{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,9]],"date-time":"2026-07-09T09:14:49Z","timestamp":1783588489254,"version":"3.55.0"},"reference-count":22,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2019,10]]},"abstract":"<jats:sec><jats:title>OBJECTIVE<\/jats:title><jats:p>This study aimed to quantify the response of the cervical spine to the surgical correction of Scheuermann\u2019s kyphosis (SK) and to postoperative proximal junctional kyphosis (PJK).<\/jats:p><\/jats:sec><jats:sec><jats:title>METHODS<\/jats:title><jats:p>Fifty-nine patients (mean age 14.6 \u00b1 2.3 years) were enrolled in the study: 35 patients in a thoracic SK (T-SK) group and 24 in a thoracolumbar SK (TL-SK) group. The mean follow-up period was 47.2 \u00b1 17.6 months. Radiographic data, PJK-related complications, and patient-reported outcomes were compared between groups.<\/jats:p><\/jats:sec><jats:sec><jats:title>RESULTS<\/jats:title><jats:p>The global kyphosis significantly decreased postoperatively, and similar correction rates were observed between the two groups (mean 47.1% \u00b1 8.6% [T-SK] vs 45.8% \u00b1 9.4% [TL-SK], p = 0.585). The cervical lordosis (CL) in the T-SK group notably decreased from 21.4\u00b0 \u00b1 13.3\u00b0 to 13.1\u00b0 \u00b1 12.4\u00b0 after surgery and was maintained at 14.9\u00b0 \u00b1 10.7\u00b0 at the latest follow-up, whereas in the TL-SK group, CL considerably increased from 7.2\u00b0 \u00b1 10.7\u00b0 to 11.7\u00b0 \u00b1 11.1\u00b0 after surgery and to 13.8\u00b0 \u00b1 8.9\u00b0 at the latest follow-up. PJK was identified in 16 patients (27.1%). Its incidence in the TL-SK group was notably higher than it was in the T-SK group (41.6% [n = 10] vs 17.1% [n = 6], p = 0.037). Compared with non-PJK patients, PJK patients had greater CL and lower pain scores on the Scoliosis Research Society\u201322 questionnaire (p &lt; 0.05).<\/jats:p><\/jats:sec><jats:sec><jats:title>CONCLUSIONS<\/jats:title><jats:p>Hyperkyphosis correction eventually resulted in reciprocal changes in the cervical spine, with CL notably decreased in the T-SK group but significantly increased in the TL-SK group. Patients developing PJK have increased CL, which seems to have a negative effect on patients\u2019 health-related quality of life.<\/jats:p><\/jats:sec>","DOI":"10.3171\/2019.3.spine1916","type":"journal-article","created":{"date-parts":[[2019,6,7]],"date-time":"2019-06-07T22:49:25Z","timestamp":1559947765000},"page":"493-500","source":"Crossref","is-referenced-by-count":3,"title":["How does the cervical spine respond to hyperkyphosis correction in Scheuermann\u2019s disease?"],"prefix":"10.3171","volume":"31","author":[{"given":"Liang","family":"Xu","sequence":"first","affiliation":[{"name":"Spine Surgery, Drum Tower Hospital, Nanjing University Medical School; and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Benlong","family":"Shi","sequence":"additional","affiliation":[{"name":"Spine Surgery, Drum Tower Hospital, Nanjing University Medical School; and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yong","family":"Qiu","sequence":"additional","affiliation":[{"name":"Spine Surgery, Drum Tower Hospital, Nanjing University Medical School; and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhonghui","family":"Chen","sequence":"additional","affiliation":[{"name":"Spine Surgery, Drum Tower Hospital, Nanjing University Medical School; and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xi","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Spine Surgery, Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing, Jiangsu Province, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Song","family":"Li","sequence":"additional","affiliation":[{"name":"Spine Surgery, Drum Tower Hospital, Nanjing University Medical School; and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Changzhi","family":"Du","sequence":"additional","affiliation":[{"name":"Department of Spine Surgery, Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing, Jiangsu Province, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qingshuang","family":"Zhou","sequence":"additional","affiliation":[{"name":"Department of Spine Surgery, Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing, Jiangsu Province, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zezhang","family":"Zhu","sequence":"additional","affiliation":[{"name":"Spine Surgery, Drum Tower Hospital, Nanjing University Medical School; and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xu","family":"Sun","sequence":"additional","affiliation":[{"name":"Spine Surgery, Drum Tower Hospital, Nanjing University Medical School; and"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1754","reference":[{"key":"b1","series-title":"Spine Deform","doi-asserted-by":"publisher","first-page":"404","DOI":"10.1016\/j.jspd.2014.04.013","article-title":"Change in sagittal plane alignment following surgery for Scheuermann\u2019s kyphosis","volume":"2","author":"Ashraf A","year":"2014","unstructured":"Ashraf A, Noelle Larson A, Polly DW, Ferski G, Guidera KJ, Mielke CH: Change in sagittal plane alignment following surgery for Scheuermann\u2019s kyphosis. 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