Recovery of the menisci and articular cartilage of runners after cessation of exercise - Additional aspects of in vivo investigation based on 3-dimensional magnetic resonance imaging
Recovery of the menisci and articular cartilage of runners after cessation of exercise - Additional aspects of in vivo investigation based on 3-dimensional magnetic resonance imaging
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DOI：
10.1177/0363546507313093
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发表时间：
2008-05-01
影响因子：
4.8
通讯作者：
Imhoff, Andreas B.
中科院分区：
文献类型：
--
作者：
Kessler, Markus A.;Glaser, Christian;Imhoff, Andreas B.
背景资料：目前尚不清楚长跑是否对关节健康产生有害影响;因此，本研究旨在检查马拉松运动员膝关节因负荷而发生变化的恢复率。假设：胫骨、髌骨和半月板软骨体积能够从停止后立即重复负荷造成的变化中充分恢复。研究设计：对照实验室研究。方法：20名男性运动员的膝盖进行了研究（平均年龄，38 - 14岁）。参与者绕着预先确定的精确测量的路线跑20公里。软骨体积测量磁共振成像前运行（运动前休息60分钟），运行后立即（3分钟延迟），并经过1小时的恢复期。结果：20公里运行后，有一个显着的短暂减少软骨体积。休息1小时后，髌骨（-2.1%）、胫骨（-1.2%）、外侧半月板（-3.2%）或内侧半月板（-5.9%）的软骨体积没有显著减少。然而，所记录的值为arrhoci的边界，这表明半月板体积的恢复滞后于关节软骨。结论：我们的数据表明一个明确的趋势，迅速恢复的软骨和arrhocal卷在膝盖。这项研究的结果导致的假设，软骨和骨关节能够很好地适应由运行引起的负荷。调查更微妙的变化将需要更具体的磁共振成像技术，包括T2加权映射和T1加权rho序列，以评估软骨biochemic.Clinical Relevance：关节结构进行了调查，一般的磁共振成像水平，并发现恢复迅速，使运动后可以继续很短的时间内没有保留。
Background: It is still unclear whether long-distance running has a deleterious effect on joint health; therefore, this study was undertaken to examine the rate of recovery from alterations occurring at the knee joint in marathon runners due to loading.Hypothesis: Tibial, patellar, and meniscal cartilaginous volumes are able to recover adequately from changes due to repeated loading immediately after cessation.Study Design: Controlled laboratory study.Methods: Twenty knees of male athletes were studied (mean age, 38 14 years). The participants ran 20 km around a predetermined and precisely measured course. Cartilaginous volume was measured by magnetic resonance imaging before the run (60-min rest before exercise), immediately after the run (3-min delay), and after a recovery period of 1 hour.Results: After the 20-km run, there was a significant transient decrease in cartilage volume. After 1 hour of rest, no significant reduction of cartilage volume was measured for the patella (-2.1 %), the tibia (-1.2%), the lateral meniscus (-3.2%), or the medial meniscus (-5.9%). However, the values recorded for the menisci were borderline, which indicates that recovery of meniscus volume lags behind that of articular cartilage.Conclusion: Our data indicate a clear tendency toward rapid recovery of the cartilaginous and meniscal volumes at the knee. The results of this study lead to the assumption that the cartilage and the menisci are well able to adapt to the loads caused by running. Investigation of more subtle changes would require more specific magnetic resonance imaging techniques, including T2-weighted mapping and T1-weighted rho sequences, to assess cartilage biochemistry.Clinical Relevance: The articular structures were investigated on a general magnetic resonance imaging level and were found to recover rapidly so that exercise could be continued after a short time without reservation.