PenisHealthLife.net Cold packs will reduce inflammation, and are most helpful when applied for the first few days following a shoulder injury. After that, you can switch to using a heat pack; intermittent applications of heat can help relax the shoulder muscles. A heat pad used at night when sleeping will keep the shoulder from stiffing up. You should rest your shoulder for a couple of days after an injury, and if you have dislocated your shoulder, you may need to rest your arm in a sling or splint for several weeks after the joint has been manipulated back into place...


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