Effects of Cage Implantation Depth on Sagittal Parameters and Functional Outcomes in Posterior Lumbar Interbody Fusion for the Treatment of L4‐L5 Lumbar Degenerative Spondylolisthesis

• DOI: 10.1111/os.14071
• Publication Date: 2024-04-23T04:43:49Z
• Authors: Lei Deng; Chengyue Wang; Haifu Sun; Nanning Lv; Yang Shen; Zhonglai Qian; Hao Liu
• Keywords: Pelvic tilt; Oswestry Disability Index; Cage

Objective In the treatment of lumbar degenerative spondylolisthesis (LDS) with Posterior interbody fusion (PLIF) surgery, implants play a key role in supporting vertebral body and facilitating fusion. The objective this study was to assess impact implantation depth on sagittal parameters functional outcomes patients undergoing PLIF surgery. Methods This reviewed 128 L4‐L5 LDS between January 2016 August 2019. All underwent an open surgery that included intravertebral decompression, pedicle screws cage. We grouped according position center cage relative L5 endplate. Patients located at anterior 1/2 upper end plate were divided into Anterior group, posterior group. lordosis (LL), segmental (SL), sacral slope (SS), pelvic incidence (PI), tilt (PT) degree (SD) measured for radiographic outcomes. used visual analog scale (VAS) oswestry disability index (ODI) score Paired t ‐test compare imaging bedside data before after two groups, independent sample ‐test, χ 2 test Fisher exact groups. Result mean follow‐up group 44.13 ± 9.23 months, 45.62 10.29 months ( P > 0.05). LL, SL, PT, SS, SD PI‐LL operation showed great improvements, corresponding preoperative values both groups < Compared exhibited far enhanced SL (15.49 3.28 vs. 13.67 2.53, 0.05), LL (53.47 3.21 52.08 3.15, 0.05) depressed (8.87 5.05 10.73 5.39, final follow‐up. Meanwhile, (16.18 3.99) 1 also higher than (14.12 3.57) found VAS ODI (3.62 0.96, 25.19 5.25) significantly lower those (4.12 0.98, 27.68 5.13) Conclusions For LDS, anteriorly placed may provide better improvement achieve