Asymptomatic intraprosthetic dual mobility cup dislocation with increased metal ion levels

Early intraprosthetic dislocation in dual-mobility implants: a systematic review

BACKGROUND Dual mobility implants are subject to a specific implant-related complication, intraprosthetic dislocation (IPD), in which the polyethylene liner dissociates from the femoral head. For older generation designs, IPD was attributable to late polyethylene wear and subsequent failure of the head capture mechanism. However, early IPDs have been reportedly affecting contemporary designs. ...

Early Intraprosthetic Dislocation of A Dual Mobility Acetabular Construct

Dislocations represent one of the more common postoperative complications seen after total hip arthroplasty (THA) with estimates ranging from 0.2 to 7% in primary cases and as high as 25% in revision surgeries [1]. In the early 1970s, Giles Bousquet developed a dual mobility (DM) acetabular cup with the goal of reducing dislocation rates. The dual mobility (DM) design consists of two articulati...

Intraprosthetic dislocation of a contemporary dual-mobility design used during conversion THA.

Although dual-mobility sockets have been in clinical use for decades in other parts of the world, they recently gained popularity in the United States as an option for primary and revision total hip arthroplasty (THA). Improvements in dual-mobility socket technology include articulation with a metal insert impacted into a metal shell and a femoral head made of highly cross-linked polyethylene. ...

Early Intraprosthetic Dislocation of a Dual Mobility Acetabular Construct after Total Hip Arthroplasty

INTRODUCTION The concept of a dual mobility (DM) cup has been in existence for more than 40 years and was initially popularized in Europe. Only recently has it started to garner attention in the United States. Its design, consisting of a small femoral head articulating within a larger polyethylene (PE) insert, which articulates with an outer shell, has found increasing use in patients that are ...

Letter to the editor on “Early intraprosthetic dislocation in dual-mobility implants: a systematic review”