Cooper ligament passed the superficial fascia and fixed the mammary gland between the skin and the pectoralis fascia. Some surrounding breast ligaments joined in the combinations of the superficial layer and the deep layer of the superficial fascia. Cooper韧带穿浅筋膜把乳腺固定于皮肤与胸肌筋膜,且有部分乳腺周缘韧带加入浅筋膜浅深两层融合处。