Background: There is a general impression that publications in neuro-surgical journals have comprehensively evaluated the relative merits of various operative techniques with long-term follow-up in patients treated for compressive cervical radiculopathy. However, in some 20,000 neurosurgical papers over the past 50 years, only 74 (0.3%) have addressed this common surgical problem.
Methods: Long-term outcome was assessed by the standardized Functional Economic Outcome Rating Scale of Prolo. Information was obtained primarily by telephone interviews and office visits. No patients were operated upon without a confirmatory neuroradiologic study. Single level soft discs were removed through a posterior-lateral foraminotomy with hemilaminectomy or laminectomy the root was decompressed by the same technique with hard discs.
Results: One hundred seventy patients were operated on from 1959-91 with a 96% follow-up. The mean follow-up period was 15 years. Patients who had sedentary occupations and housewives, had statistically higher Economic Prolo scores (p < 0.001) than those who did strenuous work. Of 10 patients with a total Prolo score of 5 or less, seven did strenuous work and had Workers' Compensation claims; the remaining had legal claims or were at psychologic risk for operation. In 86% of patients outcome was good; defined as a Prolo score of 8 in 5%, 9 in 38%, and 10 in 43%. Of 10 recurrences (6%), seven occurred within 3 years after operation and were treated by discectomy and anterior cervical fusion. There were two patients with postoperative deltoid motor weakness who recovered within 1 year.
Conclusions: Although outcome studies must have subjective criteria, the Prolo Scale is more objective and quantitative than currently used methods. The posterior approach to disc lesions causing compressive cervical radiculopathy should be compared to other techniques using the Prolo Outcome Scale.