The 3 types of joints in the functional classification are immobile joint, moveable joints and freely moveable joints.
In the field of science, synarthroses can be described as joints that are immovable.
On the other hand, those joints can move slightly and represent slight movement are called amphiarthroses.
Diarthroses can be described as joints that can move freely and completely.
Hence, based on degrees, synarthroses have no movement, amphiarthroses have little whereas Diarthroses have free movement.
Examples of synarthroses are sutures. Example of a diarthrosis is synovial joint and example of amphiarthroses are symphyses.
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