A 73-year-old Polynesian male exhibits a small, round, supernumerary bone along the radial diaphysis of the proximal phalanx of the right thumb. This accessory bone resembles a pearl in shape and color and is firmly attached via soft tissue, a ligament. A search of the literature failed to reveal any supernumerary bones attached to the radial surface of the first proximal phalanx. The presence of this supernumerary bone, although quite small and different from other small ossicles in the human skeleton, is potentially important to clinicians, anatomists, and anthropologists. This bone, or others like it, could be symptomatic and represents a rare trait that contributes to our knowledge of anatomical variation in hand bones.

中文翻译：

---

骨珍珠：拇指的神秘多生小骨

一名 73 岁的波利尼西亚男性在右手拇指近节指骨的桡骨骨干处有一块小的圆形多生骨。这种附属骨在形状和颜色上类似于珍珠，并通过韧带软组织牢固地附着。对文献的搜索未能发现任何附在第一近节指骨径向表面的多余骨头。这种多生骨的存在虽然非常小并且与人体骨骼中的其他小听骨不同，但对临床医生、解剖学家和人类学家来说可能很重要。这种骨头或其他类似的骨头可能是有症状的，并且代表了一种罕见的特征，有助于我们了解手骨的解剖变异。