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Identification of Kinematic Variables Specific of Patellar Tendinopathy in Athletes at Risk

Sponsor: University Hospital, Montpellier • ClinicalTrials.gov ID: NCT07406516

Registry updated: 2026-09-21

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Description

This research aims to identify and monitor specific kinematic markers associated with patellar tendinopathy in athletes at risk. Using a markerless motion capture system, vertical jump tests will be analyzed to detect early biomechanical changes in the knees, hips, trunk, and ankles. By comparing injured participants, the study seeks to improve early diagnosis and personalized prevention strategies for patellar tendinopathy.

Interventions

The intervention consists of a series of vertical jump tests captured using high-resolution cameras with markerless motion capture technology. (Diagnostic test)
Participants will undergo clinical evaluations including the Single Leg Decline Squat (SLDS) test, VISA-PF, OSTRC-P questionnaires, and Doppler ultrasound of the patellar tendon. These assessments will take place at baseline (T0) and follow-up periods (M3, M6, M9, M12) to track the evolution of kinematic markers and clinical symptoms related to patellar tendinopathy.
The intervention consists of a series of vertical jump tests captured using high-resolution cameras with markerless motion capture technology at 6 months and 12 months (Diagnostic test)
Participants will undergo clinical evaluations including the Single Leg Decline Squat (SLDS) test, VISA-PF, OSTRC-P questionnaires, and Doppler ultrasound of the patellar tendon. These assessments will take place at baseline (T0) and follow-up periods ( M6 et M12) to track the evolution of kinematic markers and clinical symptoms related to patellar tendinopathy.

Eligibility criteria

* Subject aged between 18 and 45 years * Male subject * Regularly participating in physical activity involving jumping (a predisposing factor for patellar tendinopathy) twice a week for at least one year. * Participants affiliated with or covered by a social security scheme SPECIFIC INCLUSION CRITERIA FOR THE PATELLAR TENDINOPATHY GROUP Patients with at least 2 of the following 3 criteria: * Modified Öhberg score ≥2 according to L Öhberg, H Alfredson (2002) * VISA-PF \< 80/100 according to Kaux et al. (2016) and/or OSTRC P ≥ 6/100 according to Owoeye et al. (2018) * Single Leg Decline Squat (SLDS): VAS ≥ 1/10 with pain mapping at the patellar tendon; according to Coombes et al. (2020) SPECIFIC INCLUSION CRITERIA FOR THE HEALTHY GROUP Patients with 0 or 1 of the following 3 criteria: * Modified Öhberg score ≥2 according to L Öhberg, H Alfredson (2002) * VISA-PF \< 80/100 according to Kaux et al. (2016) and/or OSTRC P ≥ 6/100 according to Owoeye et al. (2018) * Single Leg Decline Squat (SLDS): VAS ≥ 1/10 with pain mapping at the patellar tendon; according to Coombes et al. (2020) Non inclusion Criteria: * Significant medical and surgical history involving the lower limbs (e.g., ACL ligament reconstruction, meniscectomy, etc.) * Contraindications to participating in sports activities * Other pathologies involving the lower limbs (\< 6 months), e.g., torn knee ligaments, ankle sprain, knee sprain, etc. * Participants who have not given their informed consent * Participants subject to legal protection measures (legal guardianship, conservatorship, curatorship) * Participants deprived of their liberty by judicial or administrative decision

Conditions

Patellar Tendinitis Jumper's Knee Musculoskeletal Injuries Knee Injuries

Locations

Sports Medicine and Traumatology LAPEYRONIE Hospital - Montpellier University Hospital — Montpellier, France

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Official Source

Data sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health.

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