Prevalence of Chondromalacia Patella Among Adolescent Dancers - Correlation Between Symptoms and Sonography Findings

Study Overview
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Brief Summary
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Comparing the physical and sonographic findings of dancers with Chondromalacia patella to non-dancers athletes.

Detailed Description
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A cross sectional study in which comparing of dancers to non-dancers athletes will be carried. Specifically, chondromalacia patella will be studied and compared between dancers with and without knee injuries and non-dancers athletes. Study will include detailed function and pain questionnaires, physical findings and sonographic study of the knee joint.

Official Title
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Prevalence of Chondromalacia Patella Among Adolescent Dancers - Correlation Between Symptoms and Sonography Findings

Conditions
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Chondromalacia, Cartilage Diseases

Intervention / Treatment
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* Other: Questionnaires, physical exam, US of the knee


Participation Criteria
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Eligibility Criteria
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Group A - Dancers with knee injury: Inclusion Criteria: Min. 3 hours of classic ballet dancing per week At least 4 years of dancing practice Reported knee pain during the last 6 months Exclusion Criteria: 1. Injury other than knee joint Group B - Dancers without knee injury: Inclusion Criteria: Min. 3 hours of classic ballet dancing per week At least 4 years of dancing practice Reported no musculoskeletal injury during the last 6 months Exclusion Criteria: 1. None Group C - Non-dancers athletes: Inclusion Criteria: 1. Main physical activity is other than dancing Exclusion Criteria: 1. Reported no musculoskeletal injury during the last 6 months

Ages Eligible for Study
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Minimum Age: 14 Years
Maximum Age: 16 Years

Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Dancers with knee injury<br>A cohort of dancers with reported knee injury. Questionnaires, physical exam, US of the knee | Other: Questionnaires, physical exam, US of the knee<br>* Function and pain questioners, physical findings and sonographic study of the knee joint<br>|
| Dancers with no knee injury<br>A cohort of dancers without reported knee injury. Questionnaires, physical exam, US of the knee | Other: Questionnaires, physical exam, US of the knee<br>* Function and pain questioners, physical findings and sonographic study of the knee joint<br>|
| Non-dancers athletes<br>A cohort of non-dancers athletes without knee injuries. Questionnaires, physical exam, US of the knee | Other: Questionnaires, physical exam, US of the knee<br>* Function and pain questioners, physical findings and sonographic study of the knee joint<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Physical evaluation | Knee range of motion, ligament stability, hypermobility, patella grinding and inhibition test | 1 hour | 
| US - sonographic study of the knee evaluation patellar, tibial and trochlear | a sonographic study of the knee evaluating patellar, tibial and trochlear cartilage | 1 hour | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Visual Analog Score for pain | VAS score for pain | 1 hour | 
| Function questionnaire | Questionnaire regarding athletic/dancing activities | 1 hour | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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chondromalacia patellae (CMP), patella