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Saddle joint

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Title: Saddle joint  
Author: World Heritage Encyclopedia
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Subject: Synovial joint, Ball and socket joint, Condyloid joint, Joints, Coping (joinery)
Collection: Joints
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Saddle joint

Saddle joint
1: Ball and socket joint; 2: Condyloid joint (Ellipsoid); 3: Saddle joint; 4 Hinge joint; 5: Pivot joint;
Ligaments of wrist. Posterior view.
Details
Latin articulatio sellaris
Dorlands
/Elsevier
a_64zPzhtm#/12161531
Anatomical terminology

In a saddle joint (sellar joint, articulation by reciprocal reception) the opposing surfaces are reciprocally concave-convex.

Contents

  • Movements 1
  • Examples 2
  • References 3
  • External links 4

Movements

The movements are as same as in the condyloid joint; that is to say, flexion, extension, adduction, abduction, and circumduction are allowed; but no axial rotation. Saddle joints are said to be biaxial, allowing movement in the sagittal and frontal planes.

Examples

The best examples of saddle joints are the metacarpal 1 (thumb) and the trapezium of the wrist.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links

  • Diagram at phschool.com


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