What joins bones together?

Answer 1

Ligaments join bone together directly. However, you could say bones are also joined by muscles and tendons indirectly. Muscles attach to bone through tendons, which attach to another bone (through yet another tendon) on the other side.

Basically, though, the answer I believe you want is ligaments.

Answer 2

Ligaments are the connective tissues that hold your bones together. They are very similar to tendons, which help to move the bones.

Answer 3

First and second.