Interphalangeal is a term used to describe a joint that occurs between two phalanges, which are the bones that make up fingers and toes. Some synonyms for interphalangeal include finger joint, toe joint, and phalangeal joint. These joints are critical because they provide the mobility necessary for fingers and toes to move and perform tasks like grasping and walking. Problems with interphalangeal joints can lead to conditions like arthritis, which can severely impact mobility and quality of life. Therefore, it is essential to seek medical attention immediately in case of any unique movements or pain experienced in these joints.