Origin Stem and Logical Cup Post Market Clinical Follow-up

Inclusion Criteria: * patient requires unilateral primary total hip arthroplasty due to non-inflammatory degenerative joint disease (e.g. osteoarthritis, traumatic arthritis, avascular necrosis, dysplasia/DDH) * patient must be a candidate for use of the products studied, as determined jointly by the surgeon and patient * male and non-pregnant female patients aged 18-75 * patients who understand the conditions of the clinical evaluation and are willing to participate for the length of the prescribed follow-up Exclusion Criteria: * patient has active infection or sepsis (treated or untreated) * patient has any vascular insufficiency, muscular atrophy, or neuromuscular disease severe enough to compromise implant stability or postoperative recovery. * patient is female of child-bearing age and not taking contraceptive precautions * patient has inadequate bone stock to support the device (e.g. severe osteopenia, family history of severe osteoporosis or osteopenia) * patient has inflammatory joint disease (e.g. rheumatoid arthritis) * patient has known moderate to severe renal deficiency * patient has a known or suspected metal sensitivity * patient is immuno-suppressed with diseases such as AIDS or is receiving high dose of corticosteroids * patient has an emotional or neurological condition that would pre-empt their ability or unwillingness to participate in the clinical evaluation including mental illness, mental retardation or drug abuse * patient is severely overweight with a BMI\>40.