Modified Smith-Robinson procedure for anterior cervical discectomy and fusion

Spine (Phila Pa 1976). 1992 Oct;17(10 Suppl):S427-30. doi: 10.1097/00007632-199210001-00014.

Abstract

Fifty-one consecutive patients with cervical radiculopathy or spondylosis were treated with single or multilevel anterior discectomy and fusion using a modified Smith-Robinson procedure. There were 33 single-level fusions, 16 two-level fusions, and 2 three-level fusions. The three modifications included: 1) the endplates at the fusion level were completely removed with a high-speed bur to exposed bleeding cancellous bone in parallel planes; 2) the Caspar distractor (Aesculap, Burlingame, CA) was used to increase distraction and improve visualization; 3) the tricortical autologous iliac crest bone graft was placed in reverse position, that is, with the cortical cross-section facing posteriorly, creating a stabilizing strut in the middle column. With an average follow-up of 1 year, the fusion rate was 94% (67 of 71 levels). The single-level fusion rate was 97%, the two-level fusion rate was 94%, and the three-level fusion rate was 83%. Of the four nonunions, only two were symptomatic. Results by clinical examination revealed 36 (71%) excellent, 11 (21%) good, 3 (6%) satisfactory, and 1 (2%) poor outcomes. There were no significant disc collapses or extrusions. One patient had an increase in kyphotic deformity of > 5 degrees, none with > 10 degrees kyphosis. There were no wound infections or neurologic complications. The modified Smith-Robinson procedure for anterior cervical discectomy and fusion has led to the successful treatment of cervical radiculopathy and spondylosis with improved results and few complications.

MeSH terms

  • Bone Transplantation
  • Cervical Vertebrae / surgery*
  • Female
  • Follow-Up Studies
  • Humans
  • Internal Fixators
  • Intervertebral Disc / surgery*
  • Intervertebral Disc Displacement / epidemiology
  • Intervertebral Disc Displacement / surgery*
  • Male
  • Middle Aged
  • Smoking / epidemiology
  • Spinal Fusion / methods*
  • Spinal Osteophytosis / epidemiology
  • Spinal Osteophytosis / surgery*
  • Time Factors
  • Transplantation, Autologous
  • Treatment Outcome