《黄帝内经·灵枢·经筋》
足少阳胆经的经筋，起于足第四趾端，沿足背上行结聚于外踝，再沿着胫骨外侧，向上结聚在膝部的外缘。
足少阳之筋，起于小趾次趾，上结外踝，上循胫外廉，结于膝外廉。
The meridian of Foot Shaoyang Gallbladder Meridian originates from the end of the fourth toe, goes up along the back of the foot and gathers at the outer ankle, then goes up along the outer side of the tibia and gathers at the outer edge of the knee.