Because the scar will shrink, that is, it will become shorter and its elasticity will be poor, so if the scar is vertical, it will definitely affect the joint function to varying degrees. So you can't make a vertical incision when you do hand surgery.

Your current problem may not be very effective by "hard pulling" the skin. "Hard pulling" the skin will cause the scar tissue to rupture again and the scar will be aggravated.

Suggestion:

If it does affect the appearance or function, you can do scar release. This process is to make the original longitudinal scar oblique. It can solve the joint function problem, but it may not be satisfactory in appearance.