Abstract
The authors present 19 cases of cervical spondylotic myelopathy in patients with developmentally narrow canal treated by microsurgical anterior osteophytectomy with interbody fusion, with follow-up periods of 1 to 8 years (mean 38 months). Postoperatively, the lower limb function, evaluated by Nurick's six-grade classification, improved two or three grades in 16 cases, one grade in two cases, and remained unchanged in one case. The upper limb function, evaluated by the authors' own four-grade classification, improved two or three grades in 11 cases, one grade in seven cases, and remained unchanged in one case. No deterioration caused by the osteophytectomy was seen. During the follow-up period, spondylolisthesis appeared 31 months postoperatively in one patient and soft disc hernia occurred 66 months postoperatively in another; these two patients were treated by a second operation and cervical traction, respectively. The authors conclude that anterior osteophytectomy with interbody fusion is applicable as a surgical treatment of cervical spondylotic myelopathy even where developmental canal stenosis is present.
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