Method: One hundred and twenty-six patients with deep burn injury in lower extremity(involving skin of popliteal fossa) were randomly divided into control group(n=62) and improved group(n=64).

• 方法：126例下肢深度烧伤（包括腘窝周围皮肤烧伤）患者随机分为对照组(62例)和改进组（64例）。