Shoulder pain
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What is shoulder pain?
Shoulder pain involves any pain in or around your shoulder joint. You may feel the pain most when you reach behind your back or overhead. There are many reasons why you may get a painful shoulder.

The most common cause of shoulder pain is a problem with the tendons (cords of tissue) that attach your shoulder muscles (rotator cuff muscles) to the bone of your upper arm. More than 6 in 10 people who have shoulder pain also have problems with their tendons.1

If you have pain in your shoulder, it is probably caused by a problem with your tendons.
Four tendons called rotator cuff tendons hold your shoulder joint in place.2 Your shoulder is the most flexible joint in your body. But its wide range of movement also means that it’s easy to injure your shoulder. You can get pain if your rotator cuff tendons get damaged or swollen, or if there are changes in the bone around them.

  • Sometimes your tendons get trapped under the bony arch in your shoulder.2 This pinching can damage your tendons, causing inflammation.
  • Your shoulder can become weak as you get older, or because of an injury.
  • A repeated activity, such as throwing a ball or heavy lifting, can also damage your tendons or make them feel tender.
  • If a rotator cuff tendon tears, your injury will be more serious.

There are some other reasons why you may get shoulder pain.

  • You have a frozen shoulder that is painful and hard to move. You may also hear this called adhesive capsulitis. It can happen if you don't use your shoulder after an injury, causing it to stiffen up. Women, older people and people who've had shoulder surgery are more likely to get a frozen shoulder.3 You're also more likely to get it if you have a medical condition such as diabetes or if you've had a stroke.
  • You have arthritis in the joints around your shoulder.4
  • You have neck problems, such as a pinched nerve. Doctors call this referred pain, because the pain is caused by a problem in one part of your body (your neck), but you feel the pain in another area (your shoulder).



Sources for the information on this page:
  1. Vecchio P, Kavanagh R, Hazleman BL, et al. Shoulder pain in a community-based rheumatology clinic. British Journal of Rheumatology. 1995; 34: 440-442. 7788173
  2. Medline Plus. Shoulder pain. Available at http://www.nlm.nih.gov/medlineplus/print/ency/article/003171.htm (accessed on 21 November 2007).
  3. Lundberg B. The frozen shoulder. Acta Orthopaedica Scandinavica. 1969; 119 (supplement): 1-59.
  4. Riordan J, Dieppe PA. Arthritis of the glenohumeral joint. Baillieres Clinical Rheumatology. 1989; 3: 607-626.
This information was last updated in Sep 01, 2008