Hi and thanks for the query, Its not unusual to have this sensation in individuals with a past history of dislocation. The upper limb is supplied with nerves through a bundle of nerves called the brachial plexus. This brachial plexus happens to pass through the ampit and shoulder region to give other branches that supply the rest of the arm and the forearm. Compression or inflammation of these nerves at the level of the shoulder has direct effects at the levels of the fingers or hand, or other region of the upper limb supplied by these nerves. A clinical reevaluation is often necessary. Vitamin B comples, non steroidal anti inflammatory drugs, steroids and at times calcitonin injections, depending on the case usually offer much help. Getting advise form your physician on the particular movements to adopt and physiotherapy advise is often welcome in such cases. Thanks and best regards, Luchuo, MD.