Unilateral anterior disc displacement (uADD) has been shown to affect the contralateral joints qualitatively. This study aims to assess the quantitative T2 values of the articular disc and retrodiscal tissue of patients with uADD at 1.5 Tesla (T). The study included 65 uADD patients and 17 volunteers. The regions of interest on T2 maps were evaluated. The affected joints demonstrated significantly higher articular disc T2 values (31.5 ± 3.8 ms) than those of the unaffected joints (28.9 ± 4.5 ms) (P < 0.001). For retrodiscal tissue, T2 values of the unaffected (37.8 ± 5.8 ms) and affected joints (41.6 ± 7.1 ms) were significantly longer than those of normal volunteers (34.4 ± 3.2 ms) (P < 0.001). Furthermore, uADD without reduction (WOR) joints (43.3 ± 6.8 ms) showed statistically higher T2 values than the unaffected joints of both uADD with reduction (WR) (33.9 ± 3.8 ms) and uADDWOR (38.9 ± 5.8 ms), and the affected joints of uADDWR (35.8 ± 4.4 ms). The mean T2 value of the unaffected joints of uADDWOR was significantly longer than that of healthy volunteers (P < 0.001). These results provided quantitative evidence for the influence of the affected joints on the contralateral joints.

单侧椎间盘前移（uADD）已被证明会对对侧关节产生定性影响。本研究旨在评估 uADD 患者关节盘和椎间盘后组织在 1.5 特斯拉 (T) 下的定量 T2 值。该研究包括 65 名 uADD 患者和 17 名志愿者。评估 T2 地图上的感兴趣区域。受影响关节的关节盘 T2 值 (31.5 ± 3.8 ms) 明显高于未受影响关节 (28.9 ± 4.5 ms) ( P < 0.001)。对于椎间盘后组织，未受影响的关节（37.8±5.8ms）和受影响的关节（41.6±7.1ms）的T2值显着长于正常志愿者的T2值（34.4±3.2ms）（ P <0.001）。此外，uADD 无复位 (WOR) 关节 (43.3 ± 6.8 ms) 的 T2 值在统计上比 uADD 有复位 (WR) (33.9 ± 3.8 ms) 和 uADDWOR (38.9 ± 5.8 ms) 的未受影响关节以及受影响的关节更高。 uADDWR 的关节（35.8 ± 4.4 ms）。 uADDWOR 未受影响关节的平均 T2 值显着长于健康志愿者（ P < 0.001）。这些结果为受影响关节对对侧关节的影响提供了定量证据。