Mid-term Clinical Outcomes of Stand-alone Posterior Interbody Fusion with Rectangular Cages: A 4-year-minimum Follow-up
Sixty one year-old lady suffered from her both buttock and leg pain for 20 years. Her symptom aggravated since 2 years before admission, and diagnosed to have spinal stenosis at lumbar 4-5 level. She underwent discectomy with OIC cage insertion (). The Disc height was improved from 8.3mm to 11 mm after surgery. After a year, height slightly decreased to 9 mm with suspicion of subsidence and the height maintained in 8 mm during 8 years of follow-up but had Grade I spondylolisthesis. Segmental lordosis before surgery was 15° which have decreased to 13.3° after surgery and increased to 18° in 8 years of follow-up. Total lordosis before surgery was measured as 44.8° which decreased in 42° after surgery and gradually increased to 50° after 8 years. Her VAS score before surgery was 8 for back pain and 5 for leg pain which decreased to score 0 for both. With confidence, excellent result in Odom's criteria.