Shoulder is most mobile joint of human body so due to less stability and hyper mobility of this joint, shoulder joint is most common joint of human body to dislocate.
shoulder joint is ball and socket joint and it is made up of two bones one is scapula which made socket of joint and other is humerus which made ball of this joint.
shoulder joint has two stabiliser for stability of joint, bony stabilizer and dynamic stabilizer when any of stabilizer torn due to injury shoulder dislocation occurs.
reduction of shoulder joint without anaesthesia is a simple daycare procedure and you can go home even after 10 mins of procedure. you can see the vedio that how simple is procedure of reduction of shoulder dislocation.