Furrow Indentations

The groove on the dorsal surface of the finger in a typical place consists of two radially directed folds and resembles an indentation mark. It occurs due to strong (lateral, dorsoventral and radial) pressure on the thumb of an outstretched hand. There can be 2 or more grooves; they are located almost exclusively on the palmar surface. They can be of different sizes and depths, as well as different shapes: in the form of parallel lines running from the tip of the finger to the wrist, or in the form of a narrow slit in the center of the cross section of the finger. Most often, the grooves are up to 0.5 cm thick; There are shallow grooves - up to 2 mm, deep - more than 0.7 cm. There are often several traces of old damage, located separately from each other. Their bluish coloration under the influence of blood is quite common. The main function of this groove is to maintain the natural curve of the bones of the thumb. If a person works primarily at a computer, this would be the best option. You can often find the following picture on fingers with a dominant thumb - these are the consequences of an injury. Symptoms that grooves can lead to: calluses that will form on the finger under pressure, in areas where tendons and skin have been stretched, and