Distal radioulnar articulation
Encyclopedia
The distal radioulnar articulation (inferior radioulnar joint) is a pivot-joint formed between the head of the ulna
and the ulnar notch on the distal radius
.
Ulna
The ulna is one of the two long bones in the forearm, the other being the radius. It is prismatic in form and runs parallel to the radius, which is shorter and smaller. In anatomical position The ulna is one of the two long bones in the forearm, the other being the radius. It is prismatic in form...
and the ulnar notch on the distal radius
Radius (bone)
The radius is one of the two large bones of the forearm, the other being the ulna. It extends from the lateral side of the elbow to the thumb side of the wrist and runs parallel to the ulna, which exceeds it in length and size. It is a long bone, prism-shaped and slightly curved longitudinally...
.
Ligaments
The articular surfaces are connected together by the following ligaments:- Volar radioulnar ligamentVolar radioulnar ligamentThe volar palmar is a narrow band of fibers extending from the anterior margin of the ulnar notch of the radius to the front of the head of the ulna.It is sometimes abbreviated PRUL....
- Dorsal radioulnar ligamentDorsal radioulnar ligamentThe dorsal radioulnar ligament extends between corresponding surfaces on the dorsal aspect of the distal radioulnar articulation....
- Articular diskArticular diskThe articular disk is a thin, oval plate of fibrocartilage present in several joints which separates synovial cavities. This separation of the cavity space allows for separate movements to occur in each space....
(Triangular fibrocartilageTriangular fibrocartilageThe Triangular fibrocartilage complex is formed by the triangular fibrocartilage discus , the radioulnar ligaments and the ulnocarpal ligaments .- Anatomy :Triangular fibrocartilage discus...
)