saddle joint

The only saddle joints in your body are in your thumbs.

A saddle joint, for example the thumb joint.

Saddle joints are said to be biaxial, allowing movement in the sagittal and frontal planes.

The bones in a saddle joint can rock back and forth and from side to side, but they have limited rotation.

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

He remembered that the thumb joint is officially called the carpometacarpal joint, although it is informally referred to as the "saddle joint."

Prior to this discovery all known hip-leg joints have been based on either the ball and socket joint system for hip-leg connections, as in humans, as hinges or as saddle joints.

While the mobility of the fourth CMC joint thus is perceptible, the first joint is a saddle joint with two degrees of freedom which except flexion/extension also enable abduction/adduction and a limited amount of opposition.

The metacarpophalangeal joints (MCP) are of the condyloid kind, formed by the reception of the rounded heads of the metacarpal bones into shallow cavities on the proximal ends of the first phalanges, with the exception of that of the thumb, which is a saddle joint.