It occurs as a result of blows to the most extreme joint of the finger. The tendon (extensor tendon) is injured where it is attached to the base of distal phalanx. It is mostly observed after closed injuries that no cut is present on the finger.
When the patient was told to straighten the finger, he/she can not do this. But the finger can be brought to the straight position by the other hand or by the doctor.(Figure 1)
In some cases, a small bone fracture is accompanied an seen by Xray (Figure 2)
Early cold application and nonsteroidal antiinflammatory drugs will be beneficial for pain relief. (Figure 3).
In patients who do not have bone fractures, a mallet finger splint obtained from ortopaedic material dealer can be worm without removing it from the finger for 2 months.