Can my IPhone screen be repaired?

Hi, so I cracked my screen on the pavement but then just a while ago, I dropped it on the ground again and one of the pieces had come out as shown in the image and are they able to fix this part of my phone? I know they can fix a screen, but what if there's a small bit missing? Is it still able to fix? Thank you.
It is an IPhone 4s by the wayCan my IPhone screen be repaired

The screen can be replaced.