Metal Ion Levels in Ceramic-on-Ceramic THR with Modular Necks:                     Analysis of Cobalt and Chromium Serum Levels in 30 Healthy Hip                     Patients

Somers, Jan F A

doi:10.5301/hipint.5000257

Cited by 12 publications

(5 citation statements)

References 18 publications

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“…Also, clinical results at long-term were good. We have shown that the systemic levels of Co and Cr in patients, treated with this cemented CoCr stem and a Ti modular neck, is low when used with conventional head diameters (18). In this study of asymptomatic high activity patients no patient was shown to have elevated Co ion levels and all patients had Cr ion levels below the detection limit.…”

Section: Discussionmentioning

confidence: 98%

Excellent Mid-Term Results of a New Polished Tapered Modular Cemented Stem: A Study of 113 Hip Replacements with Minimum 5-Year Follow-Up

Vanbiervliet

Somers

2017

HIP International

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Section: Discussionmentioning

confidence: 98%

Excellent Mid-Term Results of a New Polished Tapered Modular Cemented Stem: A Study of 113 Hip Replacements with Minimum 5-Year Follow-Up

Vanbiervliet

Somers

2017

HIP International

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“…The alarmingly high systemic Co levels, as measured in the serum of these patients with a CoCr femoral component, is probably due to the trunnion of the modular neck, since only the femoral component contains Co and Cr. We have shown that the systemic level of Co and Cr in modular necks of this design (Ti alloy neck coupled with a cemented CoCr stem) is low when used with conventional head diameters (23). In contrast with the results from Bosker et al (3), our results show no patients with osteolysis and a relatively low rate of ALTR (7.5%) at 3-year FU.…”

Section: Discussionmentioning

confidence: 98%

High Serum Ion Levels in Conserve plus Big Femoral Head Cemented Total Hip Arthroplasty

Somers

Straeten

Coninck³

2016

HIP International

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“…Two studies were published by Somers et al [ 24 , 25 ]. In the first study, 30 patients underwent THA with a hybrid THR Profemur ® Xm - Procotyl ® L prosthesis, with a Ti modular neck on a CoCr stem design and CoC bearing.…”

Section: Discussionmentioning

confidence: 99%

Effect of Femoral Stem Modular Neck’s Material on Metal Ion Release

Barry

Kiss

Massé

et al. 2017

TOORTHJ

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Background:In recent decades, the popularity of modular necks in total hip arthroplasty (THA) has increased since modular necks offer the potential to restore the patient’s native anatomy, and thus improve stability. Unfortunately, modular necks are associated with higher complication rates, including implant fracture and modular junction corrosion with adverse local tissue reaction to metal debris.Objective:The objective of this study was to determine the impact of modular neck material on titanium (Ti), chrome (Cr), and cobalt (Co) metal ion levels in patients who underwent a THA with Ti femoral stem, Ti or CrCo modular neck, and ceramic-on-ceramic (CoC) bearing.Methods:Whole blood Ti, Cr, and Co levels were compared at a minimum 1-year follow-up in 36 patients who underwent unilateral, primary CoC large-diameter head THA with Profemur® Preserve modular femoral stems (MicroPort, Arlington, TX, USA).Results:Higher Co concentrations were observed in the CrCo modular neck group (0.46 versus 0.26 µg/l in the Ti neck group, P=0.004) and higher Ti concentrations were observed in the Ti modular neck group (1.98 vs 1.59 µg/l in the CrCo neck group, P=0.007). However, these differences were not clinically meaningful since the absolute values remained within what is considered the safe range of Ti, Cr, and Co ions in whole blood. No patients were re-operated or revised.Conclusion:Modular neck materials had an impact on whole blood metal ion levels but the concentrations measured remained within the safe range at 1-year follow-up. There were no indirect signs of modular junction corrosion with either CrCo or Ti femoral necks.

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Metal Ion Levels in Ceramic-on-Ceramic THR with Modular Necks: Analysis of Cobalt and Chromium Serum Levels in 30 Healthy Hip Patients

Abstract: The hybrid THR Profemur® Xm - Procotyl® L with a titanium modular neck on a cobalt-chrome stem design shows no signs of abnormal toxic ion levels (cobalt or chromium) in a randomly selected group of well-functioning hip patients.

Cited by 12 publications

References 18 publications

Excellent Mid-Term Results of a New Polished Tapered Modular Cemented Stem: A Study of 113 Hip Replacements with Minimum 5-Year Follow-Up

Excellent Mid-Term Results of a New Polished Tapered Modular Cemented Stem: A Study of 113 Hip Replacements with Minimum 5-Year Follow-Up

High Serum Ion Levels in Conserve plus Big Femoral Head Cemented Total Hip Arthroplasty

Effect of Femoral Stem Modular Neck’s Material on Metal Ion Release

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