Abstract：
In order to analyze and evaluate the stability of lumbar spine and the risk of cage subsidence after different minimally invasive fusion operations, two finite element models Percutaneous endoscopic posterior lumbar interbody fusion (PE-PLIF) and minimally invasive transforaminal lumbar interbody Fusion (MIS-TLIF) were established. The results showed that compared with MIS-TLIF, PE-PLIF had better segmental stability, lower pedicle screw rod system stress, and lower risk of cage subsidence. The results suggest that the cage with appropriate height should be selected to ensure the segmental stability and avoid the risk of the subsidence caused by the cage with large height.
摘要：
为了分析和评估不同微创融合术后腰椎稳定性和融合器下沉的风险,建立了经皮内镜下后路腰椎椎间融合术（PE-PLIF）和微创经椎间孔腰椎椎间融合术（MIS-TLIF）两种有限元模型。结果表明,与MIS-TLIF相比,PE-PLIF具有较好的节段稳定性,下椎弓根螺钉杆系统应力，降低网箱沉降的风险。结果表明，应选择合适高度的网箱，以确保节段稳定性，避免高度较大的网箱引起沉降的风险。
