Comparison of hydroxyapatite- and porous-coated stems in total hip replacement

Park, Youn-Soo; Lee, Jong-Yoon; Yun, Sang-Hak; Jung, Min-Wook; Oh, Irvin

doi:10.1080/00016470310014166

Cited by 16 publications

(7 citation statements)

References 11 publications

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“…In the study by Coathup 34 which is mentioned above, no difference in wear between the concepts of fixation was detectable. This is also confirmed by Park 139 and Bauer 8 , who actually found less surface roughness in heads from HA coated THA, compared to porous coated and cemented THA.…”

Section: Hydroxyapatitesupporting

confidence: 76%

“…Several comparative clinical studies deny a beneficial role of HA in the medium-term perspective 139,140 while others suggest an improved fixation radiologically and an improved stress transfer with proximal HA-coating also after five years 41,157,162,189 . Donnelly et al 38 showed less radiolucency, less osteopenia and less osteolysis around the blasted Freeman hip with HA-coating compared to an only blasted prosthesis.…”

Section: Hydroxyapatitementioning

confidence: 99%

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Total hip arthroplasty with an uncemented hydroxyapatite-coated tapered titanium stem: results at a minimum of 10years’ follow-up in 104 hips

Bodén

Salemyr

Sköldenberg

et al. 2006

Journal of Orthopaedic Science

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Section: Hydroxyapatitesupporting

confidence: 76%

Section: Hydroxyapatitementioning

confidence: 99%

Total hip arthroplasty with an uncemented hydroxyapatite-coated tapered titanium stem: results at a minimum of 10years’ follow-up in 104 hips

Bodén

Salemyr

Sköldenberg

et al. 2006

Journal of Orthopaedic Science

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“…In several studies, HA-coated titanium stems were implanted on one side and identical stems without an HA coating were inserted on the opposite side. It was found that HA coating did not influence radiological results or clinical performance of these stems in the medium-term (Kim et al 2003, Park et al 2003). Recently published meta-analyses of HA-coated femoral stems in primary THA have also supported the notion that HA coating does not improve the survival of uncemented stems (Gandhi et al 2009, Goosen et al 2009).…”

Section: Discussionmentioning

confidence: 97%

Effects of hydroxyapatite coating on survival of an uncemented femoral stem

2011

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Background and purposeHydroxyapatite (HA) is widely used as a coating for uncemented total hip arthroplasty components. This has been suggested to improve implant ingrowth and long-term stability. However, the evidence behind the use of HA coating on femoral stems is ambiguous. We investigated survival of an uncemented, tapered titanium femoral stem that was available either with or without HA coating (Bi-Metric).Patients and methodsThe stem had been used in 4,772 total hip arthroplasties (THAs) in 4,169 patients registered in the Swedish Hip Arthroplasty Register between 1992 and 2009. 59% of the stems investigated were coated with HA and 41% were uncoated. Kaplan-Meier survival analysis and a Cox regression model with adjustment for age, sex, primary diagnosis, and the type of cup fixation were used to calculate survival rates and adjusted risk ratios (RRs) of the risk of revision for various reasons.ResultsThe 10-year survival rates of the HA-coated version and the uncoated version were about equal when we used revision for any reason as the endpoint: 98% (95% CI: 98–99) and 98% (CI: 97–99), respectively. A Cox regression model adjusting for the covariates mentioned above showed that the presence of HA coating did not have any influence on the risk of stem revision for any reason (RR = 1.0, 95% CI: 0.6–1.6) or due to aseptic loosening (RR = 0.5, CI: 0.2–1.5). There was no effect of HA coating on the risk of stem revision due to infection, dislocation, or fracture.InterpretationThe uncemented Bi-Metric stem showed excellent 10-year survival. Our findings do not support the use of HA coating on this stem to enhance implant survival.

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“…Although a fully HA-coated stem is expected to induce greater bone apposition, wider trabecular struts, and more connectivity compared with half HA-coated stems [2], or tapered corundum-blasted titanium stems [1], it is not clear if the HA coating has any role in better preserving bone stock, with studies showing good bony integration with uncemented nonbioactive surface implants [7,18].…”

Section: Discussionmentioning

confidence: 99%

Periprosthetic Bone Remodeling after 12 Years Differs in Cemented and Uncemented Hip Arthroplasties

Chandran

Azzabi

Andrews

et al. 2012

Clinical Orthopaedics &Amp; Related Research

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Background Different patterns of stress shielding may lead to differences in periprosthetic bone preservation around cemented and uncemented hips in the long term? Questions/purposes The purpose of this study is to compare the difference in periprosthetic bone density between cemented Charnley total hip and uncemented hydroxyapatite-coated Furlong 1 THAs at a minimum followup of 12 years (mean, 16 years; range, 12-24 years). Methods We studied a cohort of 17 patients who had bilateral THAs with a cemented Charnley THA on one side and an uncemented Furlong 1 hydroxyapatite-coated THA on the other side. At a minimum followup of 12 years, Harris and Oxford hip scores were used to determine the function, and dual-energy x-ray absorptiometry was used to quantify bone mineral density adjacent to the prosthesis.The results of the dual-energy x-ray absorptiometry scan for cemented and uncemented hips were analyzed using paired-sample two-tailed t-tests. To compare the Harris hip scores, a nonparametric Wilcoxon test was used.

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Comparison of hydroxyapatite- and porous-coated stems in total hip replacement

Cited by 16 publications

References 11 publications

Total hip arthroplasty with an uncemented hydroxyapatite-coated tapered titanium stem: results at a minimum of 10years’ follow-up in 104 hips

Total hip arthroplasty with an uncemented hydroxyapatite-coated tapered titanium stem: results at a minimum of 10years’ follow-up in 104 hips

Effects of hydroxyapatite coating on survival of an uncemented femoral stem

Periprosthetic Bone Remodeling after 12 Years Differs in Cemented and Uncemented Hip Arthroplasties

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