Arthrocentesis Study

August 20, 2015 updated by: Andrej Trampuz, Charite University, Berlin, Germany

Early Diagnostics of Septic Arthritis and Periprosthetic Joint Infections With Calorimetry and Polymerase Chain Reaction (PCR) of Synovial Aspirate Fluid

The purpose of this study is to analyze pre- and intra-operative joint aspirates of native joints and joints with suspicion of periprosthetic joint infection (PJI) of the hip, knee and shoulder acquired in clinical routine. Joint aspirates are then analyzed with new diagnostic methods (microcalorimetry, PCR, alpha-defensin, etc.). Diagnostic speed and accuracy of these methods is compared to standard diagnostic methods in clinical routine, such as blood cultures of joint aspirates, cell count/differential, intra-operative tissue culture and histology and sonication.

Study Overview

Status

Unknown

Conditions

Detailed Description

In this study, joint aspirate of patients that undergo joint aspiration in the context of routine pre- and intra-operative clinical diagnosis of a hip, knee or shoulder joint is collected. Routine joint punctures at our clinic are regularly performed in the emergency room, in the outpatient clinic and intra-operatively during diagnostic and revision surgery. A minimum of 5 ml aspiration fluid was required for inclusion in this study. Empty or diluted aspirations were excluded.

Joint aspirations are performed by orthopaedic surgeons with an 18-gauge needle according to standardized aseptic technique. Intraoperative punctures are performed prior to arthrotomy. A minimum of 1ml of joint aspirate is immediately transferred to a native study vial for our study, a native vial for gram stain and culture and a native vial for polarization microscopy, respectively. A minimum of 1 ml joint aspirate is transferred to an ethylenediaminetetraacetic acid (EDTA) vial for the determination of leucocyte count. Finally, a minimum of 1 ml is inoculated into a paediatric blood culture bottle.

Standard microbiological methods are performed in an external laboratory that routinely collaborates with our clinic. Leucocyte count is performed automatically with the mentioned EDTA vial. Polarization microscopy is performed at our pathohistological department in order to detect crystals and signs of infection in joint aspirate.

If written informational consent has been signed by the patient, the study vial is immediately transported to our internal laboratory for analysis with new diagnostic methods (microcalorimetry, PCR, etc.). When an immediate transportation was not feasible, the vial is stored in a cooling fridge at +3° C until transportation was possible.

Each case is individually reviewed and classified by an experienced infectiologist taking the case's clinical history and laboratory results into account.

Study Type

Observational

Enrollment (Anticipated)

400

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

  • Germany
      • Berlin, Germany, 17110
        • Recruiting
        • Charite University Berlin
        • Contact:
        • Principal Investigator:
          • Andrej Trampuz, MD
        • Sub-Investigator:
          • Christian Morgenstern, MD,PhD

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

Any patient with suspicion of septic arthritis or periprosthetic joint infection of the hip, knee and shoulder being diagnosed or treated in our facility in a clinical routine scenario willing to participate in this study (written informational consent)

Description

Inclusion Criteria:

  • adult of 18 or more years
  • written consent to participate in study
  • suspicion of septic arthritis or periprosthetic joint infection
  • joint aspirate minimum of 5 ml

Exclusion Criteria:

  • is not able to understand the aim or purpose of this study
  • empty joint aspirate

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Periprosthetic joint infection
Patients with suspected periprosthetic joint infection of the hip, knee and shoulder
Septic arthritis
Patients with suspected septic arthritis of a native joint of the hip, knee and shoulder

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
growth of microbial agent in culture of joint aspirate
Time Frame: 14 days
14 days

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Charite University, Berlin, Germany

Collaborators

Berlin Institute of Health

Investigators

  • Principal Investigator: Andrej Trampuz, MD, Charite University Berlin

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

November 1, 2014

Primary Completion (Anticipated)

November 1, 2016

Study Completion (Anticipated)

November 1, 2016

Study Registration Dates

First Submitted

August 19, 2015

First Submitted That Met QC Criteria

August 20, 2015

First Posted (Estimate)

August 21, 2015

Study Record Updates

Last Update Posted (Estimate)

August 21, 2015

Last Update Submitted That Met QC Criteria

August 20, 2015

Last Verified

August 1, 2015

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • EA1/306/14

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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