ClinicalTrials.gg
CompletedNCT00829621Updated Nov 7, 2016Results posted

Incisional Vacuum Assisted Closure (IVAC) Device and Its Effect on Implanted Bone Morphogenic Protein (BMP-2)

An interventional study of 75 mmHg suction and 125 mmHg in Fractures, Closed, sponsored by University of Missouri-Columbia. Completed at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2016-11-07.

Sponsored by University of Missouri-Columbia · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
20
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

People who have been scheduled for surgery using Bone Morphogenic Protein (called BMP-2) and an incisional vacuum assisted closure device (called IVAC) will be asked to join this study.

The purpose of this study is to see if using the IVAC device removes BMP-2 from the wound. BMP-2 is a protein used by the body to increase bone healing, decrease the need for additional surgery, and reduce infection rates.

The IVAC is a device that involves a foam dressing secured with an adhesive drape to make an airtight seal over a surgical incision. Tubing runs from the foam dressing to a device that uses gentle suction to drain fluid out (like a vacuum). The IVAC stays on for 48-72 hours depending on amount of drainage. The IVAC by itself helps reduce wound swelling and complications (such as infection).

Read the detailed description

It is hypothesized that the negative pressure associated with an IVAC is not sufficient to remove BMP-2 from a surgical wound.

BMP-2 is commonly used in open tibia fractures at the time of definitive wound closure, and these wounds are prone to increased swelling and wound complications. The recent observation that IVAC decreases wound edema and increases oxygenation has led to their use in such cases. Used in conjunction, it is entirely possible that the negative pressure exerted by the IVAC can remove BMP-2 from surgical site and therefore decreases the effectiveness of BMP-2. We seek to determine if BMP-2 is present in effluent from the IVAC. If in this study the hypothesis is found to be wrong, and BMP-2 is found within the IVAC effluent, we are prepared to proceed with a follow-up study to quantify the BMP-2 removed by the IVAC.

02

Conditions studied

  • Fractures, Closed

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Keywords

  • BMP-2
  • Incisional Vacuum Assisted Closure (IVAC)
03

In context

Fractures, Closed

44 studies on the registry are indexed under Fractures, Closed; 4 are open to participants now.

This study's enrollment of 20 is below the median of 45 across 34 interventional studies indexed under Fractures, Closed.

Browse Fractures, Closed studies →

Lead sponsor

University of Missouri-Columbia is the lead sponsor of 365 studies on the registry; 69 are open to participants now.

Of its 43 completed or terminated interventional studies of FDA-regulated products, 29 (67%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Subject is 18 years or older
  • Subject has tibia fracture requiring treatment with BMP-2
  • Subject to have an Incisional Vacuum Closure (IVAC) Device, placed on the skin directly over the BMP-2 implantation site
  • Subject/guardian able to provide

Exclusion criteria

Exclusion Criteria:

  • Subject is less than 18 years old
  • Subject has a wound at fracture/surgical site that cannot be closed
  • Subject/guardian unable to provide
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
20 participants (actual)

Study arms

  • Active comparator
    75 mmHg suction

    IVAC suction 75 mmHg

    Other: 75 mmHg suction

  • Experimental
    125 mmHg suction

    IVAC suction 125 mmHg

    Other: 125 mmHg

Interventions

  • Other75 mmHg suction

    Incisional Vacuum Assisted Closure (IVAC) Device, set to 75 mmHg suction throughout the duration of the IVAC use.

  • Other125 mmHg

    Incisional Vacuum Assisted Closure (IVAC) Device, set to 125 mmHg suction throughout the duration of the IVAC use.

06

What researchers measure

Primary outcomes

  1. Presence of BMP-2 in Effluent Collected in IVAC Canister

    Presence of BMP-2 in effluent collected in IVAC canister

    Time frame: 12-hours, 24-hours, 36-hours, and 48-hours after IVAC application

07

Results

Posted Feb 21, 2014

Participant flow

Participant flow — Overall Study
Milestone75 mmHg125 mmHg
Started812
Completed48
Not completed44
Withdrew: Death10
Withdrew: Lost to follow-up34

Outcome measures

PrimaryPresence of BMP-2 in Effluent Collected in IVAC Canister

Presence of BMP-2 in effluent collected in IVAC canister

Time frame:
12-hours, 24-hours, 36-hours, and 48-hours after IVAC application
Reported as:
Number · participants
Presence of BMP-2 in Effluent Collected in IVAC Canister
participants75 mmHg125 mmHg
Presence of BMP-2 in Effluent Collected in IVAC Canister611
Statistical analysis
  • 75 mmHg vs 125 mmHg · t-test, 1 sided · p = =0.36

Adverse events

Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
75 mmHg—1/8 (12.5%)1/8 (12.5%)
125 mmHg—1/12 (8.3%)0/12 (0%)
Most frequent serious events
Most frequent serious events
Event75 mmHg125 mmHg
died secondary to chronic renal failureRenal and urinary disorders1/80/12
wound infectionInfections and infestations1/81/12
pulmonary embolisRespiratory, thoracic and mediastinal disorders0/81/12
nonunionMusculoskeletal and connective tissue disorders0/81/12
Most frequent other events
Most frequent other events
Event75 mmHg125 mmHg
delayed unionMusculoskeletal and connective tissue disorders1/80/12

Baseline characteristics

Age, Continuous
Age, Continuous(years)75 mmHg125 mmHgTotal
Mean45 ± 17.542.1 ± 16.643 ± 17
Sex: Female, Male
Sex: Female, Male(Participants)75 mmHg125 mmHgTotal
Female336
Male5914
08

Study locations

1 site
  • University of Missouri
    Columbia, Missouri 65212, United States
09

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

10

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Dec 2008, a primary completion of May 2012 and a completion of Dec 2013. It does not say whether these dates are actual or estimated.

Results were first posted in Feb 2014, 1 year 9 months after primary completion.

How these figures are worked out, and which studies are left out of them.

Registered
Jan 26, 2009
First posted
Jan 27, 2009
Start
Dec 2008
Primary completionActual
May 2012
CompletionActual
Dec 2013
Results first posted
Feb 21, 2014
Last update
Nov 7, 2016
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Nov 7, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT00829621
Collaborators
Medtronic
Responsible party
Brett Crist (Assistant Professor, Co-Director of Trauma Services, Co-Director Trauma Fellowship, Department of Orthopaedic Surgery, University of Missouri-Columbia) — Principal investigator
First posted
Jan 27, 2009
Start date
Dec 2008
Primary completion
May 2012
Completion
Dec 2013
Results posted
Feb 21, 2014
Last update
Nov 7, 2016

Study contacts

Brett D. Crist, MD
principal investigator · University of Missouri-Columbia

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Oct 2016. You cannot join it, but the record below documents what was studied.

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