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types of synovial joints [2]click to hear

Joints bounded by a fibrous capsule whose inner membrane secretes a viscous lubricating liquid (synovia), thus allowing a wide range of motion.
types of synovial joints [2] condyloid joint saddle joint thumb metacarpal trapezium gliding joint tarsus navicular 2nd cuneiform 1st cuneiform wrist scaphoid radius lunate

condyloid joint click to hear

An example is the wrist, which the hand can move on two axes: flexion and extension; it can also be tilted sideways (toward the radius and ulna).

saddle joint click to hear

Resembles the condyloid joint but allows a wider range of motion; this type of joint is rare.

thumb click to hear

The thumb is an example of a saddle joint.

metacarpal click to hear

Each of the five bones forming the metacarpus. The metacarpal bone of the thumb is very mobile.

trapezium click to hear

Bone of the anterior row of the carpus articulating especially with the metacarpal bone of the thumb.

gliding joint click to hear

Surfaces of these joints are relatively flat and not very mobile; they allow only a narrow gliding range (e.g., vertebrae, certain bones of the carpus).

tarsus click to hear

Gliding joints that ensure the displacement of certain bones of the tarsus.

2nd cuneiform click to hear

Bone of the anterior row of the tarsus articulating especially with the metatarsal bone of the second toe and the scaphoid bone.

1st cuneiform click to hear

Bone of the anterior row of the tarsus articulating especially with the metatarsal bone of the big toe and the scaphoid bone.

wrist click to hear

Condyloid joint of the hand (carpus) articulating with the forearm (radius); it mainly enables the hand to flex and extend.

scaphoid click to hear

Bone of the posterior row of the carpus articulating especially with the radius to form the wrist.

radius click to hear

Long bone making up the outer section of the forearm; it is connected especially to the carpal bones to form the wrist joint.

lunate click to hear

Bone of the posterior row of the carpus articulating especially with the radius to form the wrist.