This kind represents a pure tendinous injury the place the extensor tendon is stretched or torn, but no bone is broken. The destruction happens on the comfortable tissue connecting muscle to bone, causing The shortcoming to straighten the fingertip without support. Symptoms might differ in intensity and presence, based on https://www.theorthopaedicandpainpractice.com/why-cant-i-straighten-the-tip-of-my-finger/