Ascension® Post- Approval Study; PyroCarbon Metacarpophalangeal Total Joint Prosthesis

Inclusion Criteria:

- Indications consistent with the FDA approved Indications For Use: Index, long, ring,
or small finger metacarpophalangeal (MCP) joints that exhibit symptoms of pain,
limited motion, or inadequate bony alignment (i.e., subluxation/dislocation) secondary
to articular destruction or degenerative disease related to rheumatoid arthritis,
systemic lupus erythematosus, osteoarthritis, or post-traumatic arthritis where soft
tissue reconstruction can provide adequate stabilization

- Willing to participate in the study

- Signed an Informed Consent Form

- The means and ability to return for all required study visits

- Are not transient

Exclusion Criteria:

Patients who have any of the following contraindications will be excluded from the study:

- Inadequate bone stock at the implantation site

- Active infection in the MCP joint

- Nonfunctioning and irreparable MCP musculotendinous system

- Physical interference with or by other prostheses during implantation or use

- Procedures requiring modification of the prosthesis

- Skin, bone, circulatory and/or neurological deficiency at the implantation site