I found the exercise on the internet. Attached is the descriptions and the bins.
Biaxial movement in a condylar joint:
-Example of knuckle joints
-Condylar type of joint
Biaxial movement in a saddle joint:
-Example of carpometacaral joint of the thumb
-Saddle type of joint
-Concave and convex surfaces displayed
Biaxial movement in both types of joints:
-Flexion permitted
-Extension permitted
