Interosseous Membrane of Left Forearm (Membrana interossea antebrachii sinister)
Educational content only — not medical advice.
Anatomy
The interosseous membrane of the left forearm is a fibrous sheet connecting the interosseous crests of the left radius and ulna. Dominated by its strong central band whose fibers run obliquely inferomedially from radius to ulna, it shifts longitudinal compressive impact from the radius to the ulna, stabilizes the proximal and distal radioulnar joints, and serves as an attachment site for deep forearm muscles.
Clinical notes
Essex-Lopresti injury involves a comminuted radial head fracture, rupture of the forearm interosseous membrane, and dislocation of the distal radioulnar joint (DRUJ), producing longitudinal forearm instability and proximal radial migration.
Related structures
Educational references
FAQ
What is the role of the Interosseous Membrane of Left Forearm?
The interosseous membrane of the left forearm is a fibrous sheet connecting the interosseous crests of the left radius and ulna. Dominated by its strong central band whose fibers run obliquely inferomedially from radius to ulna, it shifts longitudinal compressive impact from the radius to the ulna, stabilizes the proximal and distal radioulnar joints, and serves as an attachment site for deep forearm muscles.
Why is the Interosseous Membrane of Left Forearm clinically important?
Essex-Lopresti injury involves a comminuted radial head fracture, rupture of the forearm interosseous membrane, and dislocation of the distal radioulnar joint (DRUJ), producing longitudinal forearm instability and proximal radial migration.
Source & license
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