gms | German Medical Science

Purpose: Dual mobility cup introduced in France by Gilles Bousquet has been used in total hip replacement in high risk patients. This device is acting as a big ball implant and significantly reduces the risk of dislocation following hip arthroplasty. Published French literature had focused low rates of dislocation and long term follow-up similar to the low friction arthroplasty.

Methods: We reviewed retrospectively a continuous series of 105 cases of dual mobility cup Quattro (Groupe lépine Genay - France) implanted from 2000 to 2002. Selection of the patient requiring a primary hip replacement was depending on risk criteria as age, hip disease and activity score. The dual mobility cup was associated with a modular cemented femoral component and a 22.2 mm stainless steel head.

Results: One dislocation occurred one month after the index surgery requiring no revision surgery. According to Kaplan-Meier method, survival probability was 95.0% 95%CI[81.5-98.8] at 10 years of follow-up.

Conclusions: Based on clinical outcome and patient assessment we conclude that dual mobility cup is a reliable option to decrease dislocation risk without increasing polyethylene wear.