Shoulder Dislocation: Usually caused by direct trauma (i.e. falling on an outstretched arm). The ball of the shoulder joint becomes disrupted. Patient should seek immediate medical attention. Rehabilitation will be needed to improve range of motion and increase strength.
Rotator Cuff Strain: Is an overuse problem. Originates from repetitive movements. Signs and symptoms may include sharp, dull, throbbing pain to the shoulder and possibly down the arm. Person may have difficulty sleeping on affected shoulder, may have difficulty dressing, reaching behind back, or raising arm above head. Pain may be relieved with ice, anti-inflammatories, and modification of movement. Rehabilitation can help restore range of motion and pain-free function to the shoulder. If pain persists or worsens, follow up with a physician to rule-out any severe problems.
Frozen Shoulder: Also known as Adhesive Capsulitis. Usually stems from previous shoulder injuries or a long period of immobilization. Frozen shoulder is associated with decreased range of motion and increased pain and can be very debilitating. Physical therapy, and extremity manipulation, is usually required to re-establish normal range of motion and function to the shoulder.