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Significant relationship between local angle at fused segments and C2-7 angle: Average duration of longer than 20 years after anterior cervical discectomy and fusion.
MedLine Citation:
PMID:  23125490     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: The authors have focused their attention to the radiological durability of cervical sagittal alignment after anterior cervical discectomy and fusion (ACDF) using autologous bone grafting.
MATERIALS AND METHODS: Among the patients who underwent ACDF with trans-unco-discal (TUD) approach between 1976 and 1997, 22 patients (16 males and 6 females) made return visits for a clinical evaluation. Patients with trauma or previously treated by anterior cervical fusion or by posterior decompression were excluded from the present study. Clinical evaluation included adjacent segment degeneration (ASD), osseous fusion, local angle at the fused segments and C2-7 angle of cervical spine.
RESULTS: The duration after ACDF ranged from 13 to 34 years with an average of 21.3 ± 7.0 years. A single level fusion was done on 8 patients, 2 levels on 11 patients, 3 levels on 2 patients, and 4 levels on 1 patient. Imaging studies indicated that 12 of the 22 patients (54.5%) were graded as having symptomatic ASD. Osseous bony fusion at ACDF was recognized in all cases. None of the patients demonstrated kyphotic malalignment of the cervical spine. Average degrees of local angle at the fused segments and the C2-7 angle were 7.06 and 17.6, respectively. Statistical analysis indicated a significant relationship between the local at the fused segments and C2-7 angles.
CONCLUSIONS: Sagittal alignment of the cervical spine was durable long after ACDF when the local angle at the fused segments was well stabilized.
Authors:
T Nagata; T Takami; T Yamagata; T Uda; K Naito; K Ohata
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of craniovertebral junction & spine     Volume:  2     ISSN:  0976-9285     ISO Abbreviation:  J Craniovertebr Junction Spine     Publication Date:  2011 Jul 
Date Detail:
Created Date:  2012-11-05     Completed Date:  2012-11-06     Revised Date:  2014-09-11    
Medline Journal Info:
Nlm Unique ID:  101536746     Medline TA:  J Craniovertebr Junction Spine     Country:  India    
Other Details:
Languages:  eng     Pagination:  62-6     Citation Subset:  -    
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