Anatomy of aging characteristics of orbit-malar-fold / 中华医学美学美容杂志

ABSTRACT

Objective To identify the anatomical basis for aging orbit-malar fold forming orbitmalar groove and its underlying mechanism.Methods Thirteen cadavers (26 hemifaces) were dissected in this study (9 male and 4 female heads).All specimens were fixed in 10％ formalin,with age ranges from 22 to 78 years.The lateral orbital region was dissected in layers by mieroinsrument using 10 X loupe magnification,especially at the palpebral and the lateral orbital part,and then the anatomy layer was described; the lateral orbital thickening (LOT) was performed carefully to evaluate whether there were multiple anatomical contributions to anatomy.Anatomic observations were systematically recorded,sketched,and photographically documented.Results The lateral orbital layers included skin,subcutaneous adipose tissue,orbicularis oculi muscle,middle temporal fascia,and periosteum.The lateral orbital thickening was a triangular condensation of fascia,which extended over the lateral orbital rim onto the adjacent medial tem~ral fascia,the lateral orbital thickening was measured (9.28 ±0.45) mm in transverse width from Vertex triangle to lateral canchal,the inner part of the LOT sanwiched between orbibularis and obital septum,which consisted of upper lid and lower lid part,the lower lid part presented transverse V shape,the top part of the transverse V was adhesive to fascial tissue over tarsal plate.The distance to lateral canthus angular was 21.69-37.21 mm,and the under part was adhesive to low orbital rim the low arm distance to lateral canthus angular was (13.55 ±0.52) mm.Vertex of.V to lateral canthus angular vertical distance was (11.35±0.27) mm.Conclusions The reason why aging orbit-malar fold forms orbital-malar groove is the atrophy of the subcutaneous adipose tissue and the middle temporal fascia fat.