Magnetic resonance imaging (MRI) underestimates presence and size of knee osteophytes using computed tomography (CT) as a reference standard
Authors' conclusion
MRI underestimates presence of osteophytes in all three knee compartments.
Study context
- Population
- Patients with primary knee OA in the SEKOIA trial with available MRI and CT data (mean age 62.9 ± 7.5 years)1,332 locations evaluated
- Participants
- 74 patients
- Comparison
- MRI vs CT for knee osteophytes
- Outcome
- Diagnostic performance of MRI for osteophytes in all three knee compartments (PFJ, medial TFJ, lateral TFJ), CT as reference
- Follow-up
- Baseline
Methodological detailssecondary analysis of SEKOIA trial baseline data, CT as reference standard, modified MRI Osteoarthritis Knee Score (MOAKS) scoring
- Secondary analysis of SEKOIA trial baseline data
- CT as reference standard
- Modified MOAKS scoring
Performance
As reported in the abstract
Osteophytes detected by MRI among CT-defined osteophytes, by compartment
PFJ: MRI detected 141 (72%) of 197 CT-defined osteophytes (OPs); w-kappa
0.58 (0.52-0.65) (95% CI)
Medial TFJ: MRI detected 178 (81%) of 219 CT-OPs; w-kappa
0.58 (0.51-0.64) (95% CI)
Lateral TFJ: MRI detected 84 (70%) of 120 CT-OPs; w-kappa
0.58 (0.50-0.66) (95% CI)
Original publication
MRI underestimates presence and size of knee osteophytes using CT as a reference standard. Osteoarthritis Cartilage. Published 14 February 2023. doi:10.
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