The purpose of this study was to measure the differences in Health Related Quality of Life (HRQOL) and functional measurements between two groups of patients with Carpometacarpal Osteoarthritis of the thumb.

Two patient groups, who have been diagnosed with Carpometacarpal Osteoarthritis of the thumb were compared to measure the Health Related Quality of life (HRQOL) and functional outcomes following two different surgical procedures. The first procedure is currently the most used procedure is North America, Trapeziectomy with Ligament Reconstruction and Tendon Interposition (T+LRTI); this procedure is compared to Partial Trapeziectomy and Tendon Interposition (PT+TI). HRQOL is measured using three questionnaires: one generic, one condition specific and one to measure utility (costs). Patients received their procedures from the respective surgeons and then came in for regular follow up at 1, 3, 6 and 12 months. At these follow up visits the questionnaires and functional measurements (including grip, key pinch and tip pinch strength), were completed

Inclusion Criteria:

• Diagnosis of advanced stage (Eaton stages II-IV) Carpometacarpal joint (CMCJ) osteoarthritis (OA of the thumb
• Willingness to undergo surgery for CMCJ OA;
• Over the age of 18;
• Able to provide informed consent; and
• Ability to read and comprehend English to complete the HRQOL questionnaires

Exclusion Criteria:

• 1) Diagnosis of Eaton stage I CMCJ OA of the thumb [17]; 2) Under the age of 18; 3) Presence of any concomitant hand pathology (including rheumatoid arthritis, neuropathy and traumatic arthritis); and 4) Previous surgery on the same hand or currently under consideration for other unrelated hand surgery

Adults (Over the age of 18) who have been diagnosed with CMCJ OA of the thumb, Eaton stages II-IV who are english speaking with no other existing hand pathology.

the data will not be made to other researchers, the final results will be anonymized and hopefully published in scientific journals