Hesper Tobias, Miese Falk R, Hosalkar Harish S, Behringer Michael, Zilkens Christoph, Antoch Gerald, Krauspe Rüdiger, Bittersohl Bernd
University Düsseldorf, Medical Faculty, Department of Orthopaedics, Düsseldorf, Germany.
University Düsseldorf, Medical Faculty, Department of Diagnostic and Interventional Radiology, Düsseldorf, Germany.
Eur J Radiol. 2015 Feb;84(2):284-9. doi: 10.1016/j.ejrad.2014.11.021. Epub 2014 Dec 3.
To study the effect of repetitive joint loading on the T2(*) assessment of knee joint cartilage.
T2() mapping was performed in 10 non-professional marathon runners (mean age: 28.7±3.97 years) with no morphologically evident cartilage damage within 48h prior to and following the marathon and after a period of approximately four weeks. Bulk and zonal T2() values at the medial and lateral tibiofemoral compartment and the patellofemoral compartment were assessed by means of region of interest analysis. Pre- and post-marathon values were compared.
There was a small increase in the T2() after running the marathon (30.47±5.16ms versus 29.84±4.97ms, P<0.05) while the T2() values before the marathon and those after the period of convalescence were similar (29.84±4.97ms versus 29.81±5.17ms, P=0.855). Regional analyses revealed lower T2(*) values in the medial tibial plateau (P<0.001).
It appears that repetitive joint loading has a transient influence on the T2() values. However, this effect is small and probably not clinically relevant. The low T2() values in the medial tibial plateau may be related to functional demand or early cartilage degeneration.
研究重复性关节负荷对膝关节软骨T2（*）评估的影响。
对10名非专业马拉松运动员（平均年龄：28.7±3.97岁）进行T2（）成像，在马拉松比赛前48小时内、比赛后以及大约四周的恢复期后，这些运动员均无形态学上明显的软骨损伤。通过感兴趣区分析评估内侧和外侧胫股关节腔以及髌股关节腔的整体和分区T2（）值。比较马拉松前后的值。
马拉松赛后T2（）略有增加（30.47±5.16毫秒对29.84±4.97毫秒，P<0.05），而马拉松赛前和恢复期后的T2（）值相似（29.84±4.97毫秒对29.81±5.17毫秒，P=0.855）。区域分析显示内侧胫骨平台的T2（*）值较低（P<0.001）。
重复性关节负荷似乎对T2（）值有短暂影响。然而，这种影响很小，可能与临床无关。内侧胫骨平台较低的T2（）值可能与功能需求或早期软骨退变有关。
