Mechanisms Behind Development of Tendinopathy

NCT ID: NCT02797925

Last Updated: 2018-01-19

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Total Enrollment

400 participants

Study Classification

OBSERVATIONAL

Study Start Date

2016-06-30

Study Completion Date

2020-06-30

Brief Summary

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There has been an increasing amount of musculoskeletal injuries the past decades and overused tendons represents a major problem both for leisure and occupational activities. A full understanding of the pathophysiology of tendinopathy is very sparse and especially the early events in tendinopathy remains unexplained. In this phd study the investigators will investigate early changes in tendon tissue overloading and development of tendinopathy. The investigators will investigate sports-active individuals with recently developed tendinopathy with regards to symptoms (pain, function), tendon morphology (ultrasonography, MRI and electron microscopy), tendon mechanical properties (ultrasonography strain), tissue molecular biology (expression and content of matrix proteins), inflammation (activity of inflammatory pathways) and vascularization (Doppler and contrast enhancement US). The investigators hypothesize a coupling between early symptoms and inflammatory activity, followed by structural changes and altered mechanical properties. The investigation will indicate what symptoms and what tendon related determined measurements are primary for disease development ("tendinopathy blue prints") and should be regarding vital in prevention of tendinopathy.

Detailed Description

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The investigators intend to study the development of tendinopathy in humans that enter a phase of relative overloading of their tendons. This will be done in a large cohort of individuals from whom the investigators have obtained basic data and tests. A percentage of these participants will develop overuse symptoms and in those the investigators will perform investigations that will identify the initial pathological changes in tendinopathy

Participants are included as soon as possible after diagnosis of either Achilles or patella tendinopathy because the investigators wish to investigate the early changes in tendinopathy. The hypothesis is, that at the early development of tendinopathy there will be a mismatch between matrix protein anabolic and catabolic pathways, and will be associated with a secondary upregulation of inflammatory and apoptotic markers in the tendon and result in hypervascularization and hyper-metabolism.

Recruiting participants will be done in collaboration with local athletic clubs in the Copenhagen area. The athletic clubs include Sparta, Københavns Idræt Forening (KIF), Frederiksberg Idræt Forening (FIF). Furthermore, the investigators will establish contact through online social media such as Facebook, Twitter and Google. In addition, Information leaflets will be handed out, and medical staff at the emergency rooms repeatedly informed about the project. Healthy participants can be directly recruited by participants already in the project, social medias and through information leaflets handed out. It is planned to inform staff at the emergency rooms at Bispebjerg Hospital, Amager Hospital, Gentofte Hospital, Herlev Hospital and Hvidovre Hospital. Patients and healthy controls can contact the primary investigator directly through email or telephone.

Recruitment to project TESINaC will focus onset of exercise pain and every participant will be evaluated by a doctor if the participant have tendinopathy or not. Once included the participant will undergo following procedures as soon as possible after diagnosis is given:

* Questionnaire regarding training history and ongoing symptoms
* Ultrasound scanning of tendons
* Ultrasound isometric
* Blood samples
* MRI of tendons on both legs MRI precedes biopsy as it can identify any diseased area within the tendon from which a biopsy can be taken. Only participants with tendinopathy will have to undergo biopsy from both patella tendons once during the project. Healthy participants will not undergo biopsy. No biopsy will be taken from the Achilles tendon as this procedure may worsen the participants symptoms.

Participants with tendinopaty will get physical reevaluated after 3, 6 and 12 months as regards to symptoms, activity of daily life, blood samples, questionnaires VISA-A/P and ultrasound measurements. Rehabilitation training of patients is expected to start as soon as possible after the biopsy have been taken.

Healthy participants will not be reevaluated nor will they undergo rehabilitation training.

It is expected that the results from this study will provide insight into the events leading up to a developing tendinopati. This study will add important information to understand the pathophysiology and provide information on timing of the phases as well. Information and results from the study will give insight into better treatment options that is more specific and earlier intervention on the individual basis. Furthermore, this study will investigate and address the question why some people develop tendinopathies and others do not when the training volume is equally raised.

Conditions

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Tendinopathy

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

PROSPECTIVE

Study Groups

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Tendinopathy

Long slow strength training for 3 months that are performed at home or gym. Participants receive initial guidance to the exercises from a physiotherapist assigned to Bispebjerg H.

Training

Intervention Type OTHER

Long slow strength training of the tendon for 3 months to improve function

Healthy

No intervention. No training

No interventions assigned to this group

Interventions

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Training

Long slow strength training of the tendon for 3 months to improve function

Intervention Type OTHER

Other Intervention Names

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Long slow strength training

Eligibility Criteria

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Inclusion Criteria

* Marked tendon related pain in association with exercise on one leg
* Soreness during physical examination of patella or/and Achilles tendon upon palpation
* Demonstrate an ultrasonographic (US) thickening of the tendon (2 mm larger on the affected side vs the contralateral un-symptomatic side in the anterior-posterior projection)

Exclusion Criteria

* Surgery in Achilles and/or patella tendon
* History of Achilles and/or patella tendinopathy
* Received any form of injection in Achilles and/or patella tendon
* Lately have infection around Achilles and/or patella tendon
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University of Copenhagen

OTHER

Sponsor Role collaborator

Bispebjerg Hospital

OTHER

Sponsor Role lead

Responsible Party

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Peter Hung Thanh Tran

Doctor, phd student

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Michael Kjær, Professor

Role: STUDY_DIRECTOR

Clinical Medicine

Locations

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Bispebjerg Hospital

Copenhagen, Kbh NV, Denmark

Site Status RECRUITING

Countries

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Denmark

Central Contacts

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Peter Tran, Doctor

Role: CONTACT

+45 27428164

Facility Contacts

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Peter Tran, Doctor

Role: primary

0045 35316086

Nikolaj Malmgaard-Clausen, Doctor

Role: backup

Other Identifiers

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BBH-128

Identifier Type: -

Identifier Source: org_study_id

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