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. 2007 Apr 30;22(2):330–335. doi: 10.3346/jkms.2007.22.2.330

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Copyright © 2007 The Korean Academy of Medical Sciences

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 3 — Radiographs showing the changes of range of motion (ROM) after surgery in the Coflex™ inserted patient. Preoperative lateral X-ray films (A) show the spondylolisthetic instability at L4-5 level. Postoperative flexion and extension images (B) after implantation of Coflex™ do not reveal improvement of spondylolisthesis at L4-5 despite the clinical improvement of low back pain and radiating pain. However, they showed no significant difference of ROM at L3-4, as compared with preoperative images (A). Arrow indicates the degree of spondylolisthesis on flexion.