Comparative study of total hip arthroplasties with dual mobility cups versus hemiarthroplasties: Survival and dislocation rate at 5 years of follow-up?

Introduction: The purpose of this study was to summarise the performance of dual-mobility cup systems for revision total hip arthroplasty in patients with abductor-trochanteric complex deficiency. Methods: We prospectively followed 17 patients (20 hips) with a mean age of 64.5 years (range 33-89 years) who underwent acetabular reconstruction with dual-mobility cups for aseptic loosening in 12 hips, infection treatment as second or single stage in 6 hips, and instability in 2 hips. All of the patients had abductor insufficiency. We evaluated the clinical Harris Hip scores (HHS) and radiographs for migration, loosening, and osteolysis. The survival of the components was calculated according to Kaplan-Meier survivorship analysis, and failure was defined as any dislocation, acetabular component or total hip revision for any reason. Results: The mean duration of follow-up was 38.1 months (range 24-98 months). There were 2 (12.5%) revisions for cemented cup migration after 11 months and 19 months respectively. There were no dislocations. At the last follow-up, the mean HHS increased from 42 points preoperatively to 86 points. The cumulative survival rate of the dual-mobility cup system was 93% (95% confidence interval 88-98.7%) at 5 years, with any revision as the end point. Conclusion: Dual-mobility cups may provide excellent stability in patients with abductor-trochanteric complex insufficiency.

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Dual Mobility Cups: An Effective Prosthesis in Revision Total Hip Arthroplasties for Preventing Dislocations

Hip International ◽

10.5301/hipint.5000295 ◽

2015 ◽

Vol 26 (1) ◽

pp. 57-61 ◽

Cited By ~ 27

Author(s):

Julio J. Jauregui ◽

Todd P. Pierce ◽

Randa K. Elmallah ◽

Jeffrey J. Cherian ◽

Ronald E. Delanois ◽

...

Keyword(s):

Dual Mobility ◽

Total Hip ◽

Dual Mobility Cups ◽

Hip Arthroplasties

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Minimum 7-Year Outcomes of Dual Mobility Acetabular Cups in Total Hip Arthroplasty Patients

The Journal of Hip Surgery ◽

10.1055/s-0040-1713109 ◽

2020 ◽

Vol 04 (02) ◽

pp. 090-093

Author(s):

John M. Tarazi ◽

Hytham S. Salem ◽

Joseph O. Ehiorobo ◽

Nipun Sodhi ◽

Luke J. Garbarino ◽

...

Keyword(s):

Total Hip Arthroplasty ◽

Hip Arthroplasty ◽

Study Cohort ◽

Dual Mobility Cup ◽

Dual Mobility ◽

Total Hip ◽

Patient Reported ◽

Dual Mobility Cups ◽

Metallic Liner

AbstractModular dual mobility cups have been developed to potentially address postoperative hip instability, which can occur in nearly 20% of all revision total hip arthroplasty (THA) patients. By having a prosthetic construct that contains two points of articulation between the femoral head and liner and between the liner and shell, joint stability can be increased. The purpose of this study was to report on dual mobility cup survivorships, patient satisfaction outcomes, complications, and radiographic outcomes at a minimum 7-year follow-up. A high-volume academic surgeon performed a total of 143 consecutive dual mobility primary THAs on patients who had a minimum follow-up of 7 years (range, 7–8.5 years). The study cohort consisted of 77 females (54%) and 66 males (46%) who had a mean age of 65 years (range, 34–90 years). Aseptic, septic, and all-cause survivorship was determined by Kaplan-Meier analysis. Harris Hip Scores (HHS), postoperative complications, and radiographs were also assessed. No cup failures were observed. Overall, septic survivorship was 99.3% (95% confidence interval [CI]: 0.98–1.0) and all-cause survivorship was 98.6% (95% CI: 0.97–1.0). Two patients (1.4%) required revision surgery unrelated to the use of a modular dual mobility cup. Of these, one patient experienced femoral stem loosening and the other developed a periprosthetic infection that was treated with a two-stage revision. The mean total HHS was above 95 points at the most recent follow-up. Three patients (2.3%) experienced medical complications, including two deep vein thromboses and one for nonfatal pulmonary embolism. Radiographic evidence revealed incomplete seating of the metallic liner in one patient. Dual mobility cups were developed in an attempt to decrease the rate of instability following THA. The results from this study indicate that excellent clinical and patient-reported outcomes can be achieved at 7-year follow-up in patients who undergo THA with a dual mobility cup. Therefore, dual mobility cups appear to be an appropriate treatment option for primary THA.

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Dislocation Rate at Short-term Follow-up after Revision Total Hip Arthroplasty with a Dual Mobility Component

The Duke Orthopaedic Journal ◽

10.5005/jp-journals-10017-1064 ◽

2016 ◽

Vol 6 (1) ◽

pp. 17-20 ◽

Cited By ~ 1

Author(s):

Samuel S Wellman ◽

David E Attarian ◽

Taylor R McClellan ◽

Roberto D Calderon ◽

Paul F Lachiewicz

Keyword(s):

Total Hip Arthroplasty ◽

Acetabular Component ◽

Hip Arthroplasty ◽

Dislocation Rate ◽

Revision Total Hip Arthroplasty ◽

Short Term ◽

Dual Mobility ◽

Total Hip ◽

Increased Risk

ABSTRACT Patients undergoing a revision total hip arthroplasty (THA) are at increased risk for dislocation. The literature suggests dual-mobility components may decrease the frequency of dislocation. We conducted a retrospective study of one type of dual mobility acetabular component implanted in 82 revision THA cases that were considered at increased risk for dislocation. Of the 82 hips, 58 had a mean follow-up of 12 months (3–28 months). The indication for revision was instability in 18 hips (31%), adverse metal-on-metal reaction in 13 hips (22%), reimplantation for infection in 11 hips (19%), and aseptic loosening of the acetabular component in 9 hips (16%). In the course of follow-up, 6 hips developed a deep infection requiring reoperation. There were no early hip dislocations. McClellan TR, Calderon RD, Bolognesi MP, Attarian DE, Lachiewicz PF, Wellman SS. Dislocation Rate at Short-term Follow-up after Revision Total Hip Arthroplasty with a Dual Mobility Component. The Duke Orthop J 2016;6(1):17-20.

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