About this trial
The investigators intend to establish a national cohort including all persons in the ages from 15-20 years old with patellar instability (PI) or a prior knee injury (ACL-ruptur or meniscus damage) . The cohort will be nicknamed "The Faroese Knee Cohort".
The overall aim is to investigate two groups.
1. The patella instability group, in which we intend to investigate the following.
* Prevalence of patellar dislocation and trochlear dysplasia in the Faroe Islands. * Risk factors for patellar dislocations- * Heredity of trochlear dysplasia. * If there is a specific gene responsible for the development of trochlear dysplasia. * The development of retropatellar artrhosis, its onset and its impact on quality of life and function, 2. Knee injury group (ACL-ruptur or meniscus injury)
* The prevalence of ACL-rupture and/or meniscus injury in this specific group in the Faroe Islands. * The impact on quality of life and function.
Eligibility criteria
Qualifiers
Age between 15-20 years at the start of patient enrolment.
The feeling of patellar instability, or patellar dislocation/near-dislocation.
The person has to be from the Faroe Islands.
All persons under the age of 18 must get written consent by their parents
Disqualifiers
Terminal illness
Mental disabilities and illness, meaning that the patient cannot independently answer the PROM´s and cooperate to the clinical investigation.
Trial design
Treatments tested in this trial
- No intervention is made