Donati seam
The Donati seam (named after Mario Donati ), also called vertical backstitch seam or vertical mattress stitch, is a special type of seam used in medical sewing .
The thread is pierced on one side of the wound to be closed, cut out on the other side and pierced there closer to the edge of the wound, and then returned to the first side under the surface of the skin, pierced and knotted here over the skin. While the first stitch is made deeper below the skin tissue in order to achieve an adaptation of the wound edges in depth, the second stitch remains flat under the skin surface and within the skin. In this way, a more precise approximation of the wound edges in the skin area is also achieved. This stitch guidance with a backstitch at a lower depth characterizes the Donati seam, which is therefore also called the vertical backstitch seam in contrast to the similar horizontal backstitch seam . The Italian surgeon Mario Donati (1879–1946) is the first to describe this sewing technique.
The differentiated thread guidance of the Donati suture gives the suture a great deal of stability against tearing out the thread, which is particularly useful when the edges of the wound can only be brought together under tension. A disadvantage of the method is the total of four stitch channels in a seam, i.e. twice as many as with the classic single button seam . A modification of the Donati suture is the Allgöwer suture , in which the needle is returned intracutaneously under the epidermis with a round stitch, so that only two puncture channels reach the surface.
Web links
- Single button and Donati seam and single button and Donati seam (left-handed version). Teaching videos from the University Medical Center Göttingen
