24 Month Follow-up of Patients With Osgood Schlatter (OSD)

Study Overview
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Brief Summary
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Osgood Schlatter is a common knee condition, affecting approximately 10% of adolescents. OSD is thought to be a growth related pain conditon, and thus resolve after maturation. Despite this, there a lack of prospective data investigating whether this is in fact the case.

Detailed Description
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This is a prospective cohort study of 51 adolescents (aged 10-14 at baseline) with Osgood schlatter. Participants are followed for two years.

Official Title
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A Prospective Investigation of Osgood Schlatter With 24 Month Follow-up

Conditions
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Osgood-Schlatter Disease, Apophysitis

Intervention / Treatment
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* Other: Activity modification


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 10-14 years of age Pain at tibial tuberosity during two or more of the following activities: Sitting with a bent knee, squatting, running, jumping or stair ambulation Pain during palpation of tibial tuberosity 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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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| OSD<br>51 adolescents with Osgood Schlatter who participated in an activity modification intervention. | Other: Activity modification<br>* Activity modification, exercises and gradual return to sport<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Current knee pain | Participants self-report if they still have knee pain | 24 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Pain intensity | Worst pain in the previous week measured on a visual analogue scale (VAS) from 'no pain' to 'worst imaginable pain' | 24 months | 
| Pain frequency | Frequency of knee pain divided into (almost daily, several times per week, weekly, monthly, rarely, never) | 24 months | 
| Duration of being pain-free | Those who no longer have knee pain will be asked how long since their knee pain resoved | 24 months | 
| Medical attention | Participants will be asked to report if they sought medical attention outside of the intervention | 24 months | 
| Use of pain killers | Participants will be asked if they use painkillers to manage their knee pain (y/n). If yes, they will be asked how often. | 24months | 
| knee injury and osteoarthritis outcomes score (KOOS) sport and activity subscale | knee injury and osteoarthritis outcomes score (KOOS) subscale sport and activity. Minimum 0 points, maximum 100points, with 100 points being the best possible score. | 24 months | 
| Sports participation | Participants will report if they participate in sport. If yes how often and how much/week. They will also report if they have reduced sports participation due to knee pain. | 24 months | 
| Health Related quality of life | Health related quality of life assessed by EQ 5D 3L Y (EuroQol, 5 dimensions, 3 levels for youth). Minimum 0, maximum 1, with higher values indicating higher quality of life. | 24 months | 
| Sleep | Participants will be asked if they find it hard to sleep because of their knee pain (not at all, some nights, most nights). | 24 months |