Association of Diabetes Mellitus and Biochemical Knee Cartilage Composition Assessed by T-2 Relaxation Time Measurements: Data From the Osteoarthritis Initiative

作者：Chanchek Nattagan; Gersing Alexandra S^*; Schwaiger Benedikt J; Nevitt Michael C; Neumann Jan; Joseph Gabby B; Lane Nancy E; Zarnowski Julia; Hofmann Felix C; Heilmeier Ursula; McCulloch Charles E; Link Thomas M

来源：Journal of Magnetic Resonance Imaging, 2018, 47(2): 380-+.

DOI：10.1002/jmri.25766

• knee osteoarthritis
• diabetes
• cartilage imaging
• magnetic resonance imaging

Purpose: To investigate the association of the presence and severity of diabetes mellitus (DM) with articular cartilage composition, using magnetic resonance imaging (MRI)-based T-2 relaxation time measurements, and structural knee abnormalities.
Materials and Methods: In the Osteoarthritis Initiative 208, participants with DM (age 63.0 8.9 years; 111 females) and risk factors for osteoarthritis (OA) or mild radiographic tibiofemoral OA (Kellgren-Lawrence [KL] grade 2) were identified and group-matched with 208 controls without DM (age 63.3 +/- 9.1 years; 111 females). Subjects with diabetes-related renal or ophthalmological complications or insulin treatment at baseline (n = 50) were defined as severe DM. 3T MR images of the right knee were assessed for articular cartilage T-2, including texture and laminar analyses derived from the patella, medial, and lateral femur and tibia and for structural abnormalities using the modified whole-organ magnetic resonance imaging score (WORMS). Clustered linear regression analyses were used to assess associations of DM with MRI findings.
Results: DM subjects had significantly higher cartilage T-2 in the patella (mean difference 0.92 msec [95% confidence interval (CI) 0.79, 1.06]; P = 0.001) and medial femur (mean difference 0.36 msec [95% CI 0.27, 0.81]; P = 0.006) compared to controls. Averaged over all compartments, DM subjects showed significantly higher texture parameters (variance, P = 0.001; contrast, P = 0.002; entropy, P < 0.001). Subjects with severe DM additionally showed higher T-2 in the medial tibial deep and superficial layers (P = 0.011 and P = 0.041) compared to controls. No significant differences in cartilage, meniscus, and overall WORMS were found between the groups (P > 0.05).
Conclusion: In comparison to nondiabetic controls, cartilage in DM subjects showed higher and more heterogeneous cartilage T-2 values, indicating increased articular cartilage degeneration. This affected even more compartments in subjects with severe DM.

• 出版日期2018-2
• 单位UC Davis