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Original Article
Korean J Spine 2009;6(3): 138-143.
15
Clinical Results from Subsidence and Loss of Lordosis after Anterior Cervical Discectomy and Fusion.
Soon Uk Jeon, Kyung Bum Park, Ki Jeong Kim, Sang Ki Jung, Hyun Jib Kim
1Department of Neurosurgery, Gyeongsang National University, School of Medicine, Jinju, Korea. kongs70@hanmail.net
2Department of Neurosurgery, Seoul National University, College of Medicine, Seoul, Korea.
Abstract
OBJECT: The aim of this study is to analyze the statistical significance between the clinical result and subsidence and lordosis loss after anterior cervical discectomy and interbody fusion operation for degenerative cervical disc diseases.
METHODS
From January 2004 to December 2006, retrospective study of 82 patients with symptomatic degenerative cervical disc disease who underwent anterior cervical discectomy and interbody fusion using the PEEK SolisTM cage and the carbon composite Osta-PekTM cage with autologous bone graft was done. Mean follow-up period was 13.2 months. Clinical results were assessed by bone fusion, subsidence, segmental lordosis loss and Odom's criteria.
RESULTS
Of the 82 patients, single level fusion was accomplished in 67 patients and two-level fusion in 15 patients. Total accomplished fusion level was 97: C3/4 in 9 levels, C4/5 in 29 levels, C5/6 in 37 levels, C6/7 in 21 levels, C7/T1 in 1 level. 9 patients fit into complete resolved, 59 improved and 14 not changed, thus the success rate in clinical outcome was 82.9%. Bone fusion was successfully confirmed in the total of 82 patients. The height of disc space was decreased to 2.13+/-2.16mm: 2.64+/-1.81mm in the Osta-PekTM cage, 2.44+/-1.36mm in the PEEK SolisTM cage. The Osta-PekTM cage provided higher subsidence tendency than the PEEK SolisTM cage in our study. However, there was no statistical significance between the two cage groups. The subsidence and lordosis loss showed poor clinical outcome, but there was no statistical significance.
CONCLUSIONS
There were no significant differences between the Osta-PekTM cage and PEEK SolisTM cage on clinical outco mes. Both cages showed low subsidences and lordosis loss with good fusion rate and clinical outcome.
Keywords: Anterior Cervical Discectomy and Fusion;Subsidence;Loss of Lordosis
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