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General Orthopaedics

ANTERIOR CERVICAL DISC REPLACEMENT: EARLY CLINICAL RESULTS

Combined Irish Orthopaedic Association, Welsh Orthopaedic Association, Scottish Orthopaedic Association (IOA, WOA, SOA)



Abstract

Background

There have been limited published reports on the clinical results of cervical artificial disc replacement. Goffin et al reported a 90% rate of good to excellent results at 1 to 2 yrs after Bryan disc replacement. Wigfield et al reported a 46% improvement in pain and 31% improvement in disability 2 yrs after Prestige cervical disc replacement.

Objectives

The study was designed to determine whether new functional cervical disc prosthesis can provide improvement in the ability to perform activities of daily living, decrease pain and segmental motion.

Methods

All patients who had Prestige cervical disc replacement over last 2yrs 3 months were identified. Oswestry disability index score and SF36 Quality of life instrument were administered to each patient. Site specific pain scores were obtained using visual analogue scale. Clinical and operative details were reviewed and correlated.

Results

35 Patients underwent 48 Prestige cervical disc replacement during study period.

There was 48%, 54% and 70% improvement in Oswestry disability index at 6 weeks, 6 months and 19 months follow-ups respectively. There was significant improvements in both neck and arm pain during immediate post op period and during further follow-ups. There was one neck wound haematoma and one left sided Horner's syndrome as complications.

Conclusion

Anterior cervical disc replacement is a viable surgical alternative to fusion for cervical disc degenerative disease and herniation with preservation of motion and alignment without compromising clinical outcomes. At least 5yrs follow-up will be needed to assess the long term functionality of the prosthesis and protective influence on the adjacent levels.