左手中指第二節同第三節中間無啦啦好似的玻璃碎片沈左入去

You better see 骨科專科医生, as we can examine you and if necessary check x-ray to find out the cause.
Most 玻璃碎片can be seen in x-ray

We cannot tell you what you suffer exactly without proper examination!

Follow-up question is welcome (in Chinese or English)!