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Evaluation of arthrodesis and cervical alignment in the surgical results of cervical discectomy using polymethylmetacrylate

DOI: 10.1590/S0004-282X2009000500017

Keywords: discectomy, polymethylmetacrilate (pmma), arthrodesis, fusion, cervical alignment.

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background and objectives: surgical treatment of cervical radiculopathy with or without myelopathy is a controversy issue, although anterior discectomy is the most common form of treatment. method: we present the evaluation of the arthrodesis' rate and cervical alignment in 48 patients with cervical degenerative disease (cdd) submitted to anterior cervical discectomy with interposition of polymethylmetacrylate (pmma). odom and nürick scales were used to evaluation of functional status before and after surgery. cervical spine x-rays were used to access arthrodesis and alignment, at least 2 years after the procedure. results: excellent and good results (odom i and ii) were obtained in 91% of the patients with radiculopathy and in 69% of those with myelopathy. using the chi square test of independence (1% of significance), there was no association between excellent and good clinical results with the presence of arthrodesis verified in cervical x-rays. the presence of cervical alignment had association with good results, whereas the misalignment was associated with unfavorable outcomes. two patients died: one cervical hematoma and other from graft migration with cord compression. conclusions: cervical alignment was more important than fusion to achieve good surgical results in cdd.


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