AMIStem Primary Hip System Prospective Post-marketing Multi-centre Surveillance Study

Inclusion Criteria: * Patient is a good candidate for a primary hip arthroplasty using AMIStem Hip System * Patient is willing and able to give informed consent to participate in the follow-up program * Patient is suitable for surgery and able to participate in the follow-up program. * Those presenting with disease that meets the indication for use for Medacta implants defined in the study (on-label use) Exclusion Criteria: * Acute systemic or chronic infection * Skeletal immaturity * Severe muscular, neurological, vascular deficiency or other pathologies of the affected limb that may compromise the stability of the implant. * Bone condition that may compromise the stability of the implant. * Patient who are unwilling or unable to give consent, or to comply with the protocol and the follow-up program.