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According to function we differentiate non moving joints from slightly and freely moving ones.


Synarthroses

(Greek syn = together, arthros = joint, plural synarthroses)

Synarthrotic joints are pretty much immovable, like for example the sternocostal and the tibiofibular joints.

We find a lot of them in the axial skeleton where stability and protection are given priority over mobility.

They provide us with firm bony attachments and help protect our organs.


Amphiarthroses

(Greek amphi = on both sides, arthro = joint, plural amphiarthroses)

Ampharthrotic articulations are generally slightly movable like the joints between the vertebral bodies or the pubic symphysis.


Diarthroses

(Greek dia = through, between, across, arthro = joint, plural diarthroses)

A diarthrotic joint is a form of articulation that permits maximal motion, as for synovial joints


Remember our rule of thumb

fibrous