No difference in the level of sports activity between single versus dual mobility total hip arthroplasty in adults: a clinical trial

Current evidence on the quality of sports activity in patients younger than 65 following dual mobility (DM) total hip arthroplasty (THA) is lacking, and whether this coupling allows better performance than single mobility (SM) still needs to be fully clarified. This clinical trial compared sport-related patient-reported outcome measures (PROMs) of the traditional SM versus DM implants in active patients younger than 65. All THAs were performed using a minimally invasive posterolateral approach, polyethylene liner and ceramic head. All implants were cementless. The University of California, Los Angeles (UCLA) activity scores, the High-Activity Arthroplasty Score (HAAS), the visual analogue scale for pain (VAS), and the Harris Hip Score (HHS) were administered to each patient. Patient assessment was conducted on admission, at 12, and at a minimum of 24 months postoperatively. A total of 403 patients were included in the study: 372 SM and 31 DM. The mean age was 56.3 +/- 7.2 years. The mean length of the follow-up was 51.3 +/- 21.0 months. The present clinical trial found no difference in UCLA, HHS, HAAS, and VAS. Patients returned at a similar level of sports activity in both groups. Level of evidence Level II, prospective group-controlled clinical trial.