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논문 기본 정보

자료유형
학술저널
저자정보
이동영 (군대대구병원) 박영진 (경상대학병원) 송상연 (경상대학교병원) 정순택 (경상대학교) 김동희 (경상대학교)
저널정보
대한척추외과학회 Asian Spine Journal Asian Spine Journal Vol.12 No.1
발행연도
2018.1
수록면
59 - 68 (10page)

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Study Design: A retrospective clinical case series. Purpose: To determine the strength of association between cage retropulsion and its related factors. Overview of Literature: Lumbar interbody fusion with cage can obtain a firm union and can restore the disc height with normal sagittal and coronal alignment. Although lumbar interbody fusion procedures have satisfactory clinical outcomes, peri- and postoperative complications regarding the cage remain challenging. Methods: From January 2006 to June 2016, 1,047 patients with lumbar degenerative disc disease who underwent posterior lumbar interbody fusion or transforaminal interbody fusion at Gyeongsang National University Hospital were enrolled. Medical records and pre- and postoperative radiographs were reviewed to identify significant cage retropulsion-related factors. The associations between cage retropulsion with various risk factors were evaluated by calculating odds ratios (ORs) and 95% confidence intervals (CIs) using multiple logistic regression analysis. Results: Of 1,229 disc levels, 16 cases (1.3%, 10 men and 6 women) had cage retropulsion. Univariate analysis revealed no significant differences between the cage retropulsion group and the no cage retropulsion group with regard to demographic data such as age, sex, weight, height, body mass index (BMI), smoking habits, presence of osteoporosis, and duration of follow-up. Multivariate analysis revealed that low BMI (OR, 0.875; 95% CI, 0.771–0.994; p =0.040), presence of screw loosening (OR, 27.400; 95% CI, 7.818– 96.033; p <0.001), and pear-shaped disc (OR, 9.158; 95% CI, 2.455–34.160; p =0.001) were significantly associated with cage retropulsion. Conclusions: This study demonstrated that low BMI, loosening of posterior instrumentation, and pear-shaped disc were associated with cage retropulsion after lumbar interbody fusion. Therefore, when performing lumbar interbody fusion with a cage, surgeons should have skillful surgical techniques for firm fixation to prevent cage retropulsion, particularly in non-obese patients.

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