Multicenter Evaluation of a Modular Dual Mobility Construct for Revision Total Hip Arthroplasty
| Autor: | William J. Hozack, Ronald C. Huang, Geoffrey H. Westrich, Steven F. Harwin, Michael A. Mont, Carlos A. Higuera-Rueda, Art L. Malkani |
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| Rok vydání: | 2018 |
| Předmět: |
musculoskeletal diseases
Joint Instability Male Reoperation medicine.medical_specialty Time Factors Arthroplasty Replacement Hip Prosthesis Design Cohort Studies 03 medical and health sciences 0302 clinical medicine Postoperative Complications medicine Humans Orthopedics and Sports Medicine Recurrent instability Postoperative Period Range of Motion Articular Aged Retrospective Studies 030222 orthopedics business.industry Retrospective cohort study Acetabulum Middle Aged equipment and supplies Dual mobility United States Surgery Acetabular component Cohort Female Level iii Hip Prosthesis business Range of motion Total hip arthroplasty |
| Zdroj: | The Journal of arthroplasty. 34(7S) |
| ISSN: | 1532-8406 |
| Popis: | Introduction Modular Dual Mobility (MDM) constructs in total hip arthroplasty (THA) offer increased hip stability compared with constrained liners, without compromising hip range of motion. The purpose of this study was to evaluate outcomes of revision THA using MDM. Methods The study was a multiinstitutional retrospective cohort study of 315 hips that underwent revision THA using MDM between 2011 and 2017. Clinical outcomes and reasons for failure were collected. Results Three hundred fifteen patients met 1-year minimum follow-up (mean 3.3 years). Nine hips had instability postoperatively (2.9%), and 30 hips required reoperation (9.5%). Seven had recurrent instability (6.5%) which was associated with liner-only exchange (P = .021) and liner outer diameter of ≤ 38 mm (P = .016). Conclusion Revision THA with MDM provided a low rate of instability and reoperation in a revision cohort. Recurrent instability following use of MDM in revision THA was associated with retention of the acetabular component and polyethylene outer diameter ≤ 38 mm. Level of Evidence Therapeutic Level III. |
| Databáze: | OpenAIRE |
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