Document Detail

Experience with a Modular PEEK System for Cervical Vertebral Body Replacement.
MedLine Citation:
PMID:  25099975     Owner:  NLM     Status:  Publisher    
STUDY DESIGN:: A retrospective case series.
SUMMARY OF BACKGROUND DATA:: The authors present their experience with the ATHLET vertebral body replacement (VBR) system in combination with the TOSCA plating system for the treatment of cervical spondylotic myelopathy.
METHODS:: Data obtained from 20 cases were reviewed. Corpectomy and VBR with the ATHLET system was performed in all cases. Patients underwent pre- and postoperative assessment involving the JOA Score, Odom´s criteria and radiographic studies to determine the position of the implant as well as cervical lordosis. The mean follow-up period was 20 (16 to 28) months.
RESULTS:: Implantation of the ATHLET vertebral body replacement itself was uncomplicated in all cases. The adjustment of the implants´ height could be done two-millimeterwise. With increasing height of the implant the angle of lordosis increases comparable to physiological conditions. The authors performed 13 one-level and 7 two-level corpectomies, from the latter group there two revision cases (10%) with implant dislocation. Four cases (20%) of secondary subsidence of the implant were observed radiographs 12 months postoperatively; in all cases treatment remained conservatively. Ten patients (50%) had excellent, four (30%) good, two (10%) satisfactory, and two (10%) poor outcome according to Odom´s criteria. The average improvement of the JOA score was 1.6. In all cases without complications osseous fusion was achieved, 55% of them had an improvement, and 15% of them had no change of the sagittal contour.
CONCLUSIONS:: The ATHLET vertebral body replacement is easy to implant and avoids bone graft site morbidity. Due to a relatively high rate of secondary subsidence of the implant (20%) and secondary dislocation (10%) in combination with a poor to satisfactory outcome according to Odom´s criteria in 20% the authors do not recommend the use of this PEEK implant for cervical VBR.
Stefan Alexander König; Uwe Spetzger
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-8-5
Journal Detail:
Title:  Journal of spinal disorders & techniques     Volume:  -     ISSN:  1539-2465     ISO Abbreviation:  J Spinal Disord Tech     Publication Date:  2014 Aug 
Date Detail:
Created Date:  2014-8-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101140323     Medline TA:  J Spinal Disord Tech     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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