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

This study is ongoing, but not recruiting participants.
DePuy Orthopaedics
Information provided by (Responsible Party):
Peter Thomas, Ludwig-Maximilians - University of Munich Identifier:
First received: July 13, 2011
Last updated: September 1, 2017
Last verified: September 2017

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.

Hip Replacement Arthroplasty

Study Type: Observational
Study Design: 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

Resource links provided by NLM:

Further study details as provided by Peter Thomas, Ludwig-Maximilians - University of Munich:

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

Enrollment: 30
Study Start Date: August 2011
Estimated Study Completion Date: January 2018
Estimated Primary Completion Date: November 2017 (Final data collection date for primary outcome measure)

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
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: 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
  More Information

Responsible Party: Peter Thomas, Prof. Dr., Ludwig-Maximilians - University of Munich Identifier: NCT01394744     History of Changes
Other Study ID Numbers: 10-1739 / IIS2009029
Study First Received: July 13, 2011
Last Updated: September 1, 2017

Keywords provided by Peter Thomas, Ludwig-Maximilians - University of Munich:
hip arthroplasty
cytokine profile processed this record on September 21, 2017