Understanding Interphalangeal Joints: Function, Types, and Conditions

Interphalangeal (IP) refers to the joints that connect the bones of the fingers and toes in the hand or foot. These joints are located between the phalanges, which are the bones of the fingers and toes. There are two types of interphalangeal joints: the distal interphalangeal (DIP) joint, which connects the bones of the fingers, and the proximal interphalangeal (PIP) joint, which connects the bones of the thumb.

Interphalangeal joints allow for flexion, extension, and rotation of the fingers and toes, enabling a wide range of movements such as grasping, gripping, and manipulating objects. They also play an important role in maintaining balance and stability during activities such as walking, running, and climbing.

Interphalangeal joints can be affected by various conditions such as osteoarthritis, rheumatoid arthritis, and injury, which can cause pain, stiffness, and limited mobility. Treatment options for interphalangeal joint problems may include physical therapy, medication, and in some cases, surgery.