Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Randomized Controlled Trial
. 2010 Mar;11(1):37-45.
doi: 10.1007/s10195-010-0082-2. Epub 2010 Mar 3.

No differences in outcomes between cemented and uncemented acetabular components after 12-14 years: results from a randomized controlled trial comparing Duraloc with Charnley cups

Kristian Bjørgul  1 , Wendy M Novicoff, S T Andersen, K Brevig, F Thu, M Wiig, O Ahlund
Affiliations
Randomized Controlled Trial

No differences in outcomes between cemented and uncemented acetabular components after 12-14 years: results from a randomized controlled trial comparing Duraloc with Charnley cups

Kristian Bjørgul et al. J Orthop Traumatol. 2010 Mar.

Abstract

Background: Even though there are multiple studies documenting the outcome of the Charnley low-friction arthroplasty as well as abundant studies on uncemented arthroplasties, there is a dearth of comparative studies of the uncemented acetabular component and a cemented component. In this study we aimed to document the long-term clinical and radiographic outcome as well as component survival in a randomized controlled trial.

Materials and methods: Two hundred fifteen patients (240 hips) were randomly allocated to receive a cemented Charnley cup or uncemented Duraloc 1200 cup. All patients received cemented Charnley stems and were evaluated clinically and radiographically after 6 months, and 2, 5, and 10 years.

Results: Harris Hip Scores improved from 48.3 [95% confidence interval (CI) 45.0-51.6] to 90.2 [95% CI 87.9-92.6] in the Charnley group and from 49.3 [95% CI 86.9-91.3] in the Duraloc group at 6 months. After 10 years, the Charnley group's Harris Hip Score was 89.8 [95% confidence interval (CI) 87.0-92.6], and the Duraloc group's score was 87.3 (95% CI 84.1-90.6). In the radiographic analysis after 10 years, there was no statistical difference in the prevalence of radiographic signs of loosening. Nine cups were revised in the Charnley group, and five cups were removed in the Duraloc group. The difference was not statistically significant. There was no statistical difference between the cups when aseptic loosening was the end-point, nor in survival analyses.

Conclusions: There is no statistically significant difference in clinical or radiological outcome between the Charnley cup and the Duraloc after 10 years, and no difference in implant survival after 12-14 years. The uncemented Duraloc cup is as good as the cemented Charnley cup after 10 years.

PubMed Disclaimer

Figures

Fig. 1
Fig. 1
Flow diagram illustrating the flow of hips through the study. Numbers for revision include femoral revisions
Fig. 2
Fig. 2
Survival in days of Charnley and Duraloc acetabular components with revision for any reason as end-point
See this image and copyright information in PMC

Similar articles

See all similar articles

Cited by

See all "Cited by" articles

References

    1. Ethgen O, Bruyere O, Richy F, Dardennes C, Reginster JY (2004) Health-related quality of life in total hip and total knee arthroplasty. A qualitative and systematic review of the literature. J Bone Joint Surg [Am] 86-A:963–974 - PubMed
    1. Harris WH (2003) Results of uncemented cups: a critical appraisal at 15 years. Clin Orthop Relat Res 121–125 - PubMed
    1. Illgen R, Rubash HE. The optimal fixation of the cementless acetabular component in primary total hip arthroplasty. J Am Acad Orthop Surg. 2002;10:43–56. - PubMed
    1. Garellick G, Herberts P, Stromberg C, Malchau H. Long-term results of Charnley arthroplasty. A 12–16-year follow-up study. J Arthroplast. 1994;9:333–340. doi: 10.1016/0883-5403(94)90041-8. - DOI - PubMed
    1. Berry DJ, Harmsen WS, Cabanela ME, Morrey BF (2002) Twenty-five-year survivorship of two thousand consecutive primary Charnley total hip replacements: factors affecting survivorship of acetabular and femoral components. J Bone Joint Surg Am 84-A:171–177 - PubMed

Publication types

MeSH terms