Interphalangeal joints of foot

Interphalangeal Joints of the Foot

The Interphalangeal Joints of the Foot are hinge joints located between the phalangeal bones of the foot. They are analogous to the Interphalangeal joints of the hand and are similarly classified into proximal and distal interphalangeal joints.

Interphalangeal joints of the foot.

Anatomy

The interphalangeal joints of the foot are formed by the articulation of the phalanges. Each toe, except the big toe, has two interphalangeal joints - a proximal interphalangeal joint (PIP) and a distal interphalangeal joint (DIP). The big toe has only one interphalangeal joint, which is simply referred to as the interphalangeal joint.

Proximal Interphalangeal Joints

The proximal interphalangeal joints are the joints in the foot located closest to the ankle. They are formed by the connection of the proximal and middle phalanges.

Distal Interphalangeal Joints

The distal interphalangeal joints are the joints in the foot located closest to the tip of the toes. They are formed by the connection of the middle and distal phalanges.

Function

The interphalangeal joints of the foot allow for flexion and extension of the toes, which is crucial for maintaining balance, walking, running, and jumping.

Clinical Significance

Conditions such as arthritis, gout, and bunions can affect the interphalangeal joints of the foot, causing pain and difficulty in movement.

See Also

• Phalanges of the foot
• Metatarsophalangeal joints
• Foot anatomy