If you twist your legs or feet, pointing away from the rest of the body in a position known as plantar flexion, your calf muscles can become shortened.
请教专家老师：pointing away from the rest of the body in a position known as plantar flexion这个目前分词短语在句子中的语法用途和中文意思如何翻译。
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If you twist yourlegs or feet, pointing away from the rest of the body in a position known asplantar flexion, your calf muscles can become shortened.
【剖析】句子总体是一个含有条件从句的复合句。
1. pointing awayfrom the rest of the body in a position known as plantar flexion，是目前分词短语，作 twist 的结果状语。
2. known asplantar flexion，是过去分词短语，作 position 的定语。= which is known as plantar flexion
【翻译】假如你扭曲你的腿或脚，指向离得远远的身体其他部位的一个被叫做跖屈的地方，那样，你的小腿肌肉就会缩短。