Document Detail

A new zero-profile implant for stand-alone anterior cervical interbody fusion.
MedLine Citation:
PMID:  20882376     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Several studies suggest fusion rates are higher with anterior cervical discectomy and fusion procedures if supplemented with a plate. However, plates may be associated with higher postoperative morbidity and higher rates of dysphagia. This led to the development of a cervical stand-alone cage with integrated fixation for zero-profile segmental stabilization.
QUESTIONS/PURPOSES: We asked whether this new implant would be associated with a low rate of dysphagia and other short-term complications in patients having anterior cervical discectomy and fusion and would be able to achieve solid fusion and maintain postoperative reduction in pain.
METHODS: We prospectively followed 38 patients with radiculopathy/myelopathy undergoing anterior cervical discectomy and fusion using the new implant. Intraoperative parameters, clinical features (Neck Pain Disability Index, visual analog scale score for neck/arm pain, Odom's criteria), and dysphagia scores were recorded. Radiographs were taken to assess implant failure. Thirty-four patients had a minimum 6 months' followup (mean, 8 months; range, 6-11 months).
RESULTS: Three patients at 6 weeks and one patient at 6 months complained about minor dysphagia-related symptoms. There was no hardware failure recordable and all patients had evidence of fusion. Compared to preoperatively, visual analog scale pain score and Neck Pain Disability Index were reduced at 6 weeks' followup without change during further followup.
CONCLUSIONS: The new cervical stand-alone anterior fusion device allows decompression and fusion with low complication rates. The incidence of chronic postoperative dysphagia was infrequent in comparison to published data. Prospective randomized trials with more patients and longer followup are necessary to confirm these observations.
LEVEL OF EVIDENCE: Level IV, therapeutic study. See Guidelines for Authors for a complete description of levels of evidence.
M Scholz; K J Schnake; A Pingel; R Hoffmann; F Kandziora
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Clinical orthopaedics and related research     Volume:  469     ISSN:  1528-1132     ISO Abbreviation:  Clin. Orthop. Relat. Res.     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-02-03     Completed Date:  2011-03-24     Revised Date:  2013-07-03    
Medline Journal Info:
Nlm Unique ID:  0075674     Medline TA:  Clin Orthop Relat Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  666-73     Citation Subset:  AIM; IM    
Center for Spinal Surgery and Neurotraumatology, Berufsgenossenschaftliche Unfallklinik Frankfurt am Main, Friedberger Landstraße 430, 60389, Frankfurt am Main, Germany.
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MeSH Terms
Cervical Vertebrae / surgery*
Decompression, Surgical / instrumentation,  methods
Deglutition Disorders / epidemiology,  etiology
Diskectomy / instrumentation,  methods
Germany / epidemiology
Intervertebral Disc Degeneration / surgery*
Intervertebral Disc Displacement / surgery*
Middle Aged
Postoperative Complications / epidemiology,  etiology
Prospective Studies
Prosthesis Design*
Radiculopathy / surgery
Spinal Cord Compression / surgery
Spinal Fusion / adverse effects,  instrumentation*,  methods
Young Adult

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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