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Posterior Decompression for Ossification of the Ligamentum Flavum by a muscle-preserving interlaminar decompression (MILD) Approach Shigeyuki KITANAKA 1 , Yoichiro HATTA 2 , Masateru NAGAE 3 , Hironori KOIKE 2 , Yasuo MIKAMI 3 , Toshikazu KUBO 3 1Department of Orthopaedic Surgery, Maizuru Red Cross Hospital 2Department of Orthopaedic Surgery, Kyoto Second Red Cross Hospital 3Department of Orthopaedic Surgery, Graduate School of Medical Science, Kyoto Prefectural University of Medicine Keyword: 黄色靱帯骨化症 , ossification of ligamentum flavum , OLF , 低侵襲手術 , minimally invasive surgery , 除圧術 , decompression pp.385-390
Published Date 2014/4/25
DOI https://doi.org/10.11477/mf.1408103025
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 This study assessed posterior decompression by a muscle-preserving interlaminar decompression (MILD) approach as a means of treating ossification of the ligamentum flavum (OLF). A midline incision was made, and the supraspinous ligament was split longitudinally. The cranial and caudal edge of the OLF can be easily identified in the operative field, and the OLF can be accurately removed according to the preoperative evaluation (excision width) on computerized tomograms. The clinical results and radiological assessments of four OLF patients were retrospectively reviewed. Mean intraoperative blood loss was 41 g per segment. The mean recovery rate according to the Japanese Orthopaedic Association (JOA) score was 54%, and the mean change in lordotic angle was 2.2 degrees. The clinical outcome was satisfactory in all four cases. We concluded that the bloodless, symmetrical, wide operative field allowed complete removal of the OLF and that this procedure is a safe and useful minimally invasive surgical procedure for the treatment of OLF.


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

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