[Complications in total hip arthroplasty with double mobility prosthesis: Experience in a third level hospital].

Introduction: total hip arthroplasty (THA) is a successful surgical intervention for end-stage hip arthritis, however, it is not extent for complications. The risk of instability after THA with conventional design is up to 7% for primary procedures and 5-20% for revisions. The purpose of this study is to document the complications that occur with the double mobility prosthetic design.

Materials and methods: observational, longitudinal, retrospective and descriptive study. A sample of 542 patients undergoing primary THA using a double mobility design was included, complications occurring from December 1, 2015 to December 31, 2021 were recorded.

Results: the complications that occurred were: 13 (2.39%) patients with postoperative dislocation, five (0.92%) with periprosthetic fracture, five (0.92%) with transient neuropraxia of the sciatic nerve, three (0.55%) with periprosthetic infection, one (0.18%) with chronic pain and one (0.18%) with pulmonary thromboembolism.

Conclusions: the double mobility design is an appropriate option to reduce the risk of prosthetic dislocation in patients undergoing total hip arthroplasty.