human
What are the most common causes of a cracked knuckle?
assistant
The most common causes of a cracked knuckle include overuse, trauma, arthritis, and genetics. Overuse can cause stress to joints and tendons, which can lead to inflammation and swelling. Trauma such as a fall or direct blow to the hand can also cause damage to the joint. Arthritis is another potential cause of a cracked knuckle due to the breakdown of cartilage in the joint. Finally, genetic factors can play a role in causing a cracked knuckle as well.