Our tendons, which move the thumbs up and away from the other fingers, pass under a tunnel near the base of the thumb on the wrist. The thickening and stiffness in this tunnel and the swelling in the sheaths of the tendons make it difficult to move the tendons under the tunnel during thumb movements. This condition, which arises with pain and tenderness in the wrist, is first referred to by the name of the Swiss surgeon (Fritz de Quervain). It is usually observed after forced and repetitive movements. In particular, the position of the hand taken by new mothers when carrying their babies; The effects of hormonal fluctuations during pregnancy and lactation trigger the emergence of this condition. De quervain tenosynovitis can also be seen after weight training with previous wrist fractures, traumas, and unusual weight.
