Introduction and purpose: loss of lordosis is an important factor in causing degeneration of the spine. There are several treatment methods for the correction of segmental lumbar lordosis. In this study, correction of lumbar lordosis in patients undergoing posterior interbody lumbar fusion was compared using peek cage and allograft impaction.
Methods: In this clinical trial, the correction of segmental lumbar lordosis after Posterior Interbody Lumbar Fusion was investigated in patients referred to Firuzgar Hospital in 2001. A total of 21 patients were randomly evaluated in two groups: treatment with impaction allograft (10 patients) and treatment using Peek cage (11 patients). correction of lumbar lordosis before and day after surgery, as well as pain intensity and side effects after 2 weeks of surgery were investigated in patients. The results were analyzed using SPSS version 25 software.
Results: The median age of the patients was 56 years and 38.1% were male. The results showed that in both impaction allograft (P<0.001) and PEEK cage (P<0.0001), lumbar lordosis increased significantly after surgery compared to before. The percentage of changes in the lordosis angle in impaction allograft method was significantly higher than PEEK cage (P=0.01). There was no significant difference in pain intensity after surgery in the two methods. No serious side effects were reported in any of the patients in the two groups.
Conclusion: Impaction allograft provides more correction of lumbar lordosis compared to PEEK cage in patients undergoing posterior Interbody lumbar fusion.