Saddle Joint

The Saddle Joint model demonstrates the unique movement enabled by this joint type, as found in the thumb’s carpometacarpal joint. Using two pipes, a small plastic bead, and nut bolts, this model shows how saddle joints allow movement in two directions - forward-backward and side-to-side - enabling the thumb’s versatile range of motion. 

Learning Objective:

To understand the structure and function of the saddle joint and its role in enabling the thumb’s distinctive multi-directional movement, essential for grasping and precision. 

Keywords:

Human anatomy, Human body, Joint mechanics, Body movements, Biology experiment