And that doesn't count sesamoids in tendons in our hands, feet, and elsewhere.

这还不包括我们手、脚和其他地方肌腱中的芝麻状体。

The fossils are the oldest-known evidence of the false thumb, which is really an enlarged wrist bone called the radial sesamoid.

这些化石是目前已知关于伪拇指的最老证据，伪拇指实际上是一块叫做桡侧籽骨的增腕骨。

Sesamoid bones are small bones in tendons where considerable pressure develops, for instance, in the wrist. These, like sutural bones, are also variable in number. Two sesamoid bones, the patellas (kneecaps) are present in all individuals.

籽骨是肌腱中的小型骨，肌腱中会产生的压力，例如在腕部。这些骨像缝间骨一样，在数量上是可变的。两块籽骨——髌骨（膝盖骨）存在于所有个体中。