title: Risk factors for the development of adjacent segment disease following anterior cervical arthrodesis for degenerative cervical disease: comparison between fusion methods.
abstract: This study aimed to determine the risk factors for developing adjacent segment disease (ASDz) after anterior cervical arthrodesis for the treatment of degenerative cervical disease by analyzing patients treated with various fusion methods. We enrolled 242 patients who had undergone anterior cervical fusion for degenerative cervical disease, and had at least 5years of follow-up. We evaluated the development of ASDz and the rate of revision surgery. To identify the risk factors for ASDz, the sagittal alignment, spinal canal diameter, range of motion of the cervical spine, number of fusion segments, and fusion methods were evaluated. The patients were divided into three groups according to the fusion method: Group A contained patients who had received autogenous bone graft only (53 patients), Group B contained patients who received autogenous bone graft and plate augmentation (62 patients), and Group C contained patients who underwent cage and plate augmentation (127 patients). ASDz occurred in 33 patients, of whom 19 required additional surgery. The risk of developing ASDz was significantly higher in male patients (p=0.043), patients whose range of motion of the cervical spine was >30° (p=0.027), and patients with spinal canal stenosis (p=0.010). The rate of development of ASDz was not different depending on the number of fusion segments. The rate of development of ASDz was 41.5% in Group A, 9.6% in Group B, and 5.51% in Group C (p=0.03). In patients who underwent anterior cervical arthrodesis for degenerative disease, the occurrence of ASDz was related to age, the cervical spine range of motion, and spinal canal stenosis. Additional plate augmentation for anterior cervical arthrodesis surgery can lower the rate of ASDz development.
authors: Department of Radiology, Chonbuk National University Hospital, Jeonju, Republic of Korea.
authors: Ji-Soo
authors: JS
authors: Song
authors: Department of Orthopedic Surgery, Inje University, Haeundae Paik Hospital, 1435, Jwa-dong, Haeundae-gu, Busan 612-030, Republic of Korea. Electronic address: alla1013@naver.com.
authors: Byung-Wan
authors: BW
authors: Choi
authors: Department of Orthopedic Surgery, Chonbuk National University Hospital, Jeonju, Republic of Korea.
authors: Kyung-Jin
authors: KJ
authors: Song
mesh_terms: D001174:Arthrodesis / Q000009:adverse effects; D016025:Bone Transplantation / Q000009:adverse effects; D002574:Cervical Vertebrae / Q000000981:diagnostic imaging* / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000000981:diagnostic imaging* / Q000209:etiology; D011859:Radiography; D012189:Retrospective Studies; D012307:Risk Factors; D013118:Spinal Cord Diseases / Q000000981:diagnostic imaging* / Q000601:surgery*; D013123:Spinal Fusion / Q000009:adverse effects*
keywords: Additional plating; Adjacent segment disease; Anterior fusion; Cervical spine; Risk factor