Proprioception:  the physiology that controls an articulation depends on numerous control mechanisms located in the muscle tendons, ligaments and articular capsule; therefore, it is advisable to train these ‘micro-computers’ to increase or revive control of a joint.  Following a sprain, to treat arthrosis or recover articular mobility, even improve effectiveness, this proprioception must be trained.  This work must be very precise, because it is not the joint that is trained but a specific ligament or part of the capsule.  Hundreds of exercises may be used for proprioceptive work.