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Saddle joint

Type of synovial joint with concave, convex surfaces

Type of synovial joint with concave, convex surfaces

FieldValue
NameSaddle Joint
Latinarticulatio sellaris
ImageGelenke_Zeichnung01.jpg
Caption**1**: Ball and socket joint; **2**: Condyloid joint (Ellipsoid); **3**: Saddle joint; **4** Hinge joint; **5**: Pivot joint;
Image2Gray335.png
Caption2Ligaments of wrist. Posterior view.

A saddle joint (sellar joint, articulation by reciprocal reception) is a type of synovial joint in which the opposing surfaces are reciprocally concave and convex. It is found in the thumb, the thorax, the middle ear, and the heel.

Structure

In a saddle joint, one bone surface is concave while another is convex. This creates significant stability.

Movements

The movements of saddle joints are similar to those of the condyloid joint and include flexion, extension, adduction, abduction, and circumduction. However, axial rotation is not allowed. Saddle joints are said to be biaxial, allowing movement in the sagittal and frontal planes.

Examples of saddle joints in the human body include the carpometacarpal joint of the thumb, the sternoclavicular joint of the thorax, the incudomalleolar joint of the middle ear, and the calcaneocuboid joint of the heel.

Name

The term "saddle" arises because the concave-convex bone interaction is compared to a horse rider riding a horse, with both bone surfaces being saddle-shaped. The saddle joint is also known as the sellar joint.

References

References

  1. Lawry, George V.. (2006-01-01). "Chapter 1 - Anatomy of Joints, General Considerations, and Principles of Joint Examination". Mosby.
  2. (2009-01-01). "CHAPTER 5 - The articular system". Churchill Livingstone.
  3. (2019-01-01). "Chapter 2 - Structure and Function of Joints". Mosby.
  4. (2010-01-01). "CHAPTER 3 - Basic bones of ontogeny". Churchill Livingstone.
  5. (March 6, 2013). "ANATOMY & PHYSIOLOGY: Classification of Joints". OpenStaxCollege.
  6. (11 January 2018). "Saddle joint - Definition, Movements, Examples and Diagrams".
  7. (2018). "Clinically Oriented Anatomy". Wolters Kluwer.
  8. (2018). "Clinically Oriented Anatomy". Wolters Kluwer.
  9. (2016). "Gray's Anatomy: The Anatomical Basis of Clinical Practice". Elsevier Health Sciences.
Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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