Evaluation of Objective Outcomes With the Use of an Activity Tracker During the Trial Period of Spinal Cord Stimulation

For this study the investigators will conduct five-day trial periods for spinal cord
stimulator (SCS) effectiveness—once a patient is deemed to be a possible SCS candidate, the
trial leads are implanted and they are asked to return to clinic in five days to evaluate
the effectiveness of the trial. The primary outcome for this study will be a comparison of
daily energy expenditure (EE), in units of kcal/day, prior to and after the trial
implantation of the SCS leads and external pulse generator. Patients will wear the
accelerometer device twenty-four hours a day for five days prior to the trial lead
implantation to obtain baseline values, have the trial leads implanted in the procedure
clinic, then continue to wear the accelerometer for another five days. Baseline and post-SCS
energy expenditure values will be compared. The secondary outcomes for this study will be
steps taken, hours of sleep, and Oswestry Disability Index (ODI, as described in appendix 1)
during the pre and post trial implantation periods. SCS itself is not a research procedure
in this study, rather it is part of routine medical care for patients who would benefit from
the procedure.