Steven Liew, et al. Consensus on Changing Trends, Attitudes, and Concepts o[[f]] Asian Beauty[J]. Aesthetic Plast Surg, Published online: September 2015
Yz A , B[[f]] B , Jl C , et al. A multi-layered model of human skin elucidates mechanisms of wrinkling in the forehead[J]. Journal of the Mechanical Behavior of Biomedical Materials, 105.
Zo€llner et al., 2013;Leyva-Mendivilet al., 2015
Contet-Audonneauet al.,1999;Oba and Edwards, 2006;Lee et al., 2008;Z llner et al.,2013;Kruglikov and Scherer, 2018;Pan et al., 2019
刚度及弹性模量的改变造成皮肤滑动度增大
弹性的各层模量服从
E > E
> E
> E
> E
SC
RD
VE
PD HD
(Kruglikov and Scherer, 2018)
Yz A , B[[f]] B , Jl C , et al. A multi-layered model of human skin elucidates mechanisms of wrinkling in the forehead[J]. Journal of the Mechanical Behavior of Biomedical Materials, 105.
Invasive Procedures: An Anatomic Guideline [[f]]or Ultrasonographic-Guided Procedures. Springer; 2021:25-73.
松弛的关键因素:组织胶原支撑结构的破坏
真皮胶原纤维网
真
皮
脂肪细胞胶原网格
浅 脂
肪
脂肪室纤维间隔
S M A
S
筋膜胶原纤维网
韧
带
韧带胶原纤维束
胶原纤维构成了面部网状支撑结构
皮肤松弛的关键因素:胶原蛋白的流失
由于年龄引起皮肤中胶原蛋白含量的改变
皮肤中胶原蛋白含量在30岁前到达高峰后开始下降
胶
原
蛋
白
含
量
由于年龄引起皮肤胶原蛋白含量的改变
松弛的关键因素:胶原蛋白的流失
真皮
浅脂肪
筋膜
韧带
77%
40%
65%-90%
厚度
支撑力
张力
拉力
张力
机械强度
支撑力
胶原蛋白的流失不仅造成减容,更造成松弛
皮肤松弛-真皮层变薄
l 胶原纤维:皮肤最重要的结构蛋白,占真皮干重量的≥80%,是真皮“容量”的核心,为皮
肤提供力量和弹性
l 面容衰老时:皮肤真皮胶原纤维断裂+再生活性降低,皮肤坍塌、厚度弹性下降
红色:胶原纤维 绿色:弹性纤维
Micheels P , Besse S , Sarazin D , et al. Quanti[[f]]ying Depth of Injection of Hyaluronic Acid in the Dermis: Data from Clinical, Laboratory, and Ultrasound Settings.[J]. Journal of Drugs in Dermatology,
Dario Bertossi, Giamaica Conti, Paolo Bernardi, et al. Classi[[f]]ication of fat pad of the third medium of the face. Aesthetic Medicine. 2015 Oct-Dec;1(3):103-09.
皮肤松弛-韧带
• 面部的韧带由胶原蛋白(干重的65%-90%)、
蛋白聚糖、糖胺聚糖(GAG)和水组成。
• 蛋白质的正确相互作用以及束内润滑提供了
适当的机械能力。
• 韧带的稳定性被认为是每个脂肪室(浅层或
深层)内的脂肪的吊床。
• 韧带的衰老表现出疲劳和弯曲,从而促进相
应脂肪腔室的下垂,这可以观察到老年人的
下颌畸形(黑色圆圈)
Coto[[f]]ana S, Fratila AA, Schenck TL, Redka-Swoboda W, Zilinsky I, Pavicic T. The Anatomy of the Aging Face: A Review. Facial Plast Surg. 2016 Jun;32(3):253-60. doi: 10.1055/s-0036-
Suwanchinda A, Webb KL, Rudolph C, Hladik C, Custozzo A, Muste J, Schalet G, Hamade H, Smith MP, Frank K, Patel A, Coto[[f]]ana S. The posterior temporal supraSMAS minimally invasive lifting technique using soft-tissue
Suwanchinda A, Webb KL, Rudolph C, Hladik C, Custozzo A, Muste J, Schalet G, Hamade H, Smith MP, Frank K, Patel A, Coto[[f]]ana S. The posterior temporal supraSMAS minimally invasive lifting technique using soft-tissue