Letter to the editor regarding "Two-year results of a double-blind multicenter randomized controlled non-inferiority trial of polyetheretherketone (PEEK) versus silicon nitride spinal fusion cages in patients with symptomatic degenerative lumbar disc disorders"

J Spine Surg. 2021 Jun;7(2):249-251. doi: 10.21037/jss-21-6.

Roel F M R Kersten^{1

2}, F Cumhur Öner², Mark P Arts³, Marian Mitroiu⁴, Kit C B Roes⁵, Arthur de Gast¹, Steven M van Gaalen^{1

6}

¹ Clinical Orthopedic Research Center - midden Nederland (CORC-mN), Department of Orthopedics, Diakonessenhuis Utrecht/Zeist, The Netherlands.
² Department of Orthopedics, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.
³ Department of Neurosurgery, Haaglanden Medical Center, The Hague, The Netherlands.
⁴ Department of Biostatistics and Research Support, Clinical Trial Methodology, Julius Centre for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.
⁵ Department of Health Evidence, Section Biostatistics, Radboud University Medical Center, Radboud University, Nijmegen, The Netherlands.
⁶ Spinecenter.Amsterdam, Orthopedics, Acibadem International Medical Center, Amsterdam, The Netherlands.

No abstract available

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