The Changes of Adjacent Segments after Long Segment Posterolateral Fusion: Comparative Study of 3 year versus over the 7 year Follow-up Patients.
10.4055/jkoa.2005.40.1.38
- Author:
Jae Lim CHO
1
;
Sung Wook CHOI
;
Jong Min LEE
;
Ye Soo PARK
Author Information
1. Department of Orthopaedic Surgery, Guri Hospital, Hanyang University College of Medicine, Guri, Korea. hyparkys@hanyang.ac.kr
- Publication Type:Comparative Study ; Original Article
- Keywords:
Long-segment posterolateral fusion;
Adjacent segments;
Segmental lordosis angle
- MeSH:
Animals;
Classification;
Follow-Up Studies*;
Humans;
Lordosis;
Radiography;
Retrospective Studies;
Sclerosis;
Traction;
Vacuum
- From:The Journal of the Korean Orthopaedic Association
2005;40(1):38-43
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To compare the 3 year and over the 7 year results after long-segment posterolateral fusion and to analyze the changes of adjacent segments and the changes according to the segmental lordosis angle of the fusion segments. MATERIALS AND METHODS: A retrospective review was carried out 62 patients of long segment fusion for 7 years follow up and compared that of the 3 year and over the 7 year results. The changes of adjacent segments were evaluated by simple radiography for disc space narrowing, traction spur, endplate sclerosis and vacuum phenomenon.In last follow-up, segmental lordosis angle of fusion level was evaluated by Gelb's criteria and clinical results were analyzed by Katz's classification. RESULTS: In the changes of adjacent segments, disc space narrowing was increased 27.4% to 38.7%, traction spur was 22.6% to 35.5%, endplate sclerosis was 19.4% to 32.2% and vacuum phenomenon was 8.1% to 12.9%. The changes of adjacent segments were observed that from 3.4% to 20.7% in physiologic group and from 33.3% to 90.9% in un-physiologic group. The clinical results showed 83.9% satisfaction and 16.1% un-satisfaction. CONCLUSION: In long-term follow up of long-segment posterolateral fusion, physiologic segmental lordosis angle should be preserved for decrease of changes of adjacent segments in long-segment posterolateral fusion.
