{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,30]],"date-time":"2025-10-30T11:17:02Z","timestamp":1761823022385},"reference-count":39,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"5","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["SPI"],"published-print":{"date-parts":[[2007,11]]},"abstract":"<jats:sec>\n<jats:title>Object<\/jats:title>\n<jats:p>There have been few reports about the cervical spinal motion in patients with Chiari malformation Type I (CM-I) associated with syringomyelia. To investigate this phenomenon, the relationship between the preoperative cervical range of motion (ROM) and the stage of cerebellar tonsillar descent as well as the cervical ROM before and after foramen magnum decompression (FMD) were evaluated.<\/jats:p><\/jats:sec>\n<jats:sec>\n<jats:title>Methods<\/jats:title>\n<jats:p>Thirty patients who had CM-I associated with syringomyelia and who underwent FMD participated in the study. The ROM and lordosis angle of the cervical spine were measured on x-ray films. In addition, the relationship between preoperative degree of cerebellar tonsillar descent and the ROM between the levels of the occiput (Oc) and C2 was investigated.<\/jats:p><\/jats:sec>\n<jats:sec>\n<jats:title>Results<\/jats:title>\n<jats:p>The mean flexion\u2013extension ROM at Oc\u2013C2 was 15.5\u00b0 before and 14.1\u00b0 after surgery, and the mean flexion\u2013extension ROM of C2\u20137 was 55.1\u00b0 before and 52.8\u00b0 after surgery. The mean pre- and postoperative lordosis angles at C2\u20137 were 16.8 and 19.1\u00b0, respectively. There was no significant difference between the values measured before and after surgery. There was no correlation between the degree of cerebellar tonsillar descent and the ROM at Oc\u2013C2.<\/jats:p><\/jats:sec>\n<jats:sec>\n<jats:title>Conclusions<\/jats:title>\n<jats:p>Foramen magnum decompression is an excellent surgical technique that has no effect on the postoperative cervical ROM and cervical alignment.<\/jats:p><\/jats:sec>","DOI":"10.3171\/spi-07\/11\/473","type":"journal-article","created":{"date-parts":[[2007,12,13]],"date-time":"2007-12-13T21:35:28Z","timestamp":1197581728000},"page":"473-477","source":"Crossref","is-referenced-by-count":7,"title":["Cervical spinal motion before and after surgery in patients with Chiari malformation Type I associated with syringomyelia"],"prefix":"10.3171","volume":"7","author":[{"given":"Atsushi","family":"Ono","sequence":"first","affiliation":[{"name":"Departments of Orthopaedic Surgery, Hirosaki University School of Medicine and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Futoshi","family":"Suetsuna","sequence":"additional","affiliation":[{"name":"Hachinohe Municipal Hospital, Hachinohe, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kazumasa","family":"Ueyama","sequence":"additional","affiliation":[{"name":"Hirosaki Memorial Hospital, Hirosaki; and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Toru","family":"Yokoyama","sequence":"additional","affiliation":[{"name":"Departments of Orthopaedic Surgery, Hirosaki University School of Medicine and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shuichi","family":"Aburakawa","sequence":"additional","affiliation":[{"name":"Departments of Orthopaedic Surgery, Hirosaki University School of Medicine and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kazunari","family":"Takeuchi","sequence":"additional","affiliation":[{"name":"Departments of Orthopaedic Surgery, Hirosaki University School of Medicine and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takuya","family":"Numasawa","sequence":"additional","affiliation":[{"name":"Departments of Orthopaedic Surgery, Hirosaki University School of Medicine and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kanichiro","family":"Wada","sequence":"additional","affiliation":[{"name":"Departments of Orthopaedic Surgery, Hirosaki University School of Medicine and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Satoshi","family":"Toh","sequence":"additional","affiliation":[{"name":"Departments of Orthopaedic Surgery, Hirosaki University School of Medicine and"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1754","reference":[{"key":"b1-0070473","series-title":"J Comput Assist Tomogr","doi-asserted-by":"publisher","first-page":"1033","DOI":"10.1097\/00004728-198511000-00005","article-title":"Position of cerebellar tonsils in the normal population and in patients with Chiari malformation: a quantitative approach with MR imaging","volume":"9","author":"Aboulezz","year":"1985"},{"key":"b2-0070473","series-title":"Spine","doi-asserted-by":"publisher","first-page":"1425","DOI":"10.1097\/00007632-199907150-00007","article-title":"Posterior occipitocervical reconstruction using cervical pedicle screws and plate-rod systems","volume":"24","author":"Abumi","year":"1999"},{"key":"b3-0070473","series-title":"Spine","doi-asserted-by":"publisher","first-page":"1591","DOI":"10.1097\/00007632-199309000-00004","article-title":"Scoliosis associated with syringomyelia","volume":"18","author":"Arai","year":"1993"},{"key":"b4-0070473","series-title":"Neurosurgery","doi-asserted-by":"publisher","first-page":"214","DOI":"10.1227\/00006123-199408000-00006","article-title":"Quantitative cine-mode magnetic resonance imaging of Chiari I malformations: an analysis of cerebrospinal fluid dynamics","volume":"35","author":"Armonda","year":"1994"},{"key":"b5-0070473","series-title":"J Bone Joint Surg Br","first-page":"472","article-title":"Progressive scoliosis as the first presenting sign of syringomyelia. 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