saddle joint
Definition: a biaxial synovial joint in which the double motion is effected by the opposition of two surfaces, each of which is concave in one direction and convex in the other; as in the carpometacarpal joint of the thumb.
Synonym(s): articulatio sellarisTA, articulatio ovoidalis
Search Stedman's Medical Dictionary
Examples: glitazone, GI cocktail, etc.
