The Faroese Knee Cohort: Etiology and Long-term Implications of Trochlear Dysplasia and Patellar Dislocations.

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.

NCT Number	NCT04607538
Lead Sponsor	Hvidovre University Hospital
Conditions	Patellar Dislocation, ACL Injury, Meniscus Lesion, Trochlear Dysplasia
Enrollment	100 participants
Start Date	2022-03-01
Primary Completion	2024-11-01 (estimated)
Study Completion	2051-12-01 (estimated)
Updated on ClinicalTrials.gov	2023-02-17