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THE ROLE OF MOAKS SCORE IN DIAGNOSING THE GRADING OF KNEE OSTEOARTHRITIS ON MAGNETIC RESONANCE IMAGING
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Abstract
Subjects and Methods: A cross-sectional descriptive study was conducted on 50 patients radiographically diagnosed with knee osteoarthritis who underwent 3.0T MRI at Viet Duc Friendship Hospital from March 2024 to June 2024. Results: The mean age of the patients was 62.4 ± 6.18 years. On X-ray, knee OA was classified as grade 1 in 9 patients (18%), grade 2 in 20 patients (40%), and grade 3 in 21 patients (42%), with no grade 4 cases. On 3.0T MRI, the mean total MOAKS was 38.6 ± 22.53 points (range: 9–104). The MOAKS also increased with OA severity: 17.7 ± 6.98 points for grade 1, 28.8 ± 12.72 points for grade 2, and 56.8 ± 20.7 points for grade 3 (p < 0.01). For grade 3 knee OA, the cut-off score was 40 points, with a sensitivity (Sn) of 81% and specificity (Sp) of 89.7% (AUC = 0.915, 95% CI: 0.837–0.992). For grade 2 knee OA, the cut-off score was 30 points, with a specificity (Sp) of 100% and sensitivity (Sn) of 68.3% (AUC = 0.878, 95% CI: 0.781–0.975), indicating excellent diagnostic accuracy. Conclusions: The MOAKS can accurately diagnose the severity of knee osteoarthritis.
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Keywords
Knee osteoarthritis, Magnetic Resonance Imaging, MRI, MRI osteoarthritis knee scores
References
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