The current study was prematurely terminated as part of a strategic decision to consolidate resources and incorporate the Trinity implant into another ongoing PMCF study which was initiated to meet updated regulatory requirements.

This observational study is designed to collect safety data and PROMs on retrospective primary total hipa arthroplasty surgeries with Trinity cup and Meije Duo cementless hip system

The major goal of this study is to collect safety and patient-reported outcomes measures (PROMs) data on Trinity cup in combination with Meije Duo cementless hip stem when used in primary total hip arthroplasty (THA).

Data collected from this study will be fed into the Post-Market Surveillance (PMS) and Clinical Evaluation processes of the devices under assessment annually and support presentations at orthopaedic congresses and/or peer-reviewed publication(s) on mid- and long-term safety and clinical performance.

Inclusion Criteria:

• Both genders.
• Adult subjects.
• Subjects who received a primary THR with Trinity cup and Meije Duo cementless femoral stem.
• The subject is willing to comply with the required follow-up visits as per protocol.
• The subject has signed a Patient Informed Consent Form (PICF), specific to this study, and approved by the local EC.

Exclusion Criteria:

• Subjects under guardianship.
• Subjects in the opinion of the Investigator/ investigative team who will be unable to comply with study procedures (Examples: recent psychotic or mania disorders, alcohol, drug or substance abusers) and/or those unable for any medical or other reason to comply with study procedures/visits.

Patients who have undergone to a THA with Trinity cup and Meije Duo cementless hip will be invited to participate in this study. An initial review of the medical database of all Corin Trinity cup procedures performed in the selected study site will be conducted to assess the number of retrospective patients potentially available to join the study. A first contact with the patient will occur telephonically or via mail to explain the study and invite them to join.