Although the low abdominal skin flap could provide larger area tissue to repair wounds, the reconstructed thumb-index web can't obtain an ideally needed functional and esthetic result.
腹部皮瓣可提供较大面积修复组织，供区隐蔽，但修复后虎口外形和功能欠佳。
2
Now, a study of chick embryos shows that birds do indeed have thumb, index, and middle "fingers" in their wings.
现在，一份对鸡胚胎的研究，鸟类的翅膀的趾中确实有类似于人类拇指、食指和中指的趾的分化。
3
Use your thumb and index fingers to gently massage your ear lobes in small circles.