Hautlinien
Hautlinien, also known as Langer's lines or cleavage lines, are lines or furrows on the skin that correspond to the natural orientation of collagen fibers in the dermis. These lines are not random but follow specific patterns across the body. They are most noticeable on the face and neck, where they are often referred to as wrinkle lines. The study and understanding of hautlinien are particularly important in surgical procedures, especially plastic and reconstructive surgery. Surgeons aim to make incisions parallel to these lines to minimize tension on the wound, promote better healing, and reduce scarring. Incisions made perpendicular to hautlinien tend to result in more prominent and wider scars.
The direction of hautlinien is influenced by the underlying muscles of facial expression and the overall structure