Saddle Joint – A type of synovial joint that allows articulation. Both bones have concave and convex surfaces which interlock like two saddles opposed to one another

(Pronounced sah-duhl)

A saddle joint is like sitting on a saddle.

Think of a saddle joint as two saddles sitting snuggly into each other. This joint allows two planes of movement. It is a biaxial joint. 

The saddle joint can be found in the hand between the thumb and one of the eight carpals. 

Imagine thumbing a ride with a saddle (saddle joint) in one arm because your donkey won't go any further. 

The saddle joint allows two planes of movement. 

The saddle joint sits at the bottom of the thumb.