Presentation
Pain and swelling at base of thumb. No history of trauma.
Patient Data
Age: 40 years
Gender: Male
From the case:
Epipyramis
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Info
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Focal soft tissue swelling is present adjoining the radial border of the first carpo-metacarpal joint.
Incidental note is made of a small well corticated osseous density in the intercarpal joint space between the lunate, triquetral, capitate and hamate bones.
Case Discussion
Epipyramis or os epitriquetrum is a rare accessory ossicle of the wrist. It is located at the dorsal aspect of the medial intercarpal space between the lunate, triquetral, capitate and hamate bones.
The patient did not have any symptoms in relation to the accessory ossicle.