Interosseous membrane of forearm

Interosseous membrane of forearm

Image of human elbow and forearm. Interosseous membrane labeled at bottom center.
Details
Latin membrana interossea antebrachii
Identifiers
Dorlands
/Elsevier		 m_08/12522097
TA A03.5.06.002
FMA 23706
Anatomical terminology

The interosseous membrane of the forearm (rarely middle or intermediate radioulnar joint) is a fibrous sheet that connects the radius and the ulna. It is the main part of the radio-ulnar syndesmosis, a fibrous joint between the two bones.

Function

The interosseus membrane divides the forearm into anterior and posterior compartments, serves as a site of attachment for muscles of the forearm, and transfers forces from the radius, to the ulna, to the humerus. As the forearm moves from pronation to supination, the interosseous membrane fibres change from a relaxed state, to a tense state in the neutral position. They once again become relaxed as the forearm enters supination.

See also