title: Dual mobility in total hip arthroplasty.
abstract: Dual-mobility articulations have shown promising results. Postoperative instability remains the most common reason for revision of a total hip arthroplasty (THA). Dual-mobility cups have been shown to decrease the rate of dislocation in primary THA and have been used to treat and prevent instability in revision THA. Greater range of motion and a greater head-to-neck ratio and a greater jump distance are achieved, resulting in a lower risk of instability. Concerns with dual-mobility cups include wear and intraprosthetic dislocation. Specific design modifications have aimed to improve cup fixation and decrease polyethylene wear and the risks of intraprosthetic dislocation.
authors.affiliation: Department of Orthopaedic Surgery, Rush University Medical Center, 1611 West Harrison Street, Suite 300, Chicago, IL 60612, USA.
authors.forename: Darren R
authors.initials: DR
authors.lastname: Plummer
authors.forename: Bryan D
authors.initials: BD
authors.lastname: Haughom
authors.forename: Craig J
authors.initials: CJ
authors.lastname: Della Valle
mesh_terms: D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects / Q000379:methods / Q000706:statistics & numerical data; D001696:Biomechanical Phenomena; D019544:Equipment Failure Analysis / Q000706:statistics & numerical data; D006617:Hip Dislocation / Q000209:etiology / Q000503:physiopathology / Q000517:prevention & control; D006621:Hip Joint / Q000503:physiopathology / Q000601:surgery*; D006622:Hip Prosthesis / Q000592:standards* / Q000706:statistics & numerical data; D006801:Humans; D007593:Joint Instability / Q000209:etiology / Q000503:physiopathology / Q000517:prevention & control; D015201:Meta-Analysis as Topic; D017063:Outcome Assessment, Health Care; D011474:Prosthesis Design; D011475:Prosthesis Failure / Q000209:etiology; D016059:Range of Motion, Articular; D020127:Recovery of Function; D012086:Reoperation / Q000379:methods / Q000706:statistics & numerical data; D014481:United States
keywords: Dislocation; Dual-mobility; Revision total hip arthroplasty; Total hip arthroplasty