MDR Vivacit-E Elevated Study

Inclusion Criteria: * Patient was 18 years of age or older and skeletally mature at the time of surgery * Patient qualified for and underwent surgical procedure with a Vivacit-E Vitamin E HXLPE Elevated Liner to treat one of the following indications in primary THA: * Noninflammatory degenerative joint disease including osteoarthritis and avascular necrosis * Protrusio acetabuli * Traumatic arthritis * Slipped capital epiphysis * Fused hip * Fracture of the pelvis * Diastrophic variant * Patient underwent surgical procedure 10 years (+ no maximum/- 182 days) prior to date of study consent * Patient is will and able to sign IRB approved Informed Consent Form or provide verbal consent Exclusion Criteria: * Off label use or not according to the approved IFU at the time of surgery * Patient presented with any of the following at the time of the surgical procedure: * Osteoradionecrosis * Neuromuscular compromise, vascular deficiency or other conditions in the affected limb that may lead to inadequate skeletal fixation * Systemic or local infection * Revision procedure where other treatment or devices have failed\* * Patient has a psychiatric illness or cognitive deficit that will not allow for proper informed consent * Uncooperative patient or patient with neurologic disorders who is incapable or unwilling to follow directions * For the purpose of this clinical study; a revision procedure refers to a procedure in which the prior procedure on the ipsilateral hip utilized a si…