Fingers still can't bend after 3 weeks of surgical suture for tendon rupture of the back of hand.

Well, after routine suture of hand tendon rupture, it is recommended not to move the affected part in the early stage to prevent it from breaking again. After 3~4 weeks, we will start to do functional recovery exercise. However, due to individual differences, a few patients are inactive for a long time and have local adhesion. Depending on the situation, if you can't move the affected part with the healthy side at all, it may be stuck. It is recommended to go to the hospital for treatment. If you can move but can't be voluntary movement of the affected side, you need to do functional recovery exercise. My theory divides exercise into three stages. The first stage is adaptability. The practice is to move the affected side slightly with the healthy side, and then enter the mid-term exercise after the affected side adapts. The same is true when the healthy side moves the affected side, taking the pain generated when the affected side moves as the standard (within the normal physiological activity range). After a few days of exercise, you can do the later functional recovery exercise. At this stage, you should try to do only stretching and twisting exercises on the affected side, and do some daily exercises on the affected side. Attention: don't be impatient when exercising, and do overloaded exercise.