InflammationNCT00961623
Characterizing Knee Pain and Response to Surgery Using Local Biomarkers
An observational study of Inflammation, run by Stanford University at 1 site in United States.
Trial summary
The diagnosis and monitoring of clinically-significant pathologies of the knee remains challenging, and it is unknown why only some injuries become painful or respond to surgical intervention. The limitations of diagnostic magnetic resonance imaging result in arthroscopy that is not always beneficial. Read more about this study
- Who is it for?
- Ages 18 to 90 years
- Conditions the study is for
- Inflammation
- How many people
- 0 participants
- Where
- 1 siteUnited States
- Study dates
- Jul 2009to Dec 2011
- Phase
- Observational
- Are there results?
- None posted in the registry
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 90 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Our study population includes adult males and females presenting to a single orthopaedic surgeon for arthroscopic management of acute or chronic knee pain due to a mechanical derangement discernable by MRI. Subjects are selected using a probability sampling scheme, such that every knee arthroscopy patient that presents, without exclusionary criteria described above, is offered enrollment in the study. To date, approximately 85% of patients consent to enrollment, with no apparent sampling bias. Additionally, we are using repeated measures (matched random sampling) to evaluate the role of mediators of knee pain, and to assess the potential of utilizing expression profiles to monitor surgical outcome. For example, clinical indicators and biomarker expression profiles taken peri-operatively are compared to those obtained 12 weeks post-operatively in the same subject.
Who may be able to join
- •Adult patients with knee pain (acute or chronic) who had failed conservative treatment and elected for arthroscopic management. Indications for surgery included the presence of mechanical symptoms on history, a physical examination positive for McMurray's maneuver or joint line tenderness or both, absence of severe joint space narrowing on plain radiography, and the presence of grade III signal changes on MRI in an anatomic location consistent with the history and physical examination.
Who cannot join
- Less than 18 years old.
- Recent (within three months) intra-articular corticosteroid injection and past or current medical history of autoimmune disease (i.e. rheumatoid arthritis).
- In addition, no patients involved in a worker's compensation claim or personal injury litigation were enrolled in the study.
Trial locations and contacts
1 site in 1 country.
United States1 site
Stanford University School of Medicine
Stanford, California, 94305
About this study
The diagnosis and monitoring of clinically-significant pathologies of the knee remains challenging, and it is unknown why only some injuries become painful or respond to surgical intervention. The limitations of diagnostic magnetic resonance imaging result in arthroscopy that is not always beneficial. Elucidation of biochemical pathways underlying pain in this condition may aid patient selection for surgery and provide pharmacotherapeutic targets. Cytokines or a novel yet uncharacterized protein may be involved in pain following meniscus injury and diagnostic cytokine assay may help physicians differentiate patients that may benefit from arthroscopy from those that may not. Additionally, evaluating post-operative biochemical profiles may provide a method of monitoring surgical outcome and understanding post-operative continuation or remission of pain.
Read the detailed description
Lavage of the operative and contralateral knee for comparison are performed under anesthesia prior to arthroscopy by the infusion of 10cc sterile saline into the knee joint followed by the immediate withdrawal into the syringe, and storage at -80°C in a tube containing a protease inhibitor. At 12wk post-operative a 10cc lavage is performed on the knee that underwent surgery. Clinical findings for each sample are quantified using gold-standard symptom severity questionnaires.
The specimens will be analyzed for 31 potential biomarkers using a multiplexed immunoassay panel, the results of which will be compared with pre- and post-operative clinical findings and radiographic imaging. Plans do not currently include microarray analysis, but this may be later included.
- Conditions
- Inflammation
- Medical subject headings
- Inflammation
What is being measured
The primary outcome is the main question the study is designed to answer.
Surgical outcome: pain and functionality
Measured: 12-24wk post-operative.
Secondary outcomes (1)
Expression profiles of inflammatory mediators
Measured: 24wk
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted19 Aug 2009 (estimated)
- Study startJul 2009
- Primary completionDec 2011 (estimated)
- Study completionDec 2011 (estimated)
Why it stopped: funding
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for InflammationStudies of the same condition, open and under way.
- More trials run by Stanford UniversityThe 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
- Observational
- Observational model
- Case only
- Time perspective
- Prospective
- Enrolment
- 0 participants (actual)
Sponsor and investigators
- Lead sponsor
- Stanford University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Jason L. Dragoo, Stanford University
- Investigators
- Jason L Dragoo, MD, Principal investigator, Stanford UniversityEric Leroux, Study chair, Stanford UniversityAmy Wasterlain, Study chair, Stanford UniversityGaetano Scuderi, MD, Principal investigator, Stanford University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00961623
- Sponsor's protocol ID
- SU-07292009-3441
- Other IDs
- IRB 16305
- Status last verified
- May 2019
- First submitted
- 17 Aug 2009
- Last updated
- 4 Jun 2019
- Results posted
- No
- Data monitoring committee
- Yes
Study at a glance
From the registry record, last updated by the sponsor on 4 Jun 2019. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Characterizing Knee Pain and Response to Surgery Using Local Biomarkers
- ClinicalTrials.gov ID
- NCT00961623
- Acronym / sponsor ID
- SU-07292009-3441
- Conditions
- Inflammation
- Study type
- Observational
- Recruitment status
- WithdrawnReason stopped: funding
- Enrolment
- 0 participants (actual)
- Lead sponsor
- Stanford UniversityUniversity, hospital or other
- Study start
- Jul 2009
- Primary completion
- Dec 2011 (estimated)
- Study completion
- Dec 2011 (estimated)
- First posted
- 19 Aug 2009 (estimated)
- 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.
The diagnosis and monitoring of clinically-significant pathologies of the knee remains challenging, and it is unknown why only some injuries become painful or respond to surgical intervention. The limitations of diagnostic magnetic resonance imaging result in arthroscopy that is not always beneficial. Elucidation of biochemical pathways underlying pain in this condition may aid patient selection for surgery and provide pharmacotherapeutic targets. Cytokines or a novel yet uncharacterized protein may be involved in pain following meniscus injury and diagnostic cytokine assay may help physicians differentiate patients that may benefit from arthroscopy from those that may not. Additionally, evaluating post-operative biochemical profiles may provide a method of monitoring surgical outcome and understanding post-operative continuation or remission of pain.
Detailed description
Lavage of the operative and contralateral knee for comparison are performed under anesthesia prior to arthroscopy by the infusion of 10cc sterile saline into the knee joint followed by the immediate withdrawal into the syringe, and storage at -80°C in a tube containing a protease inhibitor. At 12wk post-operative a 10cc lavage is performed on the knee that underwent surgery. Clinical findings for each sample are quantified using gold-standard symptom severity questionnaires.
The specimens will be analyzed for 31 potential biomarkers using a multiplexed immunoassay panel, the results of which will be compared with pre- and post-operative clinical findings and radiographic imaging. Plans do not currently include microarray analysis, but this may be later included.
Study design
- Observational model
- Case only
- Time perspective
- Prospective
Who may qualify
- Ages
- 18 to 90 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Our study population includes adult males and females presenting to a single orthopaedic surgeon for arthroscopic management of acute or chronic knee pain due to a mechanical derangement discernable by MRI. Subjects are selected using a probability sampling scheme, such that every knee arthroscopy patient that presents, without exclusionary criteria described above, is offered enrollment in the study. To date, approximately 85% of patients consent to enrollment, with no apparent sampling bias. Additionally, we are using repeated measures (matched random sampling) to evaluate the role of mediators of knee pain, and to assess the potential of utilizing expression profiles to monitor surgical outcome. For example, clinical indicators and biomarker expression profiles taken peri-operatively are compared to those obtained 12 weeks post-operatively in the same subject.
Key inclusion criteria (1 listed)
- •Adult patients with knee pain (acute or chronic) who had failed conservative treatment and elected for arthroscopic management. Indications for surgery included the presence of mechanical symptoms on history, a physical examination positive for McMurray's maneuver or joint line tenderness or both, absence of severe joint space narrowing on plain radiography, and the presence of grade III signal changes on MRI in an anatomic location consistent with the history and physical examination.
Key exclusion criteria (3 listed)
- Less than 18 years old.
- Recent (within three months) intra-articular corticosteroid injection and past or current medical history of autoimmune disease (i.e. rheumatoid arthritis).
- In addition, no patients involved in a worker's compensation claim or personal injury litigation were enrolled in the study.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Surgical outcome: pain and functionality
Time frame: 12-24wk post-operative.
1 secondary outcome
Expression profiles of inflammatory mediators
Time frame: 24wk
Results and safety
The study was withdrawn before enrolling participants, so there are no results.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 4 Jun 2019.
Related trials for Inflammation
Not yet recruitingPhase 2/3
A Pivotal Safety and Immunogenicity GBS-NN/NN2 Vaccine Maternal Immunisation Trial
Streptococcus Agalactiae Infection, Neonatal Sepsis
RecruitingPhase 1
Pilot Study to Identify the Mediators and Inflammatory Cell Surface Receptors Involved in Allergic Airway Inflammation
Asthma
RecruitingPhase 4
Lidocaine Infiltration and Neuroimmunomodulation in Head and Neck Cancer Surgery
Head and Neck Cancer (H&N)
Active, not recruiting
CT for Personalized Mechanical Ventilation
Ventilator-Induced Lung Injury, Sepsis Syndrome
RecruitingPhase 4
A Study to Compare the Efficacy and Safety of Extended and Intermittent Infusion of Beta-lactams in Critically Ill Paediatric Patients
Infection, Sepsis
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.
Jason L Dragoo, MD principal investigator
Stanford University
Eric Leroux study chair
Stanford University
Amy Wasterlain study chair
Stanford University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Inflammation, run by Stanford University 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 1 inclusion and 3 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: withdrawn, as of the sponsor's last update on 4 Jun 2019. 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.
Are results available for this study?
The study was withdrawn before enrolling participants, so there are no results.
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?
Surgical outcome: pain and functionality (time frame: 12-24wk post-operative.). 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 4 Jun 2019.