Multi-Site, Post-Market Study of the ICONACY I-Hip System

Inclusion Criteria: * A candidate for primary hip replacement on this operative hip. * Is 30 to 80 years of age. * Has hip joint disease related to one or more of the following: * Degenerative joint disease, (including osteoarthritis or post-traumatic arthritis) * Avascular Necrosis (AVN). * Will be available for evaluation for the duration of the study. * Is able and willing to speak and read English, read and sign the informed consent, fill out the WOMAC and Patient Satisfaction questionnaires, and follow all study procedures. Exclusion Criteria: * Is younger than 30 years of age or older than 80 years of age. * Has undergone partial hip replacement or previous ORIF (open reduction internal fixation of femur or acetabulum). * Has undergone total hip replacement on this hip in the past (no revisions allowed in study). * Infection, or history of infection, acute or chronic, in the hip joint, or acute or chronic unresolved systemic infection. * Is currently experiencing radicular pain from the spine down operative leg. * Has participated in an IDE/IND clinical investigation with an investigational product in the last three months, or is involved in any personal injury litigation, medical-legal or worker's compensation claim. * Is a known drug or alcohol abuser or has a psychological disorder that could affect the ability to complete patient reported questionnaires. * Has been diagnosed with fibromyalgia or has a significant neurological or musculoskeletal disorder or disease that may adversely affect gait or weight bearing (e.g. muscular dystrophy, multiple sclerosis, Charcot disease). * Has been diagnosed with Paget's disease or Congenital hip deformity (dysplasia and/or dislocation). * Is suffering from inflammatory arthritis (e.g. rheumatoid arthritis, juvenile rheumatoid arthritis, psoriatic arthritis, systemic lupus erythematosus, etc.) * Is Obese: (Defined for this study as having a BMI\>45). * Has insufficient bone quality. * Has loss of ligamentous structures. * Has materials sensitivity. * Is currently a prisoner. * Is pregnant or lactating. * Has a contralateral amputation. * Has a medical condition with less than 2 years of life expectancy.