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
Identifiers
Dorlands; /Elsevier	a_64zPzhtm#/12161531
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FMA	{{#property:P1402}}
	Anatomical terminology [[[d:Lua error in Module:Wikidata at line 863: attempt to index field 'wikibase' (a nil value).\|edit on Wikidata]]]

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.

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

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

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