How can you provide stability to your family?
You can create an atmosphere of stability for your family by having definite rules of behavior that everyone understands and follows, by making certain to your children that the parents are the ones in charge, by dealing with problems in an intelligent, responsible and mature fashion as problems arise, by treating all family members with respect, by requiring that everyone help out, by teaching that every family member is responsible for the others, by teaching everyone to be helpful and kind to each other, by teaching that the right thing is always the best thing to do.
In the shoulder joint, stability has been sacrificed to provide the most freely moving joint in the body. The articulating bones provide minimal joint stability because of the size and "fit" of the articulating surfaces. The major stabilizing forces are soft tissue, in particular the tendons of the rotator cuff muscles (via muscle tone).