• World Neurosurg · Dec 2022

    Real World Evidence for Restorative Neurostimulation in Chronic Low Back Pain- a Consecutive Cohort Study.

    • Ardeshir Ardeshiri, Christopher Shaffrey, Klaus-Peter Stein, and Ibrahim Erol Sandalcioglu.
    • Department for Trauma Surgery and Orthopaedics, Klinikum Itzehoe, Germany. Electronic address: aardeshiri@aol.com.
    • World Neurosurg. 2022 Dec 1; 168: e253e259e253-e259.

    BackgroundNeuromuscular instability of the lumbar spine resulting from impaired motor control and degeneration of the multifidus muscle is a known root cause of refractory chronic low back pain (LBP). An implantable neurostimulation system that aims to restore multifidus motor control by stimulating the L2 medial branch of the dorsal ramus thereby relieving pain and reducing disability has demonstrated clinically significant benefits in the clinical trial setting. The 1-year results of a single-site real-world cohort study are presented.MethodsThis study recruited 44 consecutive patients with refractory, predominantly nociceptive axial chronic LBP, evidence of multifidus dysfunction, and no surgical indications or history of surgical intervention for chronic LBP. Each patient was implanted with a neurostimulation device. Pain (numeric rating scale), disability (Oswestry Disability Index), and quality of life (5-level EuroQol 5-Dimension) outcomes were collected at baseline and 3, 6, and 12 months after activation.ResultsStatistically significant improvements in pain, disability, and quality of life from baseline were seen at all assessment time points. At 12 months after activation, mean ± standard error of the mean numeric rating scale score was reduced from 7.6 ± 0.2 to 3.9 ± 0.4 (P < 0.001), Oswestry Disability Index score was reduced from 43.0 ± 2.8 to 25.8 ± 3.9 (P < 0.001), and 5-level EuroQol 5-Dimension index improved from 0.504 ± 0.034 to 0.755 ± 0.039 (P < 0.001). No lead migrations were observed. One patient required revision due to lead fracture.ConclusionsRestorative neurostimulation is a new treatment option for well-selected patients with refractory chronic LBP. Clinically meaningful improvements in pain, disability, and quality of life demonstrated in routine clinical practice are consistent with published results of controlled trials.Copyright © 2022 Elsevier Inc. All rights reserved.

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