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| ID | Type | Description | Link |
|---|---|---|---|
| 2025-A01948-41 | Registry Identifier | IdRCB |
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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.
Patellar tendinopathy, also known as Jumper's knee, is the most common pathology in elite sports, with 30% of diagnoses occurring in volleyball. Among elite volleyball players, the prevalence of this overuse-related condition ranges between 40% and 50%, resulting in anterior knee pain during daily and recreational activities, which can lead to deficits in strength and sports performance. To date, investigator can determine whether a patient has had a history of tendinopathy through modifications in biomechanical jump-landing strategies. However, there is a lack of early biomechanical markers to identify the onset of patellar tendinopathy and thus prevent its chronic progression. A preventive strategy using markerless motion capture technology, providing quantitative and visual feedback of a 3D human body model, shows promise. Investigators hypothesize that jump-landing kinematic analysis using markerless technology could identify early kinematic markers specific to patellar tendinopathy, distinguishing affected individuals from a non-tendinopathy population. This could ultimately help identify motor strategies following the onset of patellar tendinopathy A prospective longitudinal multicenter cohort. After signing the consent form, participants will undergo a medical examination, including a clinical assessment, a SLDS test, a Doppler ultrasound of the patellar tendon, and evaluation using the VISA-PF and OSTRC-P scores. Following a standardized 10-minute warm-up, participants will perform vertical jump tests captured by high-resolution cameras, analyzed using markerless motion capture technology. These assessments will be conducted at inclusion and at 3, 6, 9, and 12 months. Additional medical visits will occur if symptoms arise outside of testing.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| patellar tendinopathy group | Experimental | Diagnostic Test: The intervention consists of a series of vertical jump tests captured using high-resolution cameras with markerless motion capture technology. |
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| healthy group | Other | Diagnostic Test: The intervention consists of a series of vertical jump tests captured using high-resolution cameras with markerless motion capture technology. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| 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. |
| Measure | Description | Time Frame |
|---|---|---|
| Variations of knee flexion angle at initial contact at 3 months (only for patients in the patellar tendinopathy group) | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the initial visit and the 3-month visit |
| Variations of knee flexion angle at initial contact at 6 months | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the 3-month visit and the 6-month visit |
| Variations of knee flexion angle at initial contact at 9 months (only for patients in the patellar tendinopathy group) | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the 6-month visit and the 9-month visit |
| Variations of knee flexion angle at initial contact at 12 months | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the 9-month visit and the 12-month visit |
| Variations of the maximum knee flexion angle at 3 months (only for patients in the patellar tendinopathy group) | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. |
| Measure | Description | Time Frame |
|---|---|---|
| Variations of the angle of flexion of the trunk, hips, knees, and ankles at initial contact at 3 months (only for patients in the patellar tendinopathy group) | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the initial visit and the 3-month visit |
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SPECIFIC INCLUSION CRITERIA FOR THE PATELLAR TENDINOPATHY GROUP
Patients with at least 2 of the following 3 criteria:
SPECIFIC INCLUSION CRITERIA FOR THE HEALTHY GROUP
Patients with 0 or 1 of the following 3 criteria:
Non inclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Benjamin BEN ZAKI | Contact | +336 66 09 13 43 | b-benzaki@chu-montpellier.fr |
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Sports Medicine and Traumatology LAPEYRONIE Hospital - Montpellier University Hospital | Montpellier | France |
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| 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. |
|
| Between the initial visit and the 3-month visit |
| Variations of the maximum knee flexion angle at 6 months | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the 3-month visit and the 6-month visit |
| Variations of the maximum knee flexion angle at 9 months (only for patients in the patellar tendinopathy group) | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the 6-month visit and the 9-month visit |
| Variations of the maximum knee flexion angle at 12 months | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the 9-month visit and the 12-month visit |
| Variations of the range of motion (ROM) of the knee between initial contact and maximum flexion angle at 3 months (only for patients in the patellar tendinopathy group) | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the initial visit and the 3-month visit |
| Variations of the range of motion (ROM) of the knee between initial contact and maximum flexion angle at 6 months | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the 3-month visit and the 6-month visit |
| Variations of the range of motion (ROM) of the knee between initial contact and maximum flexion angle at 9 months (only for patients in the patellar tendinopathy group) | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the 6-month visit and the 9-month visit |
| Variations of the range of motion (ROM) of the knee between initial contact and maximum flexion angle at 12 months | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the 9-month visit and the 12-month visit |
| Variations of the angle at the peak of the vertical ground reaction force (VGRF) at 3 months (only for patients in the patellar tendinopathy group) | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the initial visit and the 3-month visit |
| Variations of the angle at the peak of the vertical ground reaction force (VGRF)at 6 months | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the 3-month visit and the 6-month visit |
| Variations of the angle at the peak of the vertical ground reaction force (VGRF) at 9 months (only for patients in the patellar tendinopathy group) | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the 6-month visit and the 9-month visit |
| Variations of the angle at the peak of the vertical ground reaction force (VGRF) at 12 months | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the 9-month visit and the 12-month visit |
| Comparison of variation between healthy group and patellar tendinopathy group of knee flexion angle at initial contact at 6 months | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the two 6-month visits of the two groups |
| Comparison between the healthy group and the patellar tendinopathy group of variation of the maximum knee flexion angle at 6 months | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the two 6-month visits of the two groups |
| Comparison between the healthy group and the patellar tendinopathy group of variations of the range of motion (ROM) of the knee between initial contact and maximum flexion angle at 6 months | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the two 6-month visits of the two groups |
| Comparison between the healthy group and the patellar tendinopathy group of variations of the angle at the peak of the vertical ground reaction force (VGRF)at 6 months | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the two 6-month visits of the two groups |
| Variations of the angle of flexion of the trunk, hips, knees, and ankles at initial contact at 6 months | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the 3-month visit and the 6-month visit |
| Variations of the angle of flexion of the trunk, hips, knees, and ankles at initial contact at 9 months (only for patients in the patellar tendinopathy group) | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the 6-month visit and the 9-month visit |
| Variations of the angle of flexion of the trunk, hips, knees, and ankles at initial contact at 12 months | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the 9-month visit and the 12-month visit |
| Variations of the maximum flexion angle of the trunk, hips, knees, and ankles upon landing at 3 months (only for patients in the patellar tendinopathy group) | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the initial visit and the 3-month visit |
| Variations of the maximum flexion angle of the trunk, hips, knees, and ankles upon landing at 6 months | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the 3-month visit and the 6-month visit |
| Variations of the maximum flexion angle of the trunk, hips, knees, and ankles upon landing at 9 months (only for patients in the patellar tendinopathy group) | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the 6-month visit and the 9-month visit |
| Variations of the maximum flexion angle of the trunk, hips, knees, and ankles upon landing at 12 months | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the 9-month visit and the 12-month visit |
| Variations of the range of motion (ROM) of the trunk, hips, knees, and ankles between initial contact and maximum flexion angle upon landing at 3 months (only for patients in the patellar tendinopathy group) | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the initial visit and the 3-month visit |
| Variations of the range of motion (ROM) of the trunk, hips, knees, and ankles between initial contact and maximum flexion angle upon landing at 6 months | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the 3-month visit and the 6-month visit |
| Variations of the range of motion (ROM) of the trunk, hips, knees, and ankles between initial contact and maximum flexion angle upon landing at 9 months (only for patients in the patellar tendinopathy group) | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the 6-month visit and the 9-month visit |
| Variations of the range of motion (ROM) of the trunk, hips, knees, and ankles between initial contact and maximum flexion angle upon landing at 12 months | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the 9-month visit and the 12-month visit |
| Variations of the angle at the peak of the vertical ground reaction force (VGRF) of the hips, knees, and ankles upon landing at 3 months (only for patients in the patellar tendinopathy group) | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the initial visit and the 3-month visit |
| Variations of the angle at the peak of the vertical ground reaction force (VGRF) of the hips, knees, and ankles upon landing at 6 months | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the 3-month visit and the 6-month visit |
| Variations of the angle at the peak of the vertical ground reaction force (VGRF) of the hips, knees, and ankles upon landing at 9 months (only for patients in the patellar tendinopathy group) | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the 6-month visit and the 9-month visit |
| Variations of the angle at the peak of the vertical ground reaction force (VGRF) of the hips, knees, and ankles upon landing at 12 months | The participant will perform the required vertical jump tests. The kinematic data will be captured by the investigating physical therapist specializing in motion analysis using a camera and markerless technology. | Between the 9-month visit and the 12-month visit |
| ID | Term |
|---|---|
| D007718 | Knee Injuries |
| D014947 | Wounds and Injuries |
| ID | Term |
|---|---|
| D007869 | Leg Injuries |
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