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Outcomes of Surgery for Spinal Canal Stenosis in Patients with Achondroplasia. Report of Six Cases Yoichi MURATA 1 , Yukitaka NAGAMOTO 2 , Masafumi KASHII 3 , Takahito FUJIMORI 3 , Hidekazu TOBIMATSU 2 , Hiroyuki AONO 2 , Motoki IWASAKI 3 1Department of Orthopaedic Surgery, Japanese Red Cross Society Himeji Hospital 2Department of Orthopaedic Surgery, Osaka Medical Center 3Department of Orthopaedic Surgery, Graduate School of Medicine, Osaka University Keyword: 軟骨無形成症 , achondroplasia , 脊柱管狭窄症 , spinal canal stenosis , 胸腰椎移行部後弯変形 , thoracolumbar kyphosis pp.799-803
Published Date 2013/8/25
DOI https://doi.org/10.11477/mf.1408102796
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 We report six cases in which laminectomy was performed to treat spinal canal stenosis in patients with achondroplasia. The patients' mean age at the time of the first operation was 27-year-old, and their mean follow-up period was 63 months. The mean preoperative kyphotic angle was 21 degrees. Extensive laminectomy was performed in all cases, and it was combined with instrumented fusion in 2 cases. Reoperation was necessary in one case. The mean kyphotic angle at the most recent examination was 25 degrees. The mean JOA score improved from 4.4 points preoperatively to 7.0 points at the most recent follow-up examination. Four of the patients had not received regular examinations since treatment during their childhood was completed, and serious neurologic symptoms remained in 2 of them because of a delay in the initiation of treatment for spinal canal stenosis. The symptoms of spinal canal stenosis in patients with achondroplasia usually develop after adulthood. Based on our experience, it is important to avoid missing the optimal timing for surgery by educating patients and/or continuing regular examinations.


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

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