Clinical Evaluation of the Articulinx InterCarpoMetacarpal Cushion (ICMC)for Osteoarthritis of the First CarpoMetacarpal Joint

Inclusion Criteria: * Patient is diagnosed by the investigator to be medically acceptable for a surgical procedure? * Patient is aged 40 to 75 inclusive? * Patient has symptomatic osteoarthritis of the carpometacarpal (CMC-1) joint as demonstrated by a minimum DASH score of 40 at baseline? * Patient has pain in the target CMC joint as demonstrated by an average VAS pain score greater than or equal to 40 at baseline on a 100mm VAS? * Patient has radiographic evidence of Stage II OA with no free-floating bodies in the CMC-1 joint? * Radiographic Stage II OA is defined according to the Eaton-Glickel classification system (based upon lateral view) as follows: "Slight narrowing of the TM \[trapezio-metacarpal/CMC\] joint will be present with minimal sclerotic changes of the subchondral bone. There may be joint debris not exceeding 2 mm in diameter in the form of osteophytes or loose bodies The ST \[scapho-trapzeial joint\] should appear normal." * Patient has subluxation of less than one-third of the target CMC joint? * Patient agrees to return to the clinic for follow-up visits at the required times per protocol and follow the requirements of this protocol? * Patient is able and willing to provide voluntary consent to participate? Exclusion Criteria: * Patient has non-symptomatic osteoarthritis of the first CMC joint? * Patient has small bone or calcific fragments (spurs, osteophytes) in the target CMC joint greater than two millimeters (\>2mm) in diameter? * Patient has fre…