• require TKA due to rheumatoid arthritis, post-traumatic arthritis, osteoarthritis, or degenerative arthritis, failed osteotomies, or failed unicompartmental replacement

• have all cruciate and collateral ligaments intact in the index joint

• adult patients that in the judgement of the Investigator are skeletally mature

• be willing and able to participate in required follow-up visits at the investigational site and to complete study procedures and questionnaires

• consent to participate in the study by signing the IRB/EC approved informed consent form