- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04144946
Identification of Early Changes in Patellar Tendinopathy Using Ultra-high Field Strength MRI (7TKnee)
This project will investigate patellar tendon tissue (transmission electron microscopy of structure and protein analyses) coupled with magnetic resonance imaging (1.5T and 7T) from persons with i) chronic patellar tendinopathy (CT), ii) the earliest possible signs and symptoms of patellar tendinopathy (ET), and iii) symptom free controls (CTRL)(matched for age and physical activity/sports participation).
The investigators hypothesize that 7T MRI will be able to detect more subtle changes in early tendinopathy as compared to 3T MRI, thereby taking advantage of the increased spatial resolution that can be obtained in MRI with higher field strength. Further the investigator hypothesise that alterations in the tissue will be more pronounced in the CT group compared to ET and healthy controls.
Study Overview
Status
Conditions
Detailed Description
Study Type
Enrollment (Anticipated)
Contacts and Locations
Study Contact
- Name: Nikolaj Malmgaard-Clausen, MD
- Phone Number: +4538635069
- Email: nikolaj.moelkjaer.malmgaard-clausen@regionh.dk
Study Locations
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NV
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Copenhagen, NV, Denmark, 2400
- Recruiting
- Institute of Sports Medicine Copenhagen
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Contact:
- Nikolaj M. Malmgaard-Clausen, MD
- Phone Number: +4538635069
- Email: nmal0015@regionh.dk
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-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
Common for all groups
- Sports active individuals.
- Age [18-45] years old.
- BMI [18.5-30]
ET - group
- Symptom onset within 90 days at inclusion
- Clinical signs of patellar tendinopathy.
- Activity related pain in the patellar tendon.
- Palpation pain in the proximal part of the patellar tendon.
At least one of the following three changes on the ultrasound scanning:
- Thickening of the AP diameter on the symptomatic side.
- Increased Power Doppler signal on the symptomatic side.
- Hypoechogenic area corresponding to the symptomatic area of the tendon.
CT - group,
- Symptom onset >90 days ago
- Clinical signs of patellar tendinopathy.
- Activity related pain in the patellar tendon.
- Palpation pain in the proximal part of the patellar tendon.
At least one of the following three changes on the ultrasound scanning:
- Thickening of the AP diameter on the symptomatic side.
- Increased Power Doppler signal on the symptomatic side.
- Hypoechogenic area corresponding to the symptomatic area of the tendon.
CTRL - group - Similar activity level as the two patient groups.
Exclusion Criteria:
Common for all groups
- Previous surgery in the knee on the ipsilateral side.
- Previous corticosteroid injection in the patellar tendon on the ipsilateral side.
- Smoking
- Known arthritis
- Known diabetes
- Known hypercholesterolemia
- Previous injections in the ipsilateral tendon.
MRI contraindications
- Ferromagnetic objects
- Pregnancy
- Lactation
ET - group
- Previous injuries in the patellar tendon on the ipsilateral side.
- Started systematized treatment.
CTRL - group
- Previous injuries in the patellar tendon on the ipsilateral side.
Study Plan
How is the study designed?
Design Details
- Observational Models: Case-Control
- Time Perspectives: Cross-Sectional
Cohorts and Interventions
Group / Cohort |
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Healthy control group (CTRL)
Sports active individuals with no history of patellar tendinopathy.
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Early tendinopathy group (ET)
Sports active individuals with clinical signs of early tendinopathy and debut of symptoms within 90 days.
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Chronic tendinopathy group (CT)
Sports active individuals with clinical signs of tendinopathy and duration of symptoms >90 days.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Cross sectional area (CSA) on Magnetic Resonance Imaging knee scans
Time Frame: 0 months, observational cross sectional study.
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Magnetic Resonance Imaging of the knee, used to measure cross sectional area (cm^2)
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0 months, observational cross sectional study.
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Decay times from Magnetic Resonance Imaging knee scans
Time Frame: 0 months, observational cross sectional study.
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Magnetic Resonance Imaging of the knee used to calculate decay times (ms) in the tendon tissue.
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0 months, observational cross sectional study.
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Patellar tendon biopsies
Time Frame: 0 months, observational cross sectional study.
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Tendon biopsies obtained with bard magnum instrument approximately 10 mg.
Used for quantitative mRNA measures expressed as relative values to the expression of a housekeeping gene with stable expression (AU).
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0 months, observational cross sectional study.
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
International Physical Activity Questionnaire (IPAQ)
Time Frame: 0 months, observational cros sectional study.
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IPAQ categorical scores (High, moderate or low activity level) will be reported, to characterise participants activity level
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0 months, observational cros sectional study.
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Body Mass Index
Time Frame: 0 months, observational cross sectional study.
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BMI
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0 months, observational cross sectional study.
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Questionnaires - weekly activity level (time consumption)
Time Frame: 0 months, observational cross sectional study.
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hours/week spend on leisure time activities loading the legs.
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0 months, observational cross sectional study.
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Questionnaires - Numerical Rating Scale (NRS) - Pain
Time Frame: 0 months, observational cross sectional study.
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range 0-10, 10 being the highest possible pain level and 0 being no pain.
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0 months, observational cross sectional study.
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VISA-P
Time Frame: 0 months, observational cross sectional study.
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Standardised score of functional capability, in patient with patellar tendinopathy.
Total score will be reported; scale (0-100).
100=full functional capacity 0=poor functional capacity.
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0 months, observational cross sectional study.
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Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Michael Kjær, Professor, Institute of Sports Medicine, Copenhagen
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- BBH-148
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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