Spinal DeformityNCT03839914
Evaluating the Efficacy and Safety of Intra-wound Vancomycin Powder in High Risk Patients
A study testing Vancomycin powder in people with Spinal Deformity and Trauma, run by The University of Hong Kong at 1 site in Hong Kong.
Trial summary
Surgical site infections (SSI) are not uncommon, especially in specific high-risk groups including spinal deformity and tumor (i.e. metastatic spine surgery) surgery. Well-recognized measures have been adopted to reduce surgical site infection, and the use of topical vancomycin powder has gained popularity in recent… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Spinal Deformity, Trauma, Spinal Tumor
- What is being tested?
- Vancomycin powder
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 76 participants
- Where
- 1 siteHong Kong
- Study dates
- 1 Aug 2020to 30 Jun 2027
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
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 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Female or male adult with age ≥18 years
- Undergoing open posterior spinal surgery with instrumentation indicated for spinal deformity, trauma and tumor
- Able to understand the nature, scope and possible consequences of participation in the study
- Appropriate voluntary written informed consent have been provided by patients
Who cannot join
- Has been treated with antibiotics due to primary spinal infection (i.e. spondylodiscitis) within 1 year prior to surgery
- Ongoing treatment with antibiotics for other infections
- Undergoing minimally invasive surgery or anterior-only surgical approaches or deformity correction surgery for adolescent idiopathic scoliosis (inherent low-risk for surgical site infections18)
- Undergoing decompression-only surgery for cervical spine, spinal deformity, trauma and tumors
- Has known history of allergy to vancomycin, penicillin and other glycopeptides (teicoplanin)
- Has history of vancomycin resistance
- Pregnancy
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Randomized, Controlled, Single-blinded Trial to Evaluate the Efficacy and Safety of Intra-wound Administration of Vancomycin Powder as Add-on Prophylactic Intraoperative Antibiotic in Patients at High Risk for Surgical Site Infections After Receiving Open Posterior Spinal Surgery
Surgical site infections (SSI) are not uncommon, especially in specific high-risk groups including spinal deformity and tumor (i.e. metastatic spine surgery) surgery. Well-recognized measures have been adopted to reduce surgical site infection, and the use of topical vancomycin powder has gained popularity in recent years. Given the lack of high-quality evidence for the use of topical vancomycin to reduce surgical site infections in open posterior spine surgery, which is currently the most common approach to spine surgery, it is crucial to study the use of vancomycin powder in reducing surgical site infections. This study is a prospective, single-blinded open label randomized controlled trial, with one arm of patients having local administration of 1g vancomycin powder which will be placed in the deep wound and subcutaneous layer prior to closure of surgical site by the orthopaedic surgeon, whereas the control arm will be without such application of vancomycin. Both arms of patients will still be undergoing the same operation procedures, as well as postoperative local wound drainage and wound care. This study will provide insights on the reduction rate in superficial and/or deep surgical site infection, and also assess the cost-effectiveness of using topical vancomycin in reducing surgical site infection between different disease groups, as well as any postoperative serum vancomycin toxicity and renal impairment. These proposed findings will provide valuable information for clinicians and institutions on future measures for surgical site infection of open posterior spine surgery.
Read the detailed description
Objectives:
Primary Objectives:
To evaluate the efficacy of intra-wound administration of vancomycin powder as add-on prophylactic intraoperative antibiotic in patients at high risk for surgical site infections after receiving open posterior spinal surgery
Secondary Objectives:
- To evaluate the safety of intra-wound administration of vancomycin powder as an add-on prophylactic intraoperative antibiotic
- To evaluate the cost-effectiveness of intra-wound administration of vancomycin powder as an add-on prophylactic intraoperative antibiotic compared to standard prophylactic intraoperative care
Hypothesis to be tested:
The intra-wound vancomycin powder as add-on prophylactic intraoperative antibiotic can significantly reduce the rate of surgical site infection.
Design and subjects:
The study is a prospective, parallel group, single-blinded randomized controlled trial.
All eligible patients who have consented to take part in the study will be randomized to either intervention or control group with a 1:1 allocation ratio. Patients allocated to the intervention group will receive intra-wound vancomycin powder 1gram as add-on prophylactic intraoperative antibiotic during the surgery. Patients allocated to the control group will not receive any add-on prophylactic intraoperative antibiotic. Patients will not know their treatment allocation until study termination.
Surgical site condition of all the patients will be assessed after the surgery. Investigator will examine the surgical wound and observe any signs and/or symptoms of SSI during hospitalization and follow-up visits until 1 year post-operation. For patients received instrumentation and fusion operation, additional radiographs of the operated sites will be performed for assessing any implant loosening and non-union at 3, 6 and 12 months postoperatively. All clinical and radiological outcomes will be evaluated throughout the study period.
Instruments: Parameters include age, gender, smoking and drinking history, pathology (deformity, tumor, trauma, degenerative), location and spinal levels of surgery, if instrumentation is used, operative time, blood loss, need for transfusion, significant co-morbidities including diabetes mellitus, renal failure, immunocompromised state, and dural tear events.
Interventions: Patients are randomized into the treatment group where 1g of vancomycin powder is administered to the deep and superficial spinal wound, and the control group without vancomycin powder use.
Main outcome measures: Primary outcome is the rate of surgical site infection. Secondary outcomes include vancomycin toxicity measured by vancomycin levels and renal function for three consecutive postoperative days, and cost-effectiveness calculation for each disease group. Additionally for those undergoing fusion surgery, 1-year follow-up assessment for fusion rates.
Data analysis:
For descriptive statistics, means and standard deviations or medians and interquartile ranges will be presented for continuous variables, frequencies and percentages will be presented for categorical/ discrete variables.
Baseline Comparison The baseline characteristics of the intervention and control group will be evaluated. The Student's t-test or Wilcoxon Rank-Sum test (according to the frequency distribution of the variables studied) will be used to compare continuous variables, and Chi-square or Fisher's exact test will be used to compare categorical/discrete variables.
Primary Efficacy Analysis Fisher's exact test will be performed to evaluate the difference of SSI rates between the intervention and control group. The respective 95% confidence interval (CI) will be calculated and presented. If it is appropriate, the adjustment for baseline covariates will be made to the primary efficacy comparison. The analysis will primarily be carried out according to ITT population and subordinately based on PP population. Both ITT and PP results will be reported.
Adjusted Analysis for Confounding Factors:
If baseline imbalance is observed, adjustment for confounding factors in the primary analysis will be investigated by a multiple logistic regression for the potential risk factors with SSI as follows:
- Patient-related risk factors include socio-demographics and co-morbidities including, diabetes mellitus, ischemic heart disease, chronic obstructive pulmonary disease, renal impairment/failure, immunocompromised state and nutritional deficiency.
- Procedure-related risk factors include type and site of surgery, intraoperative details including number of spinal level operated, length of instrumentation, use of fusion, use of drain, operation duration, presence of dural tear and number of surgeons in operating room
- Intra- and post-operative blood loss and blood product transfusion.
Cost-effectiveness analysis The cost-effectiveness analysis will estimate the Incremental cost-effectiveness ratio(ICER), which is the incremental cost per SSI prevented for the add-on administration of vancomycin powder compared with standard care over a 1-year post-operative period.
The total cost for SSI will be calculated by multiplying the quantity of resource use by unit costs. Future costs will be discounted at a rate of 3% per year.
Non-parametric bootstrapping will be used to determine the 95% CIs for ICERs. A non-parametric bootstrap replications of 1000 with replacement generating multiple data sets from the original data will be used. In each dataset, the statistic of interest (mean costs, SSIs, and ICERs) will be calculated. Multiple sensitivity analysis will be performed to evaluate the robustness of the findings.
Uncertainty in the estimates of the cost-effectiveness evaluation will be visualized by plotting the cost-effectiveness plane and acceptability curves. The acceptability curves will be used to determine the probability that the additional use of vancomycin powder will be cost-effective compared with standard care, at different values of ceiling ratio or acceptable willingness-to-pay threshold.
The cost-effectiveness analysis will be carried out according to the ITT population.
Safety Analysis The incidence of adverse effects (AEs) will be summarized by system organ class and severity grading according to the National Cancer Institute (NCI) Common Toxicity Criteria for Adverse Event (CTCAE) version 5. AEs will be tabulated by severity grading and relationship with study intervention.
The AESIs will be summarized in similar manner as all AEs. The safety analysis will be carried out according to in the safety population.
Expected results: Intra-wound administration of vancomycin powder reduces surgical site infections, is not toxic, and the most cost-effective disease groups are deformity correction and tumor surgery.
- Conditions
- Spinal Deformity, Trauma, Spinal Tumor, Surgical Site Infection
- Being tested
- Vancomycin powder
- Keywords
- vancomycin powder, surgical site infection, open posterior spinal surgery
- Medical subject headings
- Wounds and Injuries, Spinal Cord Neoplasms, Surgical Wound Infection
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Vancomycin powderDrug
For the intervention group, the use of 1g vancomycin powder to be placed in the deep wound and subcutaneous layer prior to closure.
| Study group | Role | What they receive |
|---|---|---|
| Intervention - Vancomycin | Active comparator | Intervention: 1g vancomycin powder locally applied to the deep wound and subcutaneous layer prior to closure. Receives: Drug: Vancomycin powder |
| Control - No vancomycin application | No intervention | No intervention, control group All other wound closure procedure and wound care and monitoring are the same |
What is being measured
The primary outcome is the main question the study is designed to answer.
Incidence of superficial incisional SSI
CDC Surgical Site Infection Criteria (Centers for Disease Control, Procedure-associated Module SSI, January 2019)
The definition of SSSI is:
- an infection occurs within 30 days after operation (where day 1= operation day); AND
- Involves only skin/subcutaneous tissue of the incision;
AND
- Patient has at least one of the following: a)purulent drainage from the superficial incision; b)organism(s) identified from an aseptically-obtained specimen from the superficial incision or subcutaneous tissue by a culture/non-culture based microbiologic testing method; c)superficial incision being deliberately opened by a surgeon, attending doctor/other designee and culture/non-culture based testing of the superficial incision or subcutaneous tissue is not performed AND Patient has at least one of the following: localized pain/tenderness, localized swelling, erythema, or heat; d) SSSI diagnosed by a surgeon, attending doctor/other designee.
Measured: one year
Incidence of deep incisional SSI
Deep Incisional SSI (DSSI)
- For deep incisional SSI, the definition is an infection occurring within 90 days after the operation (where day 1 = the procedure day); AND
- Involves deep soft tissues of the incision (e.g. fascial and muscle layers); AND
- Patient has at least one of the following:
- purulent drainage from the deep incision;
- a deep incision spontaneously dehisces, or is deliberately opened or aspirated by the surgeon, attending doctor or other designee; AND Organism(s) identified from the deep soft tissues of the incision by a culture or non-culture based microbiologic testing method which is performed for purposes of clinical diagnosis or treatment; AND Patient has at least one of the following signs and symptoms: fever (>38 °C); localized pain or tenderness;
- An abscess or other evidence of infection involving the deep incision that is detected on gross anatomical or histopathologic exam, or imaging test.
Measured: one year
Number of participants with adverse event (AE) to vancomycin
An AE is any untoward medical occurrence to a patient which does not necessarily has a causal relationship with the study intervention, and it can also occur outside of the time period. An AE can therefore be any unfavourable and unintended sign (including an abnormal laboratory finding), new or exacerbated symptoms/diseases temporally associated with the study intervention, whether or not the event is considered causally related to the use of intervention. Medical conditions/diseases present before the study intervention are only considered as AEs if they worsen after intervention. Signs and symptoms that are clearly due to natural process of underlying disease/disease progression should not be reported. SSSI/DSSI is not regarded as an AE in the study. Secondary infection of a SSSI/DSSI or other infection shall be regarded as an AE.
The term AE is used to include both serious and non-serious AE.
Measured: one year
Secondary outcomes (4)
Cost-effectiveness of vancomycin use
Determination of which disease group is most cost-effective in terms of cost per surgical site infection episode reduced. Will identify the highest risk group (i.e. deformity or tumor surgery) and see whether the risk of infection is significantly different between intervention and control groups as compared to perceived less risk groups (i.e. simple decompression surgery, no implants). Cost items include cost of vancomycin drug, hospitalization days, prolonged antibiotic use, repeated operations for debridement
Measured: one year
Incremental cost-effectiveness ratio
It is the incremental cost divided by the difference in the number of SSI cases between treatment group and control group over a 1-year post-operative period.
Measured: one year
Serum vancomycin level
3 days postoperative serum assessment of vancomycin levels to identify any vancomycin toxicity in serum
Measured: Three days postoperatively
Renal function test
3 days postoperative serum assessment of renal function tests to identify any renal impairment
Measured: Three days postoperatively
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted15 Feb 2019
- Study start1 Aug 2020
- Primary completion31 Mar 2027 (estimated)
- Study completion30 Jun 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Spinal DeformityStudies of the same condition, open and under way.
- More trials run by The University of Hong KongThe 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 N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- Single-blinded open-label randomized controlled trial
- Masking
- Double blind
- Who is masked
- Investigator, Outcomes assessor
- Enrolment
- 76 participants (estimated)
Sponsor and investigators
- Lead sponsor
- The University of Hong Kong
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Dr. Jason Pui Yin Cheung, The University of Hong Kong
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03839914
- Sponsor's protocol ID
- Study protocol 1.4
- Status last verified
- Apr 2026
- First submitted
- 9 Feb 2019
- Last updated
- 29 Apr 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 29 Apr 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Randomized, Controlled, Single-blinded Trial to Evaluate the Efficacy and Safety of Intra-wound Administration of Vancomycin Powder as Add-on Prophylactic Intraoperative Antibiotic in Patients at High Risk for Surgical Site Infections After Receiving Open Posterior Spinal Surgery
- ClinicalTrials.gov ID
- NCT03839914
- Acronym / sponsor ID
- Study protocol 1.4
- Conditions
- Spinal Deformity, Trauma, Spinal Tumor, Surgical Site Infection
- Keywords
- vancomycin powder, surgical site infection, open posterior spinal surgery
- Study type
- Interventional
- Recruitment status
- Active, not recruiting
- Enrolment
- 76 participants (estimated)
- Lead sponsor
- The University of Hong KongUniversity, hospital or other
- Study start
- 1 Aug 2020 (actual)
- Primary completion
- 31 Mar 2027 (estimated)
- Study completion
- 30 Jun 2027 (estimated)
- First posted
- 15 Feb 2019 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Surgical site infections (SSI) are not uncommon, especially in specific high-risk groups including spinal deformity and tumor (i.e. metastatic spine surgery) surgery. Well-recognized measures have been adopted to reduce surgical site infection, and the use of topical vancomycin powder has gained popularity in recent years. Given the lack of high-quality evidence for the use of topical vancomycin to reduce surgical site infections in open posterior spine surgery, which is currently the most common approach to spine surgery, it is crucial to study the use of vancomycin powder in reducing surgical site infections. This study is a prospective, single-blinded open label randomized controlled trial, with one arm of patients having local administration of 1g vancomycin powder which will be placed in the deep wound and subcutaneous layer prior to closure of surgical site by the orthopaedic surgeon, whereas the control arm will be without such application of vancomycin. Both arms of patients will still be undergoing the same operation procedures, as well as postoperative local wound drainage and wound care. This study will provide insights on the reduction rate in superficial and/or deep surgical site infection, and also assess the cost-effectiveness of using topical vancomycin in reducing surgical site infection between different disease groups, as well as any postoperative serum vancomycin toxicity and renal impairment. These proposed findings will provide valuable information for clinicians and institutions on future measures for surgical site infection of open posterior spine surgery.
Detailed description
Objectives:
Primary Objectives:
To evaluate the efficacy of intra-wound administration of vancomycin powder as add-on prophylactic intraoperative antibiotic in patients at high risk for surgical site infections after receiving open posterior spinal surgery
Secondary Objectives:
- To evaluate the safety of intra-wound administration of vancomycin powder as an add-on prophylactic intraoperative antibiotic
- To evaluate the cost-effectiveness of intra-wound administration of vancomycin powder as an add-on prophylactic intraoperative antibiotic compared to standard prophylactic intraoperative care
Hypothesis to be tested:
The intra-wound vancomycin powder as add-on prophylactic intraoperative antibiotic can significantly reduce the rate of surgical site infection.
Design and subjects:
The study is a prospective, parallel group, single-blinded randomized controlled trial.
All eligible patients who have consented to take part in the study will be randomized to either intervention or control group with a 1:1 allocation ratio. Patients allocated to the intervention group will receive intra-wound vancomycin powder 1gram as add-on prophylactic intraoperative antibiotic during the surgery. Patients allocated to the control group will not receive any add-on prophylactic intraoperative antibiotic. Patients will not know their treatment allocation until study termination.
Surgical site condition of all the patients will be assessed after the surgery. Investigator will examine the surgical wound and observe any signs and/or symptoms of SSI during hospitalization and follow-up visits until 1 year post-operation. For patients received instrumentation and fusion operation, additional radiographs of the operated sites will be performed for assessing any implant loosening and non-union at 3, 6 and 12 months postoperatively. All clinical and radiological outcomes will be evaluated throughout the study period.
Instruments: Parameters include age, gender, smoking and drinking history, pathology (deformity, tumor, trauma, degenerative), location and spinal levels of surgery, if instrumentation is used, operative time, blood loss, need for transfusion, significant co-morbidities including diabetes mellitus, renal failure, immunocompromised state, and dural tear events.
Interventions: Patients are randomized into the treatment group where 1g of vancomycin powder is administered to the deep and superficial spinal wound, and the control group without vancomycin powder use.
Main outcome measures: Primary outcome is the rate of surgical site infection. Secondary outcomes include vancomycin toxicity measured by vancomycin levels and renal function for three consecutive postoperative days, and cost-effectiveness calculation for each disease group. Additionally for those undergoing fusion surgery, 1-year follow-up assessment for fusion rates.
Data analysis:
For descriptive statistics, means and standard deviations or medians and interquartile ranges will be presented for continuous variables, frequencies and percentages will be presented for categorical/ discrete variables.
Baseline Comparison The baseline characteristics of the intervention and control group will be evaluated. The Student's t-test or Wilcoxon Rank-Sum test (according to the frequency distribution of the variables studied) will be used to compare continuous variables, and Chi-square or Fisher's exact test will be used to compare categorical/discrete variables.
Primary Efficacy Analysis Fisher's exact test will be performed to evaluate the difference of SSI rates between the intervention and control group. The respective 95% confidence interval (CI) will be calculated and presented. If it is appropriate, the adjustment for baseline covariates will be made to the primary efficacy comparison. The analysis will primarily be carried out according to ITT population and subordinately based on PP population. Both ITT and PP results will be reported.
Adjusted Analysis for Confounding Factors:
If baseline imbalance is observed, adjustment for confounding factors in the primary analysis will be investigated by a multiple logistic regression for the potential risk factors with SSI as follows:
- Patient-related risk factors include socio-demographics and co-morbidities including, diabetes mellitus, ischemic heart disease, chronic obstructive pulmonary disease, renal impairment/failure, immunocompromised state and nutritional deficiency.
- Procedure-related risk factors include type and site of surgery, intraoperative details including number of spinal level operated, length of instrumentation, use of fusion, use of drain, operation duration, presence of dural tear and number of surgeons in operating room
- Intra- and post-operative blood loss and blood product transfusion.
Cost-effectiveness analysis The cost-effectiveness analysis will estimate the Incremental cost-effectiveness ratio(ICER), which is the incremental cost per SSI prevented for the add-on administration of vancomycin powder compared with standard care over a 1-year post-operative period.
The total cost for SSI will be calculated by multiplying the quantity of resource use by unit costs. Future costs will be discounted at a rate of 3% per year.
Non-parametric bootstrapping will be used to determine the 95% CIs for ICERs. A non-parametric bootstrap replications of 1000 with replacement generating multiple data sets from the original data will be used. In each dataset, the statistic of interest (mean costs, SSIs, and ICERs) will be calculated. Multiple sensitivity analysis will be performed to evaluate the robustness of the findings.
Uncertainty in the estimates of the cost-effectiveness evaluation will be visualized by plotting the cost-effectiveness plane and acceptability curves. The acceptability curves will be used to determine the probability that the additional use of vancomycin powder will be cost-effective compared with standard care, at different values of ceiling ratio or acceptable willingness-to-pay threshold.
The cost-effectiveness analysis will be carried out according to the ITT population.
Safety Analysis The incidence of adverse effects (AEs) will be summarized by system organ class and severity grading according to the National Cancer Institute (NCI) Common Toxicity Criteria for Adverse Event (CTCAE) version 5. AEs will be tabulated by severity grading and relationship with study intervention.
The AESIs will be summarized in similar manner as all AEs. The safety analysis will be carried out according to in the safety population.
Expected results: Intra-wound administration of vancomycin powder reduces surgical site infections, is not toxic, and the most cost-effective disease groups are deformity correction and tumor surgery.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (investigator, outcomes assessor)
- Number of arms
- 2
- Model description
- Single-blinded open-label randomized controlled trial
| Arm | Type | Receives |
|---|---|---|
| Intervention - Vancomycin | Active comparator | Drug: Vancomycin powderIntervention: 1g vancomycin powder locally applied to the deep wound and subcutaneous layer prior to closure. |
| Control - No vancomycin application | No intervention | –No intervention, control group All other wound closure procedure and wound care and monitoring are the same |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (4 listed)
- Female or male adult with age ≥18 years
- Undergoing open posterior spinal surgery with instrumentation indicated for spinal deformity, trauma and tumor
- Able to understand the nature, scope and possible consequences of participation in the study
- Appropriate voluntary written informed consent have been provided by patients
Key exclusion criteria (7 listed)
- Has been treated with antibiotics due to primary spinal infection (i.e. spondylodiscitis) within 1 year prior to surgery
- Ongoing treatment with antibiotics for other infections
- Undergoing minimally invasive surgery or anterior-only surgical approaches or deformity correction surgery for adolescent idiopathic scoliosis (inherent low-risk for surgical site infections18)
- Undergoing decompression-only surgery for cervical spine, spinal deformity, trauma and tumors
- Has known history of allergy to vancomycin, penicillin and other glycopeptides (teicoplanin)
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 |
|---|---|---|
| Vancomycin powderFor the intervention group, the use of 1g vancomycin powder to be placed in the deep wound and subcutaneous layer prior to closure. | Drug | Intervention - Vancomycin |
Primary outcome
Incidence of superficial incisional SSI
Time frame: one year
CDC Surgical Site Infection Criteria (Centers for Disease Control, Procedure-associated Module SSI, January 2019) The definition of SSSI is: 1. an infection occurs within 30 days after operation (where day 1= operation day); AND 2. Involves only skin/subcutaneous tissue of the incision; AND 3) Patient has at least one of the following: a)purulent drainage from the superficial incision; b)organism(s) identified from an aseptically-obtained specimen from the superficial incision or subcutaneous tissue by a culture/non-culture based microbiologic testing method; c)superficial incision being deliberately opened by a surgeon, attending doctor/other designee and culture/non-culture based testing of the superficial incision or subcutaneous tissue is not performed AND Patient has at least one of the following: localized pain/tenderness, localized swelling, erythema, or heat; d) SSSI diagnosed by a surgeon, attending doctor/other designee.
Incidence of deep incisional SSI
Time frame: one year
Deep Incisional SSI (DSSI) 1. For deep incisional SSI, the definition is an infection occurring within 90 days after the operation (where day 1 = the procedure day); AND 2. Involves deep soft tissues of the incision (e.g. fascial and muscle layers); AND 3. Patient has at least one of the following: 1. purulent drainage from the deep incision; 2. a deep incision spontaneously dehisces, or is deliberately opened or aspirated by the surgeon, attending doctor or other designee; AND Organism(s) identified from the deep soft tissues of the incision by a culture or non-culture based microbiologic testing method which is performed for purposes of clinical diagnosis or treatment; AND Patient has at least one of the following signs and symptoms: fever (>38 °C); localized pain or tenderness; 3. An abscess or other evidence of infection involving the deep incision that is detected on gross anatomical or histopathologic exam, or imaging test.
Number of participants with adverse event (AE) to vancomycin
Time frame: one year
An AE is any untoward medical occurrence to a patient which does not necessarily has a causal relationship with the study intervention, and it can also occur outside of the time period. An AE can therefore be any unfavourable and unintended sign (including an abnormal laboratory finding), new or exacerbated symptoms/diseases temporally associated with the study intervention, whether or not the event is considered causally related to the use of intervention. Medical conditions/diseases present before the study intervention are only considered as AEs if they worsen after intervention. Signs and symptoms that are clearly due to natural process of underlying disease/disease progression should not be reported. SSSI/DSSI is not regarded as an AE in the study. Secondary infection of a SSSI/DSSI or other infection shall be regarded as an AE. The term AE is used to include both serious and non-serious AE.
4 secondary outcomes
Cost-effectiveness of vancomycin use
Time frame: one year
Incremental cost-effectiveness ratio
Time frame: one year
Serum vancomycin level
Time frame: Three days postoperatively
Renal function test
Time frame: Three days postoperatively
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 29 Apr 2026.
- Individual participant dataSharing planned: No
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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.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Vancomycin powder in people with Spinal Deformity and Trauma, run by The University of Hong Kong at 1 site in Hong Kong.
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 4 inclusion and 7 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: under way, not looking for participants, as of the sponsor's last update on 29 Apr 2026. 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 Hong Kong. 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.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
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?
Incidence of superficial incisional SSI (time frame: one year). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 Apr 2026.