What are signs and symptoms of a ruptured tendon in your hand?

Lost function, pain: Tendons in your hand control movement of the fingers. If you ruptured your tendon, you will generally lose function of the finger it controls or at least develop some weakness, possibly pain and swelling.

Decreased motion: Particularly the ability to voluntarily actively move an isolated finger joint or a change in the resting position or posture of the hand or wrist could mean a tendon rupture. The exact mechanics of course vary by location within the hand. A tendon rupture nay be sudden or gradual from attrition and may or may not be painful depending upon the mechanism . Local swelling may precede or follow.