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
Identifiers
Latin articulatio sellaris
Dorlands
/Elsevier
a_64zPzhtm#/12161531
TA A03.0.00.048

Anatomical terminology

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

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

Wikimedia Commons has media related to Saddle joints.


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