[The follow-up study of the multiple intervertebral fusions, especially on the influence of spine fusion upon the vicinity of fusion].
D002574:Cervical Vertebrae / Q000601:surgery*; D005500:Follow-Up Studies; D006801:Humans; D008159:Lumbar Vertebrae / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D013122:Spinal Diseases / Q000601:surgery*; D013123:Spinal Fusion