The triquetrum is a pyramid-shaped carpal bone on the medial side of the proximal row that articulates with the pisiform anteriorly and the hamate distally, and bears the impact of ulnar-sided wrist trauma.
| Articulations |
|
|---|---|
| Landmarks |
|
| Ossification | Endochondral ossification from a single centre appearing at age 3. |
The triquetrum articulates with the TFCC rather than the radius, making it part of the medial column of the carpus. Triquetrum dorsal chip fractures from dorsal impaction are the second most common carpal fracture after the scaphoid. Lunotriquetral ligament tears from a FOOSH produce ulnar wrist pain reproduced by the lunotriquetral shear test (Reagan ballottement test).
The second most common carpal fracture, a small avulsion from the dorsal triquetrum after a fall onto the hand, which usually heals with brief immobilisation.
Tearing of the ligament between the lunate and triquetrum causes ulnar-sided wrist pain and clicking.
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.
