The forearm interosseous membrane transmits 60% of axial load from the radius to the ulna through its central band (the thickest, most oblique portion). The distal oblique bundle (DOB) contributes to DRUJ stability. In Essex-Lopresti injuries (radial head fracture with IOM rupture and DRUJ disruption), the entire longitudinal forearm stability mechanism fails, allowing proximal radial migration.
| Origin | Interosseous border of the radius (oblique fibres angled distally from radius to ulna) |
|---|---|
| Insertion | Interosseous border of the ulna |
| Actions | Transmits compressive forces from the radius to the ulna; maintains the radioulnar relationship during axial loading; the central band is the primary structure for longitudinal forearm stability |
|---|
Essex-Lopresti injury (radial head fracture + IOM disruption + DRUJ instability) is the most severe forearm instability pattern. Radial head excision alone produces proximal radial migration and DRUJ dislocation. Management requires radial head arthroplasty (or ORIF) to maintain longitudinal stability while the IOM heals or is reconstructed.
Combined radial head fracture and IOM rupture producing longitudinal forearm instability managed with radial head arthroplasty and IOM reconstruction.
This website uses cookies to enhance your experience. Some are essential for site functionality, while others help us analyze and improve your usage experience. Please review your options and make your choice.
If you are under 16 years old, please ensure that you have received consent from your parent or guardian for any non-essential cookies.
Your privacy is important to us. You can adjust your cookie settings at any time. For more information about how we use data, please read our privacy policy. You may change your preferences at any time by clicking on the settings button below.
Note that if you choose to disable some types of cookies, it may impact your experience of the site and the services we are able to offer.
Some required resources have been blocked, which can affect third-party services and may cause the site to not function properly.
This website uses cookies to enhance your browsing experience and ensure the site functions properly. By continuing to use this site, you acknowledge and accept our use of cookies.
