The finger tip is one of the most commonly injured areas of the upper extremity because we use our finger tips in so many daily activities. Your finger tip can be injured in a variety of different ways, including being crushed by a door, hit with a hammer, getting stuck under a heavy object, or cut with a knife. While some finger tip injuries may be minor, others can be more severe. You can injure the bone, nailbed, tendons or even the nerve endings, which allow you to have sensation in the finger tips. Here's how to treat a finger tip injury, depending on the severity
Source: Handcare (ASSH)