What to do if i jammed or fractured my finger?

Ice : Ice is a great start. A second thing is splinting. If you are swollen even if you do not have a fracture a bruise to the joint will casue swelling in the joint. When that happen the joint tends to stay bent at about 45 degrees because the joint capsule's maximum volume is at about that degree of bending. The swollen tissue and fluid "pushes" the joint into that position if you dont splint and swellling is severe it could lead to a contracture. If you have minimal swelling and can fully extend your finger and its just a little stiff at the very end of flexion then you need not worry about losong extension but have to focus on bendong all of this is for a true jammed finger, which I am defining as a brusied or contused finger or a joint that gets "jammed" and bruised. This is not the same for a partial or complete ligament injury, a volar plate injury, a small avulsion fracture, a more severe fracture, an intrarticular fracture etc. The principles are the same but the treatment and folow up are different the problem is that many times xrays are not taken or if they are one is told that there is just a "sprain" and the range of these injuries from simple bruise to severe ligament injury, to tendon rupture to intrasrticular fracture is extensive. So heed my general advice for any jammed finger but if it takes more than a few days to feel better, get evaluated.