title: Lack of early dislocation following total hip arthroplasty with a new dual mobility acetabular design.
abstract: Dual mobility implant designs minimise the risk of dislocation without sacrificing range of motion. Between 1st September 2008 and 31st July 2011, 5 institutions examined early clinical outcomes of a new dual mobility bearing hip system implanted in 485 primary THAs in 452 patients. Patient demographics were 46% female, a mean age of 67 years and a mean BMI of 30. Complications at a minimum of 2 years after surgery included 1 femur fracture, 1 DVT and 4 unrelated deaths. There were no dislocations. For functional outcomes, Harris Hip Scores increased from 41 to 86 (p<0.001), while VAS pain scores decreased from 5.9 to 0.7 (p<0.001). Minimal complications, excellent early clinical outcomes and the absence of early dislocations demonstrate the improved stability of this dual mobility implant system.
authors: 1 Hospital for Special Surgery, New York - USA.
authors: Jonathan M
authors: JM
authors: Vigdorchik
authors: Michele R
authors: MR
authors: D'Apuzzo
authors: David C
authors: DC
authors: Markel
authors: Arthur L
authors: AL
authors: Malkani
authors: Stephen
authors: S
authors: Raterman
authors: Kipling P
authors: KP
authors: Sharpe
authors: Charles N
authors: CN
authors: Cornell
authors: Geoffrey H
authors: GH
authors: Westrich
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects*; D005260:Female; D005500:Follow-Up Studies; D006617:Hip Dislocation / Q000453:epidemiology / Q000209:etiology* / Q000503:physiopathology; D006622:Hip Prosthesis / Q000009:adverse effects*; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery*; D011183:Postoperative Complications; D011474:Prosthesis Design; D011475:Prosthesis Failure; D016059:Range of Motion, Articular / Q000502:physiology*; D012189:Retrospective Studies; D013997:Time Factors; D014481:United States / Q000453:epidemiology; D055815:Young Adult