Surgical Outcomes of Spondylolisthesis Comparing Open Lumbar Interbody Fusion with or without Posterior Lumbar Interbody Fusion (PLIF) Cage

Objective: This study aimed to evaluate the surgical outcomes of spondylolisthesis by comparing open lumbarinterbody fusion with or without the use of a posterior lumbar interbody fusion (PLIF) cage. Method: A totalof 15 cases of PLIF were performed between May 2023 and December 2024 at Holy Family Red CrescentMedical College Hospital, Neurosurgery Unit 2. The study included 8 male and 7 female patients aged 36–68years. Surgical outcomes of lumbar interbody fusion with or without PLIF cages in spondylolisthesis caseswere assessed using PROMIS scores. Each patient underwent comprehensive follow-up and neurologicalassessment. Result: Complications included one superficial wound infection, one minor cerebrospinal fluid(CSF) leak successfully managed intraoperatively, and one case of deep vein thrombosis. Larger cages (1 mmlarger) demonstrated efficacy in reducing cage subsidence. Conclusion: PLIF is effective for spondylolisthesis,yielding good outcomes with cage usage. Larger cages are associated with a decreased incidence of subsidenceand dislodgement.