Department of Radiology, Stanford University, Stanford, California, USA.
Musculoskeletal Research Laboratory, VA Palo Alto Healthcare System, Palo Alto, California, USA.
J Magn Reson Imaging. 2021 Sep;54(3):840-851. doi: 10.1002/jmri.27610. Epub 2021 Mar 24.
Injuries to the articular cartilage in the knee are common in jumping athletes, particularly high-level basketball players. Unfortunately, these are often diagnosed at a late stage of the disease process, after tissue loss has already occurred.
PURPOSE/HYPOTHESIS: To evaluate longitudinal changes in knee articular cartilage and knee function in National Collegiate Athletic Association (NCAA) basketball players and their evolution over the competitive season and off-season.
Longitudinal, multisite cohort study.
Thirty-two NCAA Division 1 athletes: 22 basketball players and 10 swimmers.
FIELD STRENGTH/SEQUENCE: Bilateral magnetic resonance imaging (MRI) using a combined T and T magnetization-prepared angle-modulated portioned k-space spoiled gradient-echo snapshots (MAPSS) sequence at 3T.
We calculated T and T relaxation times to compare compositional cartilage changes between three timepoints: preseason 1, postseason 1, and preseason 2. Knee Osteoarthritis Outcome Scores (KOOS) were used to assess knee health.
One-way variance model hypothesis test, general linear model, and chi-squared test.
In the femoral articular cartilage of all athletes, we saw a global decrease in T and T relaxation times during the competitive season (all P < 0.05) and an increase in T and T relaxation times during the off-season (all P < 0.05). In the basketball players' femoral cartilage, the anterior and central compartments respectively had the highest T and T relaxation times following the competitive season and off-season. The basketball players had significantly lower KOOS measures in every domain compared with the swimmers: Pain (P < 0.05), Symptoms (P < 0.05), Function in Daily Living (P < 0.05), Function in Sport/Recreation (P < 0.05), and Quality of Life (P < 0.05).
Our results indicate that T and T MRI can detect significant seasonal changes in the articular cartilage of basketball players and that there are regional differences in the articular cartilage that are indicative of basketball-specific stress on the femoral cartilage. This study demonstrates the potential of quantitative MRI to monitor global and regional cartilage health in athletes at risk of developing cartilage problems.
2 Technical Efficacy Stage: 2.
膝关节的关节软骨损伤在跳跃运动员中很常见，尤其是高水平的篮球运动员。不幸的是，这些通常在疾病过程的晚期诊断，在组织丢失已经发生之后。
目的/假设：评估美国大学体育协会（NCAA）篮球运动员的膝关节关节软骨和膝关节功能的纵向变化，以及他们在比赛季节和休赛期的演变。
纵向、多站点队列研究。
32 名 NCAA 一级运动员：22 名篮球运动员和 10 名游泳运动员。
现场强度/序列：使用 3T 下的联合 T 和 T 磁化准备角度调制部分空谱扰相梯度回波快照（MAPSS）序列进行双侧磁共振成像（MRI）。
我们计算了 T 和 T 弛豫时间，以比较三个时间点（季前赛 1、季后赛 1 和季前赛 2）之间的组成性软骨变化。膝关节骨关节炎结局评分（KOOS）用于评估膝关节健康。
单向方差模型假设检验、广义线性模型和卡方检验。
在所有运动员的股骨关节软骨中，我们在比赛季节看到 T 和 T 弛豫时间的全局下降（所有 P<0.05），在休赛期看到 T 和 T 弛豫时间的增加（所有 P<0.05）。在篮球运动员的股骨软骨中，前区和中区分别在比赛季节和休赛期后具有最高的 T 和 T 弛豫时间。与游泳运动员相比，篮球运动员在每个领域的 KOOS 测量值都明显较低：疼痛（P<0.05）、症状（P<0.05）、日常生活功能（P<0.05）、运动/娱乐功能（P<0.05）和生活质量（P<0.05）。
我们的结果表明，T 和 T MRI 可以检测到篮球运动员关节软骨的显著季节性变化，并且在股骨软骨中存在与篮球特异性压力相关的关节软骨的区域差异。这项研究表明，定量 MRI 有可能监测有发生软骨问题风险的运动员的整体和局部软骨健康。
2 技术功效阶段：2。
