Allowed Joint Movements - Synarthroses, Amphiarthroses & Diarthroses

Synarthroses is an immovable joint. Amphiarthroses is slightly movable. Diarthroses is freely movable. The best way I found to remember the order of these is "SAD," which is the first letter of each in order from the least allowed movement to the most. To remember what Synarthroses means it's helpful to think "No movement would be a Sin(Syn)."