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MRI assessment of lumbar intervertebral disc degeneration with lumbar degenerative disease using the Pfirrmann
Li-Peng Yu1, Wen-Wu Qian, Guo-Yong Yin
1Department of Spine Surgery, The First Affiliated Hospital, Nanjing Medical University, Nanjing, Jiangsu, China.
Background:
To evaluate by MRI intervertebral disc degeneration in patients with lumbar degenerative disease using the Pfirrmann grading system and to determine whether Modic changes correlated with the Pfirrmann grades and modified Pfirrmann grades of disc degeneration.
Methods:
The clinical data of 108 surgical patients with lumbar degenerative disease were reviewed and their preoperative MR images were analyzed. Disc degeneration was evaluated using the Pfirrmann grading system. Patients were followed up and low back pain was evaluated using the visual analog scale (VAS) and the effect of back pain on the daily quality of life was assessed using Oswestry disability index (ODI).
Results:
Forty-four cases had normal anatomical appearance (Modic type 0) and their Pfirrmann grades were 3.77±0.480 and their modified Pfirrmann grades were of 5.81±1.006. Twenty-seven cases had Modic type I changes and their Pfirrmann grades were 4.79±0.557 and their modified Pfirrmann grades were 7.00±0.832. Thirty-six cases exhibited Modic type II changes and their Pfirrmann grades and modified Pfirrmann grades were 4.11±0.398 and 6.64±0.867, respectively. One case had Modic type III changes. Kruskal-Wallis test revealed significant difference in modified Pfirrmann grade among Modic type 0, I and II changes (P<0.01) but no significant difference between Modic type I and II changes (P>0.05). Binary regression analysis showed that Modic changes correlated most strongly with disc degeneration. Follow up studies indicated that the VAS and ODI scores were markedly improved postoperatively. However, no difference was noted in VAS and ODI scores among patients with different Modic types.
Conclusion:
Modic changes correlate with the Pfirrmann and modified Pfirrmann grades of disc degeneration in lumbar degenerative disease. There is no significant correlation between Modic types and surgical outcomes.
Insights
Modic changes correlate with disc degeneration severity in lumbar degenerative disease patients. However, Modic types do not predict surgical outcomes for low back pain relief.
Area of Science:
- Radiology
- Spine Surgery
- Orthopedics
Background:
- Lumbar degenerative disease affects many patients.
- MRI is crucial for diagnosing disc degeneration.
- Pfirrmann grading and Modic changes are key imaging findings.
Purpose of the Study:
- Evaluate intervertebral disc degeneration using MRI Pfirrmann grading.
- Determine the correlation between Modic changes and disc degeneration grades.
- Assess the relationship between Modic types and surgical outcomes.
Main Methods:
- Retrospective review of 108 surgical patients with lumbar degenerative disease.
- Preoperative MRI analysis using Pfirrmann grading system.
- Postoperative assessment of low back pain (VAS) and disability (ODI).
Main Results:
- Modic changes significantly correlated with Pfirrmann and modified Pfirrmann grades.
- Significant differences in modified Pfirrmann grades were observed among Modic types 0, I, and II.
- No significant difference in VAS and ODI scores was noted among patients with different Modic types post-surgery.
Conclusions:
- Modic changes are associated with the severity of disc degeneration in lumbar degenerative disease.
- Modic types do not correlate with surgical outcomes in terms of pain and disability.
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Herniated Intervertebral Disc l: Introduction
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