This type of synovial joint has two convex and two concave

Last updated: 7/30/2022

This type of synovial joint has two convex and two concave surfaces and can be found at the base of the thumb, allowing movements such as opposable thumbs and also twiddling (turning) of thumbs. This ability gives humans the fine motor skills necessary for tool making. Saddle Condylar or condyloid Ball and socket Pivot