Our skeletal bones form a special relationship between themselves through our joints or articulations.

These joints connect, in some cases, two or more bones having extreme mobility, for example, those of the limbs. In other cases they unite bones that are relatively less flexible, such as the spinal column; and  in other cases they join bones that are absolutely immobile such as the cranial box.

Joints, most importantly those used for movement and weight bearing, can be afflicted by pathologies that can lead to the necessity of a joint substitution intervention.

These pathologies are of many different natures and highly invalidating.