Knee Arthroscopy Cohort Southern Denmark (KACS)

Study Overview
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Brief Summary
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PURPOSE: To investigate the natural time course of patient-reported outcomes after meniscus surgery and identify factors associated with good and bad outcome after surgery.

Official Title
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Knee Arthroscopy Cohort Southern Denmark (KACS)

Conditions
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Meniscus Injury, Knee Osteoarthritis

Intervention / Treatment
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* Procedure: Arthroscopic Meniscus Surgery


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Assigned for arthroscopy on suspicion of a medial and/or lateral meniscus tear. Age >18 years at time of recruitment Having an email address Able to read and understand Danish Exclusion Criteria: Patients who will or have previously undergone surgical reconstruction of the anterior or posterior cruciate ligament (ACL or PCL) in either knee Fracture to the lower extremities (i.e. hip, leg or foot) in either leg within the last 6 months prior to recruitment Not mentally able to reply to the questionnaire

Ages Eligible for Study
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Minimum Age: 18 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 |
| --- | --- |
| Meniscus Injury Patients<br>Patients having surgery for a meniscal tear. | Procedure: Arthroscopic Meniscus Surgery<br>* Surgery to the meniscus - resection or repair.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Knee Injury and Osteoarthritis Outcome Score (KOOS) | Knee specific questionnaire. All domains on the KOOS. Primary end point is change from PRE surgery (assessed 1-14 days prior to surgery) to 52 weeks follow-up. | PRE surgery (assessed 1-14 days prior to surgery) and at 12 weeks and 52 weeks follow-up | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Medical Outcomes Study 36-Item Short Form Health Survey (SF-36) | Generic health survey questionnaire. | PRE surgery (assessed 1-14 days prior to surgery) and at 12 weeks and 52 weeks follow-up. | 
| Patient Acceptable Symptom State (PASS) | Dichotomous outcome (y/n) to the question: Considering your knee function, do you feel that your current state is satisfactory? With knee function you should take into account all activities you have during your daily life, sport and recreational activities, your level of pain and other symptoms, and also your knee related quality of life. | At 12 weeks and 52 weeks follow-up. | 
| Treatment failure (TF) | Patients replying no to the PASS question will also be asked to answer (y/n) the following question: Would you consider your current state as being so unsatisfactory that you think the treatment has failed?. Patients replying, yes to the second question will be defined as experiencing treatment failure (TF). | At 12 weeks and 52 weeks follow-up. |