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Lee S, Jung JW, Lee SW, Kim KT, Kwon HD, Lee S, Ko YS, Kim P, Cho DC. Fusion Assessment of Oblique Lumbar Interbody Fusion Using Demineralized Bone Matrix: A 2-Year Prospective Study. Neurospine 2023; 20:1205-1216. [PMID: 38171289 PMCID: PMC10762405 DOI: 10.14245/ns.2347032.516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 11/24/2023] [Accepted: 12/03/2023] [Indexed: 01/05/2024] Open
Abstract
OBJECTIVE Although several studies have reported successful fusion rates after oblique lumbar interbody fusion (OLIF) using allografts or dimerized bone matrix (DBM) instead of autografts, whether OLIF can achieve satisfactory solid fusion without the use of autografts remains unclear. This study investigated the real fusion rates after OLIF using allografts and DBM, which were evaluated using both dynamic radiographs and computed tomography scans. METHODS We enrolled 79 consecutive patients who underwent minimally invasive OLIF followed by percutaneous pedicle screw fixation. All patients were treated with OLIF between L2 and L5 and underwent radiographic and clinical follow-ups at 12, 18, and 24 months after surgery. Radiographic assessment of fusion was performed using the modified BrantigaSteffee-Fraser (mBSF) scale, which was categorized as follows: grades I (radiographic pseudoarthrosis), II (indeterminate fusion), and III (solid radiographic fusion). Other radiologic and clinical outcomes were evaluated using the following parameters: vertebral slippage distance, disc height, subsidence, Oswestry Disability Index (ODI), and visual analogue scale (VAS). RESULTS Clinical outcomes demonstrated significant improvements in the VAS scores for back pain, leg pain, and ODI after surgery. Subsidence was present in 34 cases (35.4%) at 12 months postoperatively, which increased to 47.9% and reached 50.0% at 1.5 years and 2 years after surgery, respectively. The solid fusion rate after OLIF was 32.3% at 1 year, increased to 58.3% at 1.5 years, and reached 72.9% at 2 years. Radiographic pseudoarthrosis was 24.0% at 1 year, which decreased to 6.3% at 1.5 years and 3.1% at 2 years. CONCLUSION OLIF is a safe and effective surgical procedure for the treatment of degenerative lumbar diseases. The mBSF scale, which simultaneously evaluates both dynamic angles and bone bridge formation, offers great reliability for the radiological assessment of fusion. Moreover, OLIF using allografts and DBM, which is performed on one or 2 levels at L2-5, can achieve satisfactory fusion rates within 2 years after surgery.
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Affiliation(s)
- Sangseok Lee
- Department of Neurosurgery, Kyungpook National University Hospital, Daegu, Korea
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Jin Woo Jung
- Department of Neurosurgery, Kyungpook National University Hospital, Daegu, Korea
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Sang-Woo Lee
- Department of Neurosurgery, Kyungpook National University Hospital, Daegu, Korea
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Kyoung-Tae Kim
- Department of Neurosurgery, Kyungpook National University Hospital, Daegu, Korea
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Heum-Dai Kwon
- Department of Neurosurgery, Pohang Stroke and Spine Hospital, Pohang, Korea
| | - Subum Lee
- Department of Neurosurgery, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea
| | - Young San Ko
- Department of Neurosurgery, Keimyung University Dongsan Hospital, Keimyung University College of Medicine, Daegu, Korea
| | - Pius Kim
- Department of Neurosurgery, College of Medicine, Chosun University, Gwangju, Korea
| | - Dae-Chul Cho
- Department of Neurosurgery, Kyungpook National University Hospital, Daegu, Korea
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Daegu, Korea
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