The quadrate ligament of Denuce is a thin, square-shaped fibrous band spanning the inferior margin of the radial notch of the ulna to the medial surface of the radial neck, reinforcing the inferior capsule of the proximal radioulnar joint. It is consistently present and lies inferior to the annular ligament, limiting supination and pronation at the proximal radioulnar joint by tightening in extreme rotation.
Reinforces the inferior aspect of the proximal radioulnar joint capsule, limits extremes of forearm rotation, and maintains the approximation of the radial neck to the ulnar radial notch at the inferior margin of the annular ligament.
The quadrate ligament is damaged in radial head fractures and dislocations involving the proximal radioulnar joint. It is identified during surgical approaches for radial head replacement and annular ligament reconstruction, where its preservation contributes to proximal radioulnar joint stability. Failure to repair or reconstruct the quadrate ligament in Monteggia fracture repairs may contribute to recurrent radial head dislocation.
Disruption of the quadrate ligament along with the annular ligament in Monteggia fracture-dislocations allows persistent or recurrent radial head dislocation after ulnar fracture fixation, requiring annular ligament and quadrate ligament reconstruction for stability.
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.
