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Determination of Metal Ion Serum Levels and Cytokines in Total Hip Replacement

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01394744
Recruitment Status : Active, not recruiting
First Posted : July 14, 2011
Last Update Posted : September 5, 2017
DePuy Orthopaedics
Information provided by (Responsible Party):
Peter Thomas, Ludwig-Maximilians - University of Munich

Brief Summary:

The goal of the study is the analysis of metal ion serum concentrations and of the cytokine production in the blood of patients with a conventional cementless total hip replacement. The rationale is that a) the bearing wear releases particles respectively metal ions into the joint and the blood which will differ in quantity and composition; b) the cytokine production of peripheral blood mononuclear cells (PBMC) might be influenced to a varying degree by the metal and the ceramic particles.

The patients from whom the respective samples will be analyzed are randomized in one of the following three groups: metal-on-metal, ceramic-on-ceramic or ceramic-on-metal. A 36mm bearing is used in all patients. In this separate study, follow-up data of the clinical and radiographic examinations of the patients are available.

Condition or disease
Hip Replacement Arthroplasty

Study Type : Observational
Actual Enrollment : 30 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: Determination of Metal Ion Levels in the Serum and Assessment of the Respective Cytokine Production of Peripheral Blood Cells in Patients With a Hard-on-hard Bearing Total Hip Replacement
Study Start Date : August 2011
Estimated Primary Completion Date : November 2017
Estimated Study Completion Date : January 2018

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Hip Replacement
U.S. FDA Resources

Biospecimen Retention:   Samples Without DNA
Blood serum samples for metal ion and cytokine measurement; blood cells for cytokine-RNA assessment

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 75 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
total of 30 subjects; 10 with metal-on-metal, 10 with ceramic-on-ceramic and 10 with ceramic-on-metal hip replacement;

Inclusion Criteria:

  • age over 18 years, necessity of hip replacement, informed consent

Exclusion Criteria:

  • acute inflammatory disease, renal disease, other cobalt-chromium implant, ager over 75 years

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01394744

Ludwig-Maximilians-University Munich, Dept. of Dermatology
Munich, Bavaria, Germany, 80337
ARCUS Sportklinik
Pforzheim, Germany, 75179
Sponsors and Collaborators
Ludwig-Maximilians - University of Munich
DePuy Orthopaedics
Principal Investigator: Peter Thomas, Prof. Ludwig-Maximilans-University

Responsible Party: Peter Thomas, Prof. Dr., Ludwig-Maximilians - University of Munich Identifier: NCT01394744     History of Changes
Other Study ID Numbers: 10-1739 / IIS2009029
First Posted: July 14, 2011    Key Record Dates
Last Update Posted: September 5, 2017
Last Verified: September 2017

Keywords provided by Peter Thomas, Ludwig-Maximilians - University of Munich:
hip arthroplasty
cytokine profile