The os trigonum is an accessory bone of the foot, locates at the posterolateral tubercle of the talus, and occures in about 7% of population.
摘要附三角骨位于距骨
后外侧节，是脚部的附属骨
，
现于百分七的正常
。
The os trigonum is an accessory bone of the foot, locates at the posterolateral tubercle of the talus, and occures in about 7% of population.
摘要附三角骨位于距骨后外侧节，是脚部的附属骨，现于百分七的正常。
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