EMPHASYS Cup Positioning in THA With Non-Invasive Navigation (Velys Hip Navigation (VHN))

Inclusion Criteria:

1. All hip replacement component devices are to be used according to the approvedindications.

2. The subject is undergoing a standard of care primary uncemented hip replacement withthe EMPHASYS cup and a CORAIL, EMPHASYS or ACTIS stem via the posterolateral,anterolateral, or direct lateral approach with the subject in the lateral decubitusposition.

3. The subject is a candidate for implantation utilizing the VELYS Hip Navigationsystem with CUPTIMIZE advanced

4. Individuals who are able to speak, read, and comprehend the Informed ParticipantConsent Document and willing and able to provide consent for participation in thestudy and have authorized the transfer of his/her information to DePuy Synthes.

5. Individuals who are willing and able to complete follow-up as specified by the studyprotocol.

6. Individuals who are willing and able to complete the Subject Hip Outcomesquestionnaires (i.e., FJS-12, EQ-5D-5L and Hip Evaluation) as specified by the studyprotocol.

7. Individuals who are not bedridden per the discretion of the investigator.

8. Individuals who are a minimum age of 21 years at the time of consent

Exclusion Criteria:

1. Active local or systemic infection.

2. Loss of musculature, neuromuscular compromise or vascular deficiency in the affectedlimb rendering the procedure unjustified.

3. Poor bone quality, such as osteoporosis, where, in the surgeon's opinion, therecould be considerable migration of the prosthesis or a significant chance offracture of the femoral shaft and/or the lack of adequate bone to support theimplant(s).

4. Charcot's or Paget's disease.

5. The Subject is a woman who is pregnant or lactating.

6. Subject had a contralateral amputation.

7. Previous partial hip replacement in affected hip.

8. Subject has participated in a clinical investigation with an investigational product (drug or device) in the last three months.

9. Contralateral hip was replaced less than 6 months prior to surgery date.

10. Subject is currently involved in any personal injury litigation, medical-legal orworker's compensation claims.

11. Subject was diagnosed and is taking prescription medications to treat a musculardisorder that limits mobility due to severe stiffness and pain such as fibromyalgiaor polymyalgia.

12. Subject has a medical condition with less than 2 years of life expectancy.

13. Subject, in the opinion of the Investigator, is a drug or alcohol abuser or has apsychological disorder that could affect their ability to complete subject reportedquestionnaires or be compliant with follow-up requirements.