Shiota Junki, Momma Daisuke, Yamaguchi Takayoshi, Iwasaki Norimasa
Faculty of Medicine and Graduate School of Medicine, Department of Orthopaedic Surgery, Hokkaido University, Sapporo, Japan.
Center for Sports Medicine, Hokkaido University Hospital, Sapporo, Japan.
Orthop J Sports Med. 2020 Nov 19;8(11):2325967120963085. doi: 10.1177/2325967120963085. eCollection 2020 Nov.
The distribution pattern of subchondral bone density is considered to accurately reflect the stress distribution over a joint under long-term physiologic loading. The biomechanical characteristics of the surface of the ankle joint in soccer players can be determined by measuring this distribution pattern under long-term loading.
To evaluate the distribution of subchondral bone density across the ankle joint in soccer players and to determine the effects of soccer activities, including kicking motion, on the ankle joint surface under long-term loading conditions by computed tomography (CT) osteoabsorptiometry (CTOAM).
Cross-sectional study; Level of evidence, 3.
CT imaging data were obtained from both ankles of 10 soccer players (soccer group) and 10 nonathletic volunteers (control group). The distribution patterns of subchondral bone density across the articular surface of the ankle joints were assessed by CTOAM. Quantitative analysis was performed of the locations and percentages of high-density areas on the articular surface.
Stress distribution patterns over the ankle joint differed between the soccer players and controls. In the soccer players, the high-density areas were found in the anterior part of the distal tibia and proximal talus as well as the distal fibula. The percentages of high-density areas were greater in the soccer players compared with controls ( < .0001).
Stress distribution over the articular surface of the ankle joint was affected by soccer activities. A high stress concentration was seen in soccer players in the anterior part of the tibia and talus and in the fibula; such excessive stress may lead to anterior impingement.
软骨下骨密度的分布模式被认为能准确反映关节在长期生理负荷下的应力分布情况。通过测量足球运动员踝关节表面在长期负荷下的这种分布模式，可以确定其生物力学特征。
通过计算机断层扫描（CT）骨吸收测量法（CTOAM）评估足球运动员踝关节软骨下骨密度的分布，并确定足球活动（包括踢球动作）在长期负荷条件下对踝关节表面的影响。
横断面研究；证据等级，3级。
从10名足球运动员（足球组）和10名非运动员志愿者（对照组）的双踝关节获取CT成像数据。采用CTOAM评估踝关节关节面软骨下骨密度的分布模式。对关节面上高密度区域的位置和百分比进行定量分析。
足球运动员和对照组踝关节的应力分布模式不同。在足球运动员中，高密度区域位于胫骨远端前部、距骨近端以及腓骨远端。与对照组相比，足球运动员中高密度区域的百分比更高（P <.0001）。
足球活动会影响踝关节关节面的应力分布。足球运动员的胫骨和距骨前部以及腓骨出现较高的应力集中；这种过度应力可能导致前方撞击。
