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BioMed Research International
Volume 2017, Article ID 3731983, 9 pages
Clinical Study

Percutaneous Transforaminal Endoscopic Lumbar Interbody Fusion: Clinical and Radiological Results of Mean 46-Month Follow-Up

1Department of Neurological Surgery, Spine Health Wooridul Hospital, Seoul, Republic of Korea
2Department of Orthopaedic Surgery, Spine Health Wooridul Hospital, Seoul, Republic of Korea

Correspondence should be addressed to Junseok Bae; moc.liamg@dmeabsj

Received 8 November 2016; Revised 30 January 2017; Accepted 6 February 2017; Published 27 February 2017

Academic Editor: William B. Rodgers

Copyright © 2017 Sang-Ho Lee et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Background. Spinal fusion has been shown to be the preferred surgical option to reduce pain, recover function, and increase quality of life in the treatment of a variety of lumbar spinal disorders. The main goal of the present study is to report our clinical experience and results of percutaneous transforaminal endoscopic lumbar interbody fusion (PELIF) applications using the expandable spacer in a single institution. Methods. We performed a retrospective review of 18 patients with >12-month follow-up who had been operated on PELIF using expandable spacer from 2001 to 2007. Their clinical and radiological data were collected and analyzed. Results. The mean follow-up period was 46 months. The mean DH before the surgery was 8.3 mm which improved to 11.4 mm at the early postoperative period and regressed to 9.3 mm at the last follow-up visit. The VAS-B, VAS-L, and ODI scores at the last follow-up showed a 54%, 72%, and 69% improvement from the preoperative period, respectively. Conclusions. The presented PELIF technique with the expandable spacer seems to be a promising surgical technique for the treatment of a variety of lumbar spinal disorders. Conversely, radiological results including disc space subsidence make the stand-alone application of the expandable spacer debatable.