Corpus: Proximal interphalangeal joint
Natascha van den Höfel
DocCheck Team
Definition
The proximal interphalangeal joint, abbreviated as PIJ or PIPJ, is the joint between the proximal phalanx (base phalanx) and the middle phalanx (medial phalanx) of a finger or toe.
Anatomy
The proximal interphalangeal joints are hinge joints stabilized by tight collateral ligaments. These include:
- collateral ligaments (ligamenta collateralia)
- accessory collateral ligaments (ligamenta collateralia accessoria)
- phalangoglenoid ligaments (ligamenta phalangoglenoidalia)
They allow for extension and flexion. Additionally, a fibrocartilaginous structure, the dorsal plate, is located in the area of the PIJ.
Clinic
The proximal interphalangeal joints are affected in the context of Bouchard's arthritis.
Geprüfte Änderung
Bearbeitet von Natascha van den Höfel am 19.03.2024 Geprüft von DocCheck