, USA) to patients presenting for consideration for vertebroplasty and to determine the correlation between patient-reported outcomes and quantitative activity metrics at baseline and 30\u2005days after presentation.', 'Nineteen patients were enrolled (15 receiving vertebroplasty, 4 not receiving vertebroplasty). Patients reported their average pain over the past 24\u2005hours and completed the Roland-Morris disability questionnaire at baseline and 30\u2005days. Patients wore the SenseWear Armband activity monitor for a median of 4\u2005days at baseline and at the 30-day time period to assess steps, metabolic equivalents expended, sedentary activity time, moderate activity time, sleep efficiency, and total sleep time. Pain and disability scores were correlated with activity monitor metrics using linear regression analysis.', 'Changes in reported average pain in the past 24\u2005hours and disability scores were not significantly different between vertebroplasty and non-vertebroplasty groups (p>0.05). Changes in activity monitor data were not significantly different between the vertebroplasty and non-vertebroplasty groups (p>0.05). None of the correlations between the reported pain or disability scores and the activity monitor data were significant.'] Do armband activity monitor data correlate with reported pain scores in patients receiving vertebroplasty?