What structure is represented by the pisiform bone in a lateral wrist image?

The pisiform bone is specifically identified as the structure represented in a lateral wrist image. It is a small, pea-shaped bone located on the anterior surface of the wrist, specifically sitting on top of the triquetrum. In lateral views of the wrist, the pisiform can often be seen projecting anteriorly, making it distinctly recognizable.

In the context of wrist anatomy, the pisiform serves as a point of attachment for certain ligaments and muscles, particularly the flexor carpi ulnaris tendon. Its unique positioning and shape help it stand out in imaging studies, allowing healthcare professionals to assess it accurately and differentiate it from other carpal bones. Understanding the location and role of the pisiform is crucial for interpreting radiographic images and diagnosing potential injuries or conditions within the wrist.