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Clinical Results of Micro-Discectomy Using the METRx System for Lumbar Disc Herniation : Preliminary Report Based on a Comparative Analysis with Love's Method Takuya Fujita 1 , Tetsuhito Okuda 1 , Hidetaka Hosokawa 1 , Eiju Hatano 1 , Tadami Matsumoto 1 1Department of Orthopaedic Surgery, Kanazawa Medical University Keyword: METRx micro-discectomy , METRx顕微鏡下ヘルニア摘出術 , clinical results , 臨床成績 , lumbar disc herniation , 腰椎椎間板ヘルニア pp.1281-1286
Published Date 2003/10/1
DOI https://doi.org/10.11477/mf.1408100833
  • Abstract
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 We evaluated the usefulness and invasiveness of METRx micro-discectomy (METRx MD) by comparing it with Love's method. Nineteen patients treated by METRx MD and seventeen patients treated by the Love's method, as control group, were included in this study. Every operation in both groups was performed by the same surgeon. Clinical results in the two groups were compared on the basis of 1)operation time, 2)recovery rate according to JOA score, 3)total dose of analgesics administered, and 4)blood study findings, including leukocyte count, erythrocyte sedimentation rate, creatine phosphokinase activity, and C-reactive protein levels. JOA scores were calculated one month following surgery. The total dose of analgesics administered was determined on the basis of times the patient needed suppositories postoperatively as recorded on the medical chart. Operation time averaged 65minutes in the METRx MD group and 68minutes in the Love's group, with no significant difference. Recovery rates based on the JOA score averaged 86.6% and 82.7%, respectively, with no significant difference. Howeber, the average total dose of analgesics administered postoperatively was “0.2 times” in the METRx MD group, and “0.9 times” in the Love's group, and it was significantly higher in the Love's group. The C-reactive protein level one week postoperatively was significantly lower in the METRx MD group than in the Love's group. The METRx MD method does not require any special training, and it provided good results, similar to Love's method. It had the advantage of being less invasive than Love's method, and we concluded that METRx MD is a useful procedure for the treatment of lumbar disc herniation.


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電子版ISSN 1882-1286 印刷版ISSN 0557-0433 医学書院

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