TMC joint arthritis is the second most common degenerative jointdisease in the hand, commonly affecting women in their fifth to sixthdecades of life.Surgical reconstruction of the degenerative basal joint is indicatedwhen conservative measures have failed to relieve pain and improve thumbfunction and includes corrective osteotomy, arthrodesis trapeziectomy aloneand ligament reconstruction tendon interposition arthroplasty.Artelon is a new spacer for the TMC joint based on a biological andtissue preserving concept for the treatment of TMC joint OA. The purposeis to combine a spacing effect with stabilization of the TMC joint