{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,6]],"date-time":"2026-06-06T08:59:55Z","timestamp":1780736395943,"version":"3.54.1"},"reference-count":38,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["FOC"],"published-print":{"date-parts":[[2008,1]]},"abstract":"<jats:p>\u2713 Ankylosing spondylitis can lead to severe cervical kyphosis, causing problems with forward vision, swallowing, hygiene, patient functionality, and social outlook. Evaluation of patients with cervical flexion deformity includes assessment of global sagittal balance and chin\u2013brow angle. The primary treatment in extreme disabling cases is surgical correction involving a posterior cervical extension osteotomy, which is a technically demanding procedure with considerable risk of neurological injury. To address the potential complications with extension osteotomy, the authors of several reports have described modifications to the surgical technique. These developments incorporate recent advances in anesthesia, neuromonitoring, and spinal instrumentation. Complications associated with the procedure include subluxation at the osteotomy level, spinal cord injury, radiculopathy, dysphagia, and pseudarthrosis. Although the risks of spinal correction are considerable, extension osteotomy remains an effective treatment modality for patients with disabling cervical flexion deformity.<\/jats:p>","DOI":"10.3171\/foc\/2008\/24\/1\/e9","type":"journal-article","created":{"date-parts":[[2008,1,14]],"date-time":"2008-01-14T13:27:37Z","timestamp":1200317257000},"page":"E9","source":"Crossref","is-referenced-by-count":64,"title":["Management of cervical deformity in ankylosing spondylitis"],"prefix":"10.3171","volume":"24","author":[{"given":"Daniel J.","family":"Hoh","sequence":"first","affiliation":[{"name":"Department of Neurological Surgery, Keck School of Medicine, University of Southern California, Los Angeles, California;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paul","family":"Khoueir","sequence":"additional","affiliation":[{"name":"Department of Neurological Surgery, Universit\u00e9 de Montr\u00e9al, Montr\u00e9al, Canada; and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael Y.","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Neurological Surgery, Miller School of Medicine, University of Miami, Florida"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1754","reference":[{"key":"b1-0240009","series-title":"J Bone Joint Surg Am","first-page":"1732","article-title":"Cervico-thoracic extension osteotomy for chin-on-chest deformity in ankylosing spondylitis","volume":"87","author":"Belanger","year":"2005"},{"key":"b2-0240009","series-title":"Spine","first-page":"536","article-title":"Anterior spinal fusion complicated by paraplegia. 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