Hi.. I would like to clarify that these injuries what you have like back...shoulder elbow and hand may not be related directly to each other while they might cause due to oveuse and get compensation, leading to injuries if one joint is not working as or its range and capacity.... I suggest you to kindly get it treated at the earliest to avoid any long term complications.. as we need to ascertain these issues are mechanical problems or due to some hormonal or abnormal metabolism... I suggest you to kindly ice up your joints frequently.. Dont strain your joints too much.. Support your back to maintain posture... Kindly fix up your appointments with a orthopaedic doctor for a check up. Hope this is helpful for you... Kindly revert back in case you need any further clarification...