Cage Migration after Transforaminal Lumbar Interbody Fusion and Factors Related to It

作者：Fengdong Zhao, Wei Yang, Zhi Shan, Jian Wang, Hai‐xiao Chen, Zhenghua Hong, Yu Qian, Dengwei He, Shunwu Fan · 发表于：Orthopaedic Surgery · 年份：2012 · DOI：10.1111/os.12004 · 被引用次数：67 · 研究领域：Spine and Intervertebral Disc Pathology、Cervical and Thoracic Myelopathy、Spinal Fractures and Fixation Techniques

OBJECTIVE: To review and analyze cage migration and related risk factors in patients who have undergone transforaminal lumbar interbody fusion (TLIF). METHODS: A retrospective study was conducted to review the complications of cage migration in 512 patients who had undergone a TLIF procedure from January 2010 to June 2011 in five spinal centers. In all, 263 men and 249 women with a mean age of 54.7 years were included. All patients were followed up at 3, 6 and 12 months after the procedure. The clinical outcomes were evaluated by visual analogue scores, the Oswestry disability index, plain radiography and three-dimensional CT scanning to analyze the incidence of, and risk factors related to, cage migration. RESULTS: Cage migration was found in 6 of the 512 patients (1.17%). Significant differences were found between all pairs of centers. Different shapes and sizes of cages had different incidences of migration. Analysis showed that rectangular-shaped cages had a significantly greater incidence of cage migration (3.11%, 5/161) than did kidney-shaped cages (0.28%, 1/351; P < 0.05). Small cages had a tendency to more frequent post-operative cage migration (5.13%, 4/78) than did large cages (0.46%, 2/434; P < 0.05). Double segment TLIF cages migrated more frequently (5.75%, 5/87) than did mono-segment cages (0.24%, 1/425; P < 0.05)). Furthermore, when the adjacent endplates were of linear type, the cages migrated much more frequently (3.50%) than when they were of concave-concave...