Clinical Efficacy of Spinal Instrumentation in Lumbar Degenerative Disc Disease

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Abstract
In review of 871 lumbar fusion procedures performed during the last 8 years, the theoretical advantages of lumbar spinal instrumentation are not borne out in simple discogenic disease. Four groups of 30-35 patients without previous surgery who underwent fusion by different techniques were matched for age, sex, length of follow-up, surgeons, number of levels fused, duration of preoperative symptoms, diagnosis, and type of third party payer. At least for the diagnoses of herniated disc with segmental instability and the instrumentation systems used in this study, results were superior with no internal fixation. This is in keeping with the higher complication rates and frequent need for implant removal reported by many authors.

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