patient is 18 to 75 years of age, inclusive

patient qualifies for primary unilateral or bilateral total hip arthroplasty (tha) based on physical exam and medical history including the following: avascular necrosis (avn), osteoarthritis, inflammatory arthritis (i.e.rheumatoid arthritis), post-traumatic arthritis

patient has no history of previous prosthetic replacement device of any type, including surface replacement arthroplasty, endoprosthesis, etc. of the affected hip joints(s)

the patient has an active or latent infection in or about the affected hip joint or an infection distant from the hip joint that may spread to the hip hematogenously.

the patient has insufficient bone stock to fix the component.

the patient has osteoradionecrosis in the affected hip joint.

the patient has a known sensitivity or allergic reaction to one of more of the implanted materials.

the patient has known local bone tumors and/or cysts in the operative hip.

the patient has a body mass index (bmi) >40.