Clinical Research Directory

Inclusion: 1. Age 18 - 80 years 2. Body mass index ≤40 (BMI = kg/m2) 3. Patient is willing and able to provide informed consent 4. Patient qualifies for primary THA, via an anterior approach, due to osteoarthritis or avascular necrosis of the hip based on Investigator's clinical judgment 5. Independent of study participation, patient is a candidate and meets the indications and none of the contraindications for use with the ROSA Hip System Exclusion: 1. Has undergone an orthopaedic procedure of the spine or lower extremity, or is currently participating in a pain management clinical study of any joint, within the last 6 months or planned within the next 6 months 2. Patients receiving simultaneous bilateral hip arthroplasties are excluded from participation in this study; as well as any participants with staged bilateral arthroplasties within 6 months of each other 3. Active infection, sepsis, osteomyelitis 4. Patient is at a high risk for dislocation including those with long-segment spinal fusions (\>3 levels) and neuromuscular disorders 5. Inflammatory (rheumatoid or psoriatic arthritis) or post-traumatic arthropathy, or any other degenerative joint disease not consistent with osteoarthritis 6. Would, in the Investigator's opinion, be unwilling or unable to comply with the postoperative follow-up schedule 7. Patient is considered a member of a vulnerable population (pregnant, prisoner, mentally incompetent, etc.) 8. Previous hardware in the proximal femur or acetabulum from a prior orthopaedic procedure