title: [Anterior cervical diskectomy and interbody arthrodesis using Cloward technique: retrospective study of complications and radiological results of 167 cases].
abstract: METHODS
  We performed a retrospective analysis of complications and radiological results in 167 patients surgically treated, for discal or spondylotic disease of the cervical spine, with Cloward procedure. Using uni and multivariate analysis, we tried to identify risk factors that might be correlated with surgical complications or radiological results.
  
  
  RESULTS
  Surgical treatment was indicated for cervical radiculopathy in 68% of the patients and for myelopathy or radiculomyelopathy in the remaining 32%. The pathologic disease responsible of the symptomatology was soft disk herniation in 59% of the cases and spondylotic changes in 41%. The patients that underwent surgery because of myelopathy were one decade older, had a longer symptomatic period and presented multi-segmentary spondylotic disease with higher frequency than patients affected of radiculopathy. The most common segments operated were CS-C6 (44.3%) and C6-C7 (30.5%). Surgical mortality was 0.6% and morbidity 29.3%. Most of the complications were transient, although 4.8% of the patients developed permanent neurological deterioration.
  
  
  CONCLUSIONS
  Complications were most commonly seen in the group of the patients undergoing surgery because of long-lasting myelopathy with multi-segmentary spondylotic disease, in those with vascular risk factors and in those operated of more than one segment. Surgeon anatomic knowledge and experience are critical for diminishing such complications. Non-union rate was 9.6%, and another 9.6% of the patients developed post-surgical kyphosis. Both factors correlated with the need of re-operation.
mesh_terms: D000328:Adult; D000368:Aged; D001174:Arthrodesis / Q000009:adverse effects / Q000379:methods*; D002574:Cervical Vertebrae / Q000000981:diagnostic imaging / Q000601:surgery*; D017586:Diskectomy / Q000009:adverse effects / Q000379:methods*; D005260:Female; D006732:Horner Syndrome / Q000209:etiology; D006801:Humans; D007431:Intraoperative Complications / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000453:epidemiology; D011843:Radiculopathy / Q000209:etiology; D012189:Retrospective Studies; D012307:Risk Factors; D013118:Spinal Cord Diseases / Q000209:etiology; D013166:Spondylitis / Q000000981:diagnostic imaging / Q000601:surgery*; D014057:Tomography, X-Ray Computed
vernacular_title: Discectomía cervical y artrodesis intersomática mediante técnica de Cloward: análisis retrospectivo de las complicaciones y los resultados radiológicos en 167 casos.