Cost and Health Outcomes Patterns in Patients Treated With Spinal Cord Stimulation Following Spine Surgery-A Register-Based Study.

Objective: Spinal cord stimulation (SCS), a minimally invasive treatment option for long-term neuropathic pain, has been shown to be effective in patients with persisting neuropathic pain after spine surgery. However, little is known about the long-term cost and quality-of-life (QoL) patterns in SCS-treated patients. The aim is to describe the use of SCS, costs, pre-spine-surgery and post-spine-surgery QoL, and reported pain intensity, in patients who have undergone spine surgery and subsequent SCS implantation. The results will be related to outcome and cost in spine surgery patients in general.

Materials And Methods: A research database comprised from six Swedish national and regional registers, and the spine surgery quality-of-care register Swespine was utilized. Two cohorts were identified: all patients who had spine surgery (N = 73,765) and patients who had spine surgery and subsequent SCS implantation (N = 239). Costs were analyzed before and after spine surgery for both cohorts, as well as before and after SCS implantation for the second cohort. QoL was explored by estimating patient-reported outcome measures such as pain intensity, Oswestry Disability Index, and EuroQol-5Dimensions from spine surgery up to five years post-spine surgery.

Results: In spine surgery patients, mean QoL and pain intensity levels improved following surgery. Patients subsequently treated with SCS had lower reported QoL and higher costs before the initial spine surgery, and spine surgery did not lead to any substantial improvements, however, costs decreased following SCS implantation in these patients.