Imaging Location of Hamstring Muscle Lesions in Sport and Relationships With Injury Mechanism.

Study Overview
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Brief Summary
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Hamstring muscle injuries are a common pathology in sports mainly present in sprint and acceleration sports, accounting for about 12% of all football injuries. Because of their frequency, risk of reinjury and financial cost, they can be considered as a public health problem. Improving knowledge of the pathophysiology of hamstring muscle injury appears to be a relevant research focus for prevention purposes.

Detailed Description
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This study is a cohort of athletes in the context of suspicion of hamstring muscle injuries.

Official Title
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Imaging Location of Hamstring Muscle Lesions in Sport and Relationships With Injury Mechanism.

Conditions
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Sport Injury, Hamstring Muscle Lesions

Intervention / Treatment
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* Other: Magnetic Resonance Imaging (MRI)
* Other: ultrasound
* Other: Self-questionnaire


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: To be recreational sportsmen, competitions, amateurs, high-level or professional Aged 18 to 50 years Perform an Magnetic Resonance Imaging (MRI) or an ultrasound of the thigh in the context of the suspicion of an acute hamstring muscle injury Injury during sport since less 21 days old. Exclusion Criteria: a history of surgery of the anterior cruciate ligament with removal of the transplant in the posterior compartment of the thigh an antecedent of surgery of the thigh. inability to understand the French language for completing the self-questionnaire

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 50 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| hamstring muscle lesions<br>Patients with hamstring muscle lesions in sport will be included. As usual practice they will have Magnetic Resonance Imaging (MRI) or ultrasound, and will answer to self-questionnaire | Other: Magnetic Resonance Imaging (MRI)<br>* Magnetic Resonance Imaging (MRI) or ultrasound will be performed to determinate location of the lesion<br>Other: ultrasound<br>* Magnetic Resonance Imaging (MRI) or ultrasound will be performed to determinate location of the lesion<br>Other: Self-questionnaire<br>* Self-questionnaire will be completed by patient. In this questionnaire patients will describe the circumstances of the injury and their personal characteristics and level of sporting practice.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| location of the lesion of injury | Correlation between location of the lesion and mechanism of onset of injury. Location of the lesion will be measured by Magnetic Resonance Imaging (MRI) or ultrasound results. For location of the lesion, it is a combination of the injured muscle, damaged tissue and the area in the posterior compartment of the thigh. | at inclusion | 
| mechanism of onset of injury | Correlation between location of the lesion and mechanism of onset of injury. Location of the lesion will be measured by Magnetic Resonance Imaging (MRI) or ultrasound results. Mechanism of onset of injury will be check by self-questionnaire. | at inclusion | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| mapping of hamstring lesions | Analyzed of mapping of hamstring lesions with Magnetic Resonance Imaging (MRI) / ultrasound. Compare the MRI and ultrasound maps and the performance of the two means to determine the location of the lesion. | at inclusion | 
| volumetric analysis of the hamstrings | A standardization of the images to allow a better comparison between individuals | at inclusion | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Magnetic Resonance Imaging (MRI), Ultrasound, Sport, Hamstring muscle, Injury