Tendons are the cords that connect bones to muscles in the body. They are covered by a sleeve-like tissue. Tenosynovitis is an inflammation of this sleeve. It occurs most often in the hand, wrist, or foot.

Tenosynovitis
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Most cases of tenosynovitis are caused by one of the following:

  • Injury
  • Infection
  • Strain
  • Repetitive motions such as those used for:
    • Computer operation
    • Assembly line work
    • Cash register operation
    • Sports that involve repetitive actions
    • Sewing
    • Playing musical instruments