Short summary

A population-based cohorte study on patients with conservative and operative treated ACL-rupture from 1995-1999 reported to the Danish National Patient Registry. The aim of the study is to estimate any association of the long-term consequences after non-operative versus operative treatment due to an ACL-rupture concerning re-operations and patient reported outcomes. 

Rationale

ACL-rupture is a common knee injury with approximately 2500 registered surgeries in Denmark each year. Of all patients with ACL-ruptures roughly two in three are treated with surgery - the other part conservatively. ACL-ruptures can lead to decrease in joint stability and level of activity as well as osteoarthritis and pain. 

Currently there is no clear consensus on whether surgery or conservative treatment has the best outcome. Our goal is to help clinicians and patients choose the best long term solution for ACL-rupture. To do this we will look into The Danish National Patient Registry from 1995-1999 to do af 20 year follow up to primarily look into re-operation frequency. An electronic questionnaire will be sent to the patients with Knee Injury and Osteoarthritis Outcome Score (KOOS), Tegner-Lysholm score, EQ5D-3L and additional anchor questions. 

Description of the cohort

Patients with ACL-rupture treated with surgery or conservatively reported in The Danish National Patient Registry from 1995-1999.

Data and biological material

Age, sex, diagnoses, re-operation, comorbidity, questionnaries.