What Is the Proximal Interphalangeal Joint?

The interphalangeal joint, also known as the interphalangeal joint, is composed of the phalanx of the previous section and the bottom of the phalanges of the next section. It is a block and can only be flexed and extended.

Interphalangeal joint

The interphalangeal joint, also known as the interphalangeal joint, is composed of the phalanx of the previous section and the bottom of the phalanges of the next section. It is a block and can only be flexed and extended.

Chinese name

Interphalangeal joints ^[1]

Foreign name

interphalangeal joint ^[2]

There are two sets of interphalangeal joints ^[1] (except thumb):

Proximal interphalangeal joints (PIJ or PIP for short) are located between the first phalange (proximal) and the second phalange (middle).

Distal interphalangeal joints (DIJ or DIP for short) are located between the second (third) and third (distal) phalanges.