Effect of Activity Modification and Exercises in Young Adolescents With Osgood Schlatter Disease.

Study Overview
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Brief Summary
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The purpose of this study is to investigate the effect of activity modification, exercises and a gradual return to sport in adolescents (age 10-14) with Osgood Schlatter disease. The primary outcome is self-reported recovery on a 7-point Likert scale at 3 months. Secondary endpoints include 4 and 8 weeks and 6 and 12 months after inclusion into the project. The adolescents will be recruited from primary schools, general practitioners and through online advertising on Facebook.

Official Title
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Effect of Activity Modification and Exercises in Young Adolescents With Osgood Schlatter Disease.

Conditions
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Osgood Schlatter Disease

Intervention / Treatment
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* Other: Activity modification, exercises and gradual return to sport


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 10-14 years of age Pain at tuberositas patellae during two or more of the following activities: Sitting with a bent knee, squatting, running, jumping or stair ambulation Pain during palpation of tuberositas patellae Knee pain for 6 weeks or more Exclusion Criteria: Other knee conditions that may manifest as anterior knee pain (Patellofemoral pain, iliotibial band syndrome, sinding-larson-johanson disease). Previous surgery Pain from the hip or back that interferes with activities of daily living. Habitual patella luxations Clinical suspicion of meniscal lesion

Ages Eligible for Study
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Minimum Age: 10 Years
Maximum Age: 14 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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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Activity modification, exercises and gradual return to sport<br> | Other: Activity modification, exercises and gradual return to sport<br> <br> |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Self-reported recovery on a 7-point Likert scale |  | 3 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Self-reported recovery on a 7-point Likert scale |  | 4 and 8 weeks + 6 and 12 months after inclusion. | 
| Self-report questionnaire Knee Injury and Osteoarthritis Outcome Score |  | 4, 8 and 12 weeks + 6 and 12 months after inclusion. | 
| Isometric hip and knee extension strength assessed using a strap-mounted dynamometer |  | 4, 8 and 12 weeks after inclusion. | 
| Pressure pain thresholds at tuberositas patella, center of patella and lateral elbow assessed by a hand held pressure algometer. |  | 4, 8 and 12 weeks after inclusion. | 
| Thigh circumference measured using tape measure. |  | 4, 8 and 12 weeks after inclusion. | 
| Vertical jump for height [calculated as the difference between reach height and maximal jump height. This will be measured using a ruler] |  | 4, 8 and 12 weeks after inclusion. | 
| Single leg jump for distance (defined as the maximal length the subject can jump on one leg. Measured using a ruler). |  | 4, 8 and 12 weeks after inclusion. | 
| Flexibility of the hamstrings and quadriceps [measured using goniometer]. |  | 4, 8 and 12 weeks after inclusion. |