Turkish Neurosurgery 2023 , Vol 33 , Num 4
Comparison of Long-Term Follow-Up Outcomes Between Minimally Invasive and Open Surgery for Single-Level Lumbar Fusion
Tae Seok JEONG1,Seong SON2,Sang Gu LEE2,Woo Kyung KIM1,Byung Rhae YOO2,Woo Seok KIM1
1Gil Medical Center, Gachon University College of Medicine, Department of Traumatology, Incheon, Korea
2Gil Medical Center, Gachon University College of Medicine, Department of Neurosurgery, Incheon, Korea
DOI : 10.5137/1019-5149.JTN.40281-22.4 AIM: To evaluate, and to compare the clinical outcomes of minimally invasive surgery (MIS), and open surgery for single-level lumbar fusion over a minimum of 10-year follow-up.

MATERIAL and METHODS: We included 87 patients who underwent spinal fusion at the L4 ? L5 level between January 2004 and December 2010. Based on the surgical method, the patients were divided into the open surgery (n=44) and MIS groups (n=43). We evaluated baseline characteristics, perioperative comparisons, postoperative complications, radiologic findings, and patientreported outcomes.

RESULTS: The mean follow-up period was > 10 years in both groups (open surgery, 10.50 years; MIS, 10.16 years). The operative time was longer in the MIS group (4.37 h) than that in the open surgery group (3.34 h) (p=0.001). Estimated blood loss was lower in the MIS group (281.40 mL) than in the open surgery group (440.23 mL) (p<0.001). Postoperative complications, including surgical site infection, adjacent segment disease, and pseudoarthrosis, did not differ between the groups. Plain radiographic findings of the lumbar spine did not differ between the two groups. Visual scores for back/leg pain and the Oswestry disability index did not differ between the two groups, preoperatively and at 6 months, 1, 5, and 10 years after surgery.

CONCLUSION: After a minimum of the 10-year follow-up, postoperative complications and clinical outcomes did not differ significantly between patients who underwent open fusion and MIS fusion at the L4 ? L5 level. Keywords : Minimally invasive surgery, Open surgery, Patient-reported outcome measures, Spinal fusion, Treatment outcome

Corresponding author : Seong SON, sonseong@gilhospital.com