“外翻”用英语怎么说？

他眼睑的外翻很严重.The eversion of his eyelids is serious.肘部 、 飞节和足爪既不向内弯,也不向外翻.Elbows, hocks and feet turn neither in nor out.上唇外翻,往上提,往外突出.Curl upper lip up and raise and protrude upper lip....