Lunate (right) (Os lunatum)
Educational content only — not medical advice.
Anatomy
The moon-shaped carpal sitting between radius and capitate, sharing the radiocarpal joint with the scaphoid; its distal concave surface cups the head of the capitate. This is the right member of the pair.
Clinical notes
Anterior dislocation into the carpal tunnel compresses the median nerve, numbing thumb to ring finger; Kienböck disease (its avascular necrosis after repeated microtrauma) progressively collapses the wrist.
Related structures
Educational references
FAQ
What is the role of the Lunate (right)?
The moon-shaped carpal sitting between radius and capitate, sharing the radiocarpal joint with the scaphoid; its distal concave surface cups the head of the capitate. This is the right member of the pair.
Why is the Lunate (right) clinically important?
Anterior dislocation into the carpal tunnel compresses the median nerve, numbing thumb to ring finger; Kienböck disease (its avascular necrosis after repeated microtrauma) progressively collapses the wrist.
Source & license
Derived from Z-Anatomy (Gauthier Kervyn et al.), CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/); upstream geometry from BodyParts3D, © The Database Center for Life Science. license details