Ceramic Modular Dual Mobility in Primary Total Hip Arthroplasty (THA)

Inclusion Criteria: * Primary coxarthrosis patients indicated for cementless total hip arthroplasty * Written informed patient consent Exclusion Criteria: * Hip trauma or revision surgery * Rheumatoid or neurologic disease * BMI \>35 * Ongoing oncologic therapy * Preoperatively elevated Co or Cr serum levels \>1.0 µg/L * Patients with other joint implants, or anticipated need for another joint replacement surgery within the study period * Acetabular cup size \<52 expected * Patients not able to mentally or physically comply with the study demands and follow-up visits * Patients \<18 years at surgery * Pregnancy