ArthritisPhase 4NCT01027286
Prospective Evaluation of Vitagel for Reduction in Blood Loss and Pain Following Unilateral Total Knee Arthroplasty
A Phase 4 study testing Vitagel in people with Arthritis, run by The Cleveland Clinic at 1 site in United States.
Trial summary
Vitagel® is an FDA approved class III medical device. It is a surgical hemostat, which has been shown to control bleeding during orthopaedic, cardiac, hepatic, and general surgical procedures. Read more about this study
- Who is it for?
- Ages 18 to 85 years
- Conditions the study is for
- Arthritis
- What is being tested?
- Vitagel
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 108 participants
- Where
- 1 siteUnited States
- Study dates
- Jul 2009to Jun 2010
- Phase
- Phase 4
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 85 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Age: 18 - 85 years
- Sex: Both male and female will be included. The male-to-female ratio will depend upon the patient population.
- Stable Health: At the time of surgery based on physical examination and medical history.
- Patient exhibited preoperative radiographic evidence of joint degeneration consistent with TKA that could not have been treated in non-operative fashion.
- Patient had severe knee pain and disability due to degenerative joint disease.
- Patient or patient's legal representative has signed the Informed Consent form. The patient is capable of making informed decisions regarding his/her healthcare.
Who cannot join
- Patients with history of liver disease. Patients with liver dysfunction from cirrhosis or hepatitis may have impaired production of factors in the clotting cascade which may make these individuals more prone to bleed, especially with the use of anticoagulants. For this reason, these patients will also be excluded from this study if a baseline INR if greater than 1.3.
- Patients allergic to materials of bovine origin.
- Patients predonating autologous blood.
- Patients with a preoperative platelet count of less than 100,000.
- Patients undergoing bilateral or revision surgery.
- Evidence of bleeding or metabolic - based hemolytic disorder (hemophilia or anticoagulation use), or hypercoaguable disorder.
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- Previous history of infection in the affected joint.
- Peripheral vascular disease.
- Patient was a poor compliance risk - treated for ethanol or drug abuse, physical or mental handicap, etc.
- Patients with a previous history of venous thromboembolism, or other reason for requiring anticoagulation other than ASA 325 mg po BID and mechanical compression.
Trial locations and contacts
1 site in 1 country.
About this study
Vitagel® is an FDA approved class III medical device. It is a surgical hemostat, which has been shown to control bleeding during orthopaedic, cardiac, hepatic, and general surgical procedures. The product is a thrombin/collagen suspension which works in combination with the patient's own plasma to form a fibrin/collagen clot.
The present prospective, randomized controlled trial is designed to evaluate the efficacy of Vitagel® for reducing blood loss and pain in patients managed with unilateral total knee arthroplasty (TKA). It is hypothesized that the use of Vitagel® may lead to less blood filled knees, and thus to a greater improvement in postoperative pain scores when compared to the control group. The two arms of the study will include:
Read more
- experimental group in which Vitagel® is used unilateral TKA
- control group representing our current standard of care (no Vitagel®)
A comparison of the functional and clinical results between these two groups will be conducted using several outcome measures including the KOOS, SF-12 version2 and pain scores through the previously IRB approved OrthoMidas registry. The primary variable of interest is blood loss, based on hemoglobin drop during the postoperative hospital stay. Of secondary interest will be; 1) pain levels in the PACU, 2) pain scores for all postoperative days, 3) average pain for the entire hospital stay, 4) length of stay, 5) patient satisfaction at discharge, 4 weeks postoperative, and 12 weeks postoperative, and 6) functional scores at 4 and 12 weeks postoperative.
Read the detailed description
This is a prospective, single-center, randomized, double-blinded, clinical trial involving three orthopaedic surgeons who perform total knee replacement. The proposed study is optimal for obtaining clinical and functional comparisons between TKA surgical procedures utilizing conventional practices (control) and TKA utilizing Vitagel®, a surgical hemostat used to control bleeding and facilitate healing. The study will include patients that are receiving a unilateral primary TKA.
Fifty cases will be assigned to each arm of the study (total 100 cases). This sample size was estimated using an alpha of 0.05 (conventional for all studies) and a beta of 0.80 (recommended for superiority studies). The standard deviation is based on a study conducted by the PI at the Cleveland Clinic in an IRB approved retrospective project in 2007, and will provide in excess of 80 percent statistical power in detecting less than a 100 ml difference in blood loss between the two groups.
The study will be conducted at the Cleveland Clinic (Cleveland, OH). The patients will not be informed of their treatment assignment, and the research investigator making observations and recording the data postoperatively will also be blinded to their treatment assignment. The placement of patients into treatment arms will be based on random drawing of sealed envelopes. An assessment of blinding will be conducted at the conclusion of the study by asking patients what treatment they think that they received.
Data will be collected at four timepoints, including preoperatively, during the hospital stay, 4 weeks postoperatively, and 12 weeks postoperatively. Preoperative data collected will include baseline SF-12, KOOS, hemoglobin and hematocrit levels, and pain scores. Data collected in the hospital will include hemoglobin and hematocrit levels, pain scores, narcotics usage, length of stay, and patient satisfaction at discharge. The SF-12, KOOS, pain scores, and patient satisfaction will be collected utilizing the 4 week (±2 weeks) standard of care postoperative visit. Patients are not always seen at the 12 week (±4 weeks) postoperative timepoint as standard of care. To collect these data, patients will be mailed the SF-12, KOOS, pain scores, patient satisfaction, and blinding assessment questionnaires. Patients not responding to the initial mailer will be contacted by phone and sent a second packet of questionnaires.
- Conditions
- Arthritis
- Being tested
- Vitagel
- Medical subject headings
- Arthritis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
VitagelDevice
Vitagel applied just prior to closure during primary total knee arthroplasty
| Study group | Role | What they receive |
|---|---|---|
| Vitagel | Experimental | Not described Receives: Device: Vitagel |
| Control | No intervention | No Vitagel used. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Number of Patients Managed With Blood Transfusion
Measured: daily during hospital stay (an expected average of 4 days)
Secondary outcomes (6)
Total Calculated Hospital Blood Loss
Measured: daily during hospital stay (an expected average of 4 days)
Preoperative & Postoperative Hemoglobin Values
Measured: within 30 days before surgery (preop), daily during hospital stay (an expected average of 4 days)
Daily Narcotic Usage (Morphine-equivalent mg)
Measured: daily during hospital stay (an expected average of 4 days)
Length of Stay
Measured: day of hospital discharge
Pain Score Scale
A single scoring system used to evaluate overall pain on a scale of integers 0 to 10, with 0 representing "no pain" and 10 representing "unbearable pain." Thus, in this context, lower values represent better outcomes.
Measured: within 30 days before surgery (preop), 4 weeks after surgery, 12 weeks after surgery
Knee Injury and Osteoarthritis Outcome Score (KOOS)
A scoring system used to evaluate the patient's opinion about his/her knee and associated problems. Subscales include 1) pain, 2) other symptoms, 3) function in daily living (ADL), 4) function in sport and recreation (Sport/Rec), and 5) knee related quality of life (QOL). Standardized answer options are given (5 Likert boxes) and each question is assigned a score from 0 to 4. A normalized score between 0 to 100 is calculated for each subscale. Subscale scores are generally not combined; rather, they are reported separated. Higher values represent better outcomes (i.e., less extreme symptoms).
Measured: within 30 days before surgery (preop), 4 weeks after surgery, 12 weeks after surgery
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted7 Dec 2009 (estimated)
- Study startJul 2009
- Primary completionApr 2010
- Study completionJun 2010
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for ArthritisStudies of the same condition, open and under way.
- More trials run by The Cleveland ClinicThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 4
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
- Who is masked
- Participant, Outcomes assessor
- Enrolment
- 108 participants (actual)
Sponsor and investigators
- Lead sponsor
- The Cleveland Clinic
- Sponsor type
- University, hospital or other
- Collaborators
- Orthovita d/b/a Stryker
- Responsible party
- Sponsor
- Investigators
- Wael K Barsoum, MD, Principal investigator, The Cleveland Clinic
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01027286
- Sponsor's protocol ID
- 09-548
- Status last verified
- Oct 2012
- First submitted
- 3 Dec 2009
- Last updated
- 29 Nov 2012
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
Publications
Bloomfield MR, Klika AK, Molloy RM, Froimson MI, Krebs VE, Barsoum WK. Prospective randomized evaluation of a collagen/thrombin and autologous platelet hemostatic agent during total knee arthroplasty. J Arthroplasty. 2012 May;27(5):695-702. doi: 10.1016/j.arth.2011.09.014. Epub 2011 Oct 27.
PubMed 22035976
Study at a glance
From the registry record, last updated by the sponsor on 29 Nov 2012. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Prospective Evaluation of Vitagel for Reduction in Blood Loss and Pain Following Unilateral Total Knee Arthroplasty
- ClinicalTrials.gov ID
- NCT01027286
- Acronym / sponsor ID
- 09-548
- Conditions
- Arthritis
- Phase
- Phase 4
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 108 participants (actual)
- Lead sponsor
- The Cleveland ClinicUniversity, hospital or other
- Collaborators
- Orthovita d/b/a Stryker
- Study start
- Jul 2009
- Primary completion
- Apr 2010 (actual)
- Study completion
- Jun 2010 (actual)
- First posted
- 7 Dec 2009 (estimated)
- Results
- Posted 29 Nov 2012
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Vitagel® is an FDA approved class III medical device. It is a surgical hemostat, which has been shown to control bleeding during orthopaedic, cardiac, hepatic, and general surgical procedures. The product is a thrombin/collagen suspension which works in combination with the patient's own plasma to form a fibrin/collagen clot.
The present prospective, randomized controlled trial is designed to evaluate the efficacy of Vitagel® for reducing blood loss and pain in patients managed with unilateral total knee arthroplasty (TKA). It is hypothesized that the use of Vitagel® may lead to less blood filled knees, and thus to a greater improvement in postoperative pain scores when compared to the control group. The two arms of the study will include:
- experimental group in which Vitagel® is used unilateral TKA
- control group representing our current standard of care (no Vitagel®)
A comparison of the functional and clinical results between these two groups will be conducted using several outcome measures including the KOOS, SF-12 version2 and pain scores through the previously IRB approved OrthoMidas registry. The primary variable of interest is blood loss, based on hemoglobin drop during the postoperative hospital stay. Of secondary interest will be; 1) pain levels in the PACU, 2) pain scores for all postoperative days, 3) average pain for the entire hospital stay, 4) length of stay, 5) patient satisfaction at discharge, 4 weeks postoperative, and 12 weeks postoperative, and 6) functional scores at 4 and 12 weeks postoperative.
Detailed description
This is a prospective, single-center, randomized, double-blinded, clinical trial involving three orthopaedic surgeons who perform total knee replacement. The proposed study is optimal for obtaining clinical and functional comparisons between TKA surgical procedures utilizing conventional practices (control) and TKA utilizing Vitagel®, a surgical hemostat used to control bleeding and facilitate healing. The study will include patients that are receiving a unilateral primary TKA.
Fifty cases will be assigned to each arm of the study (total 100 cases). This sample size was estimated using an alpha of 0.05 (conventional for all studies) and a beta of 0.80 (recommended for superiority studies). The standard deviation is based on a study conducted by the PI at the Cleveland Clinic in an IRB approved retrospective project in 2007, and will provide in excess of 80 percent statistical power in detecting less than a 100 ml difference in blood loss between the two groups.
The study will be conducted at the Cleveland Clinic (Cleveland, OH). The patients will not be informed of their treatment assignment, and the research investigator making observations and recording the data postoperatively will also be blinded to their treatment assignment. The placement of patients into treatment arms will be based on random drawing of sealed envelopes. An assessment of blinding will be conducted at the conclusion of the study by asking patients what treatment they think that they received.
Data will be collected at four timepoints, including preoperatively, during the hospital stay, 4 weeks postoperatively, and 12 weeks postoperatively. Preoperative data collected will include baseline SF-12, KOOS, hemoglobin and hematocrit levels, and pain scores. Data collected in the hospital will include hemoglobin and hematocrit levels, pain scores, narcotics usage, length of stay, and patient satisfaction at discharge. The SF-12, KOOS, pain scores, and patient satisfaction will be collected utilizing the 4 week (±2 weeks) standard of care postoperative visit. Patients are not always seen at the 12 week (±4 weeks) postoperative timepoint as standard of care. To collect these data, patients will be mailed the SF-12, KOOS, pain scores, patient satisfaction, and blinding assessment questionnaires. Patients not responding to the initial mailer will be contacted by phone and sent a second packet of questionnaires.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Vitagel | Experimental | Device: Vitagel |
| Control | No intervention | –No Vitagel used. |
Who may qualify
- Ages
- 18 to 85 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (6 listed)
- Age: 18 - 85 years
- Sex: Both male and female will be included. The male-to-female ratio will depend upon the patient population.
- Stable Health: At the time of surgery based on physical examination and medical history.
- Patient exhibited preoperative radiographic evidence of joint degeneration consistent with TKA that could not have been treated in non-operative fashion.
- Patient had severe knee pain and disability due to degenerative joint disease.
Key exclusion criteria (10 listed)
- Patients with history of liver disease. Patients with liver dysfunction from cirrhosis or hepatitis may have impaired production of factors in the clotting cascade which may make these individuals more prone to bleed, especially with the use of anticoagulants. For this reason, these patients will also be excluded from this study if a baseline INR if greater than 1.3.
- Patients allergic to materials of bovine origin.
- Patients predonating autologous blood.
- Patients with a preoperative platelet count of less than 100,000.
- Patients undergoing bilateral or revision surgery.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| VitagelVitagel applied just prior to closure during primary total knee arthroplasty | Device | Vitagel |
Primary outcome
Number of Patients Managed With Blood Transfusion
Time frame: daily during hospital stay (an expected average of 4 days)
6 secondary outcomes
Total Calculated Hospital Blood Loss
Time frame: daily during hospital stay (an expected average of 4 days)
Preoperative & Postoperative Hemoglobin Values
Time frame: within 30 days before surgery (preop), daily during hospital stay (an expected average of 4 days)
Daily Narcotic Usage (Morphine-equivalent mg)
Time frame: daily during hospital stay (an expected average of 4 days)
Length of Stay
Time frame: day of hospital discharge
Pain Score Scale
Time frame: within 30 days before surgery (preop), 4 weeks after surgery, 12 weeks after surgery
Knee Injury and Osteoarthritis Outcome Score (KOOS)
Time frame: within 30 days before surgery (preop), 4 weeks after surgery, 12 weeks after surgery
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 29 Nov 2012.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Results publication: PubMed 22035976Bloomfield MR, Klika AK, Molloy RM, Froimson MI, Krebs VE, Barsoum WK. Prospective randomized evaluation of a collagen/thrombin and autologous platelet hemostatic agent during total knee arthroplasty. J Arthroplasty. 2012 May;27(5):695-702. doi: 10.1016/j.arth.2011.09.014. Epub 2011 Oct 27.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Wael K Barsoum, MD principal investigator
The Cleveland Clinic
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 4 study testing Vitagel in people with Arthritis, run by The Cleveland Clinic at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 6 inclusion and 10 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 29 Nov 2012. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 29 Nov 2012). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Number of Patients Managed With Blood Transfusion (time frame: daily during hospital stay (an expected average of 4 days)). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT01027286, which also lists 1 linked publication.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 29 Nov 2012.