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Laminoplasty Versus Subtotal Corpectomy| A Comparative Study of Results in Multisegmental Cervical Spondylotic Myelopathy

Yonenobu, Kazuo, MD; Hosono, Noboru, MD; lwasaki, Motoki, MD; Asano, Masatoshi, MD; Ono, Keiro, MD

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A comparative study of surgical results was used to determine the tratment of choice for multisegmental cervical spondylotic myelopathy, forty-one patients who received subtotal corpectomy and strut grafting (SCS) and forty-tow undergoing laminoplasty were followed up for at least 2 years after surgery. Regarding factos known to affect surgical prognosis (age at surgery, duration of symptoms, severity of neurologic deficit, anteroposterior canal diameter, transverse area of the cord at the site of maximum compression, number of levels invoived), the two groups were statistically comparable with each other. The sevenity of neurologic deficits was assessed by the Japaneses Orthopaedic Association scale. Results were evaluated in terms of postoperative score and recovery rate, The difference between the recovery rate and final score between the two groups was not statistically significant. Surgical complications were more frequent in the subtotal corpectomy and strut grafting group than in the laminoplasty group. The most frequent complications encountered in the subtotal corpectomy and strut grafting group were related to bone grafting. Spinal aligment worsened in six patients of the laminoplasty group, but none of them suffered from neurologic deterioration, Another disadvantage of subtotal corpectomy and strut grafting was the longer postoperative period of bed rest needed to secure graft stability. We conclude that laminoplasty should be the treatment of choice for multisegmental cervical spondylotic myelopathy when neurologic results, incidence of complications, and postoperstive treatment are taken into consideration.

Department of Orthopaedic Surgery, Osaka University Medical School, Osaka, Japan.

Preliminary results of this work were presented at the annual meeting of the Cervical Spine Research Society, Philadelphia, December 3–6, 1991.

© Lippincott-Raven Publishers.