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Subsidence and nonunion after anterior cervical interbody fusion using a stand-alone polyetheretherketone (PEEK) cage

DC Field Value Language
dc.contributor.authorYang, Jae Jun-
dc.contributor.authorYu, Chang Hun-
dc.contributor.authorChang, Bong-Soon-
dc.contributor.authorYeom, Jin Sup-
dc.contributor.authorLee, Jae Hyup-
dc.contributor.authorLee, Choon-Ki-
dc.creator염진섭-
dc.date.accessioned2013-01-25T06:24:38Z-
dc.date.available2013-01-25T06:24:38Z-
dc.date.issued2011-03-
dc.identifier.citationCLINICS IN ORTHOPEDIC SURGERY Vol.3 No.1, pp. 16-23-
dc.identifier.issn2005-291X-
dc.identifier.urihttps://hdl.handle.net/10371/81098-
dc.description.abstractBackground: The purposes of the present study are to evaluate the subsidence and nonunion that occurred after anterior cervical discectomy and fusion using a stand-alone intervertebral cage and to analyze the risk factors for the complications.Methods: Thirty-eight patients (47 segments) who underwent anterior cervical fusion using a stand-alone polyetheretherketone (PEEK) cage and an autologous cancellous iliac bone graft from June 2003 to August 2008 were enrolled in this study. The anterior and posterior segmental heights and the distance from the anterior edge of the upper vertebra to the anterior margin of the cage were measured on the plain radiographs. Subsidence was defined as ≥ a 2 mm (minor) or 3 mm (major) decrease of the segmental height at the final follow-up compared to that measured at the immediate postoperative period. Nonunion was evaluated accordingto the instability being ≥ 2 mm in the interspinous distance on the flexion-extension lateral radiographs.Results: The anterior and posterior segmental heights decreased from the immediate postoperative period to the final follow-up at 1.33 ± 1.46 mm and 0.81 ± 1.27 mm, respectively. Subsidence ≥ 2 mm and 3 mm were observed in 12 segments (25.5%) and 7 segments (14.9%), respectively. Among the expected risk factors for subsidence, a smaller anteroposterior (AP) diameter (14 mm vs. 12 mm) of cages (p = 0.034; odds ratio [OR], 0.017) and larger intraoperative distraction (p = 0.041; OR, 3.988) had a significantlyhigher risk of subsidence. Intervertebral nonunion was observed in 7 segments (7/47, 14.9%). Compared with the union group, the nonunion group had a significantly higher ratio of two-level fusion to one-level fusions (p = 0.001).Conclusions: Anterior cervical fusion using a stand-alone cage with a large AP diameter while preventing anterior intraoperative over-distraction will be helpful to prevent the subsidence of cages. Two-level cervical fusion might require more careful attention for avoiding nonunion.Keywords: Anterior cervical fusion, PEEK cage, Subsidence, Nonunionen
dc.language.isoenen
dc.publisherKorean Orthopaedic Associationen
dc.subject의약학en
dc.subjectAnterior cervical fusion-
dc.subjectPEEK cage-
dc.subjectSubsidence-
dc.subjectNonunion-
dc.titleSubsidence and nonunion after anterior cervical interbody fusion using a stand-alone polyetheretherketone (PEEK) cageen
dc.typeArticle-
dc.contributor.AlternativeAuthor양재준-
dc.contributor.AlternativeAuthor유창훈-
dc.contributor.AlternativeAuthor장봉순-
dc.contributor.AlternativeAuthor염진섭-
dc.contributor.AlternativeAuthor이재협-
dc.contributor.AlternativeAuthor이준기-
dc.identifier.doi10.4055/cios.2011.3.1.16-
dc.description.srndOAIID:oai:osos.snu.ac.kr:snu2011-01/102/0000004226/3-
dc.description.srndSEQ:3-
dc.description.srndPERF_CD:SNU2011-01-
dc.description.srndEVAL_ITEM_CD:102-
dc.description.srndUSER_ID:0000004226-
dc.description.srndEMP_ID:A076317-
dc.description.srndDEPT_CD:801-
dc.description.srndFILENAME:E031T_CiOS-2011_Yang_Subsidence and nonunion after anterior cervical.pdf-
dc.description.srndDEPT_NM:의학과-
dc.description.srndEMAIL:highcervical@gmail.com-
dc.description.srndSCOPUS_YN:N-
dc.description.srndCONFIRM:Y-
dc.identifier.srnd2011-01/102/0000004226/3-
Appears in Collections:
College of Medicine/School of Medicine (의과대학/대학원)Orthopedic Surgery (정형외과학전공)Journal Papers (저널논문_정형외과학전공)
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