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Antimicrobial Synthetic Bone Grafts

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. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. Identifier: NCT03945864
Recruitment Status : Recruiting
First Posted : May 10, 2019
Last Update Posted : May 10, 2019
Information provided by (Responsible Party):
NUSRET KOSE, Eskisehir Osmangazi University

Brief Summary:

This project aims to produce synthetic bone tissue graft that supports bone regeneration and combats infection simultaneously, according to industry standards and regulations. This original and high value added biomaterial "silver doped calcium phosphate based synthetic bone tissue " will be used in clinical trials in patients with osteomyelitis and implant-related infections for the treatment.

Chronic bone infections are one of the most important problems in orthopedic surgery and are not just a problem of developed societies. When open fracture cases, which may get infected in 1-50%, implant-related infections and diabetic foot ulcer cases are taken into consideration, osteomyelitis will be seen as a very common problem all over the world. Multiple surgeries, long-term use of antibiotics and the high costs affects all societies. The use of synthetic bone grafts is growing faster than the natural bone grafts in the world. USA has spent 246 million US dollars for the use of synthetic bone graft in 2010. For the treatment of bone infections antibiotic impregnated synthetic bone grafts with different characteristics are used. Although these antibiotic impregnated synthetic bone grafts are superior compared to antibiotic bone cement with the implementation of different antibiotics and to be absorbable but they cannot show optimum benefit because the release of antibiotics is not due to host matrix degradation but diffusion control. The other issue to be considered as this regard that the development of microbial resistance to these antibiotics which is also a serious problem. Innovative synthetic bone graft with better contribution of the needs of mechanical properties, depending on the applied bone region, optimized antimicrobial activity and bone tissue regeneration are needed.

In this study, it will be determined whether this silver ion -doped antimicrobial synthetic bone graft that has the capacity to fill the bone voids that may occur in chronic bone infection during disease process or after surgical debridement, also has the capacity to treat the infection in the bone will be used in 12 patients who had been diagnosed as chronic osteomyelitis to see if it cause any unwanted side effect in normal usage conditions and generates unacceptable risks. Clinical, laboratory and radiological investigations will be used to demonstrate the healing of the infections and the cavities in the bone. Blood and urine levels of silver will be detected from patients.

Antimicrobial activity of silver is well-known. The effectiveness of the silver and potential toxicity is related to the dose of silver and application form. In orthopedics, the use of silver is mostly limited to elemental silver coating of metal implants. There is no biotechnologic approach manufactured silver ion -doped calcium phosphate -based synthetic bone graft in the health sector yet. Ionic silver has advantages such as low toxicity, no tolerance of silver against bacteria, and strong antibacterial activity. The trapping of silver ions in the calcium phosphate based ceramic structure overcomes the other systems with its controlled release and its ability to be effective at minimum doses. The project is an original work since it will contribute to bone regeneration while at the same time removing the infection.

Condition or disease Intervention/treatment Phase
Bone Infection Bone Graft Infection Device: antimicrobial synthetic bone graft Device: parentaral antimicrobials and pure bone grafts Phase 1 Phase 2

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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 12 participants
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Intervention Model Description: experimental group will be compared with parental antibiotics group
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: The Use of Antimicrobial Synthetic Bone Grafts in the Treatment of Bone Infection
Estimated Study Start Date : June 2019
Estimated Primary Completion Date : March 2021
Estimated Study Completion Date : March 2021

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Experimental: antimicrobial synthetic bone graft
This group will have parenteral antibiotics and antimicrobial (silver ions) synthetic bone graft
Device: antimicrobial synthetic bone graft
It will be determined whether the silver ion-doped antimicrobial synthetic bone graft that has the capacity to fill the bone voids also has the capacity to treat the infection in the bone in 12 patients with chronic osteomyelitis

Active Comparator: parenteral antibiotics with pure synthetic bone graft
This group will have parenteral antibiotics and pure synthetic bone graft
Device: parentaral antimicrobials and pure bone grafts
Historical data of the department will be used for comparison of the results

Primary Outcome Measures :
  1. bony healing of the cavities in the bone [ Time Frame: 12 months ]
    Number of Participants with bony healing of the cavities in the bone by x-ray

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 90 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients with chronic osteomyelitis, infected non-union or implant-associated infection with an indication for artificial bone grafting who read and accept the Informed consent.
  • Male and female patients older than 18 years
  • Patients without heart, lung, renal or hepatic failure, epilepsy, cerebrovascular attack or ischemia
  • Patients who are not allergic to antibiotics
  • Patients with additional immunosuppression such as malignancy, diabetes mellitus, poly travma and open fractures
  • Patients using oral or parenteral corticosteroids, methotrexate, cyclosporine or other immunosuppressive drugs

Exclusion Criteria:

  • Patients who have not accepted the method.
  • Patients outside the working age range
  • Pregnant women
  • Patients with heart, lung, renal, hepatic failure, epilepsy, cerebrovascular attack or ischemia
  • Patients with allergy to antibiotics
  • Patients with another silvery implant in the body like a silver-coated implant
  • Patients with a history of known allergies or hypersensitivity to silver

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): NCT03945864

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Contact: Nusret KÖSE, MD 905553112091

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Eskisehir Osmangazi University Hospital Recruiting
Eskişehir, Turkey, 26480
Contact: Nusret Köse, MD    905553112091   
Sponsors and Collaborators
Eskisehir Osmangazi University

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Responsible Party: NUSRET KOSE, Professor of Orthopedics and Traumatology, Eskisehir Osmangazi University Identifier: NCT03945864     History of Changes
Other Study ID Numbers: 2019-2491
First Posted: May 10, 2019    Key Record Dates
Last Update Posted: May 10, 2019
Last Verified: May 2019
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No
Plan Description: After the publication of the study nidividual participant data (IPD) will be available to other researchers.

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Additional relevant MeSH terms:
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Communicable Diseases
Anti-Bacterial Agents
Anti-Infective Agents