Connection lost. Please refresh the page.
Get help How to study Login Register
Ready to learn?
Pick your favorite study tool

Saddle joint

Recommended video: Types of synovial joints [18:19]
Synovial joints are the main type of joints found in the body.

Saddle joints, sometimes called sellar joints, are a type of synovial joint formed between convex and concave articulating surfaces, interlocking like two saddles opposed to one another.

Similar to condyloid joints, saddle joints usually allow movement with two degrees of freedom. Specifically, they allow flexion and extension, abduction and adduction as well as circumduction.

The first carpometacarpal joint or trapeziometacarpal joint is a synovial saddle joint. It is a multiaxial joint, allowing the movements in three degrees of freedom: flexion and extension, abduction and adduction and some axial rotation. It is the combination of this joint and our elongated thumbs that allow us to oppose the thumb and therefore perform complex tasks with our hands.

Two other examples of synovial saddle joints are the sternoclavicular joint and the incudomalleolar joint. The former is a joint connecting the sternum with the clavicles. It is the only direct connection between the appendicular skeleton of the upper limb and the axial skeleton of the trunk. The latter is also known as the incudomallear joint and comprises the articulation between the incus and the malleus. The joint is part of the chain of ossicles sending vibrations from the tympanic membrane to the oval window. 

Terminology English: Saddle joint
Synonym: Sellar joint

: Articulatio selaris
Definition Saddle joints are a type of synovial joint formed between convex and concave articulating surfaces of bones

You can learn more about the different types of synovial joints in the following study unit:

Saddle joint: want to learn more about it?

Our engaging videos, interactive quizzes, in-depth articles and HD atlas are here to get you top results faster.

What do you prefer to learn with?

“I would honestly say that Kenhub cut my study time in half.” – Read more.

Kim Bengochea Kim Bengochea, Regis University, Denver
© Unless stated otherwise, all content, including illustrations are exclusive property of Kenhub GmbH, and are protected by German and international copyright laws. All rights reserved.

Register now and grab your free ultimate anatomy study guide!