Abstract:
Ulnar-sided wrist pain can be attributed to many pathological processes. This can include traumatic, inflammatory
or degenerative conditions. Ulnar impaction syndrome is a group of syndromes that are degenerative conditions
of the wrist caused by an abnormal joint configuration or due to abnormal use. This leads to an increase in axial
loading across the ulnar side of the wrist with resultant joint degeneration. The structures in the wrist concerned
in this syndrome are the triangular fibrocartilage complex, the distal radio-ulnar joint and the lunate triquetral
bones at their ulnar articulations. Even though a number of modalities exist to image the wrist, the options for
accurately assessing ulnar impaction syndrome are limited and may be challenging. Accurate assessment of the
triangular fibro-cartilage complex is essential, as it lies central in the classification of the disease.
