Osteoarthritis base thumb (CMC joint osteoarthritis)

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This is the name given to the degenerative arthritis which causes pain and stiffness at the base of the thumb, adjacent to the wrist.The process of osteoarthritis involves wearing/ thinning of the smooth cartilage joint surfaces as well as stiffening of the soft tissue surrounding the joint. These aspects combine to produce swelling, inflammation and pain. Several factors normally combine to cause symptoms of osteoarthritis:

  • Previous joint damage (from trauma or other conditions such as such as gout and rheumatoid arthritis)
  • Age (risk increases with age)
  • Family history (genetics)