Filbay et al (2017)
Delaying ACL reconstruction and treating with exercise therapy alone may alter prognostic factors for 5-year outcome: an exploratory analysis of the KANON trial.
5year follow up of a prospective RCT comparing 3 groups
1) Exercise therapy plus early ACLR (Surgery within 10 weeks)- 62 people
2) Exercise therapy with delayed ACLR (Median 867 days to surgery)- 30 people
3) Exercise therapy alone - 29 people
All participants (age 18-35, males 73%) had injured their ACL <4weeks ago; Excluded professional sports people and those less than moderately active.