We just learned about the Metacarpal Ligaments that connect your metacarpal bones together in your hand.
The metacarpal bones in the hand connect to the finger bones called phalanges, and there are phalangeal ligaments connecting the metacarpal bones together, and the finger bones together.
The joints where the bones connect has padding to keep the bones from smashing into each other, and also keeps them stuck together so they can't be pulled apart.
(from: wikipedia - metacarpophalangeal joint)
The finger bones have ligaments that go over and under the fingers, to help your fingers stretch out or close into a fist.
(from: wikipedia - palmar plate)
Kid Facts - Blast from the past: Dendrite