2023 ISAKOS Biennial Congress ePoster
The Effect of Delaying Anterior Cruciate Ligament Reconstruction More Than 3 or 6 Months on Revision Rates and Knee Stability After 2 Years of Follow-up
Helena Amstrup Jensen, BSc DENMARK
Torsten G. Nielsen, BSc, Aarhus N DENMARK
Martin Lind, MD, PhD, Prof., Aarhus N DENMARK
Aarhus University Hospital, Aarhus, Region Midtjylland, DENMARK
FDA Status Not Applicable
Summary
When delaying anterior cruciate ligament reconstruction past three or six months after injury, the risk of revision surgery decreases.
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Abstract
Objective
The optimal timing of anterior cruciate ligament reconstruction (ACLR) is still uncertain and there is no consensus on whether early or delayed surgery is preferred.
The objective of this study was to investigate the risk of revision surgery when delaying ACLR past 3 months or 6 months after injury.
Methods
A total of 30,280 patients with isolated ACLR were identified in the Danish Knee Ligament Reconstruction Registry and divided into 4 groups; ACLR < 3 months, > 3 months, < 6 months, or > 6 months after injury. Primary outcome was revision surgery and secondary outcome were objective and subjective clinical outcome. 2-year relative risk as well as crude and adjusted hazard ratio (HR) were calculated.
Results
For ACLR < 3 months of injury compared to ACLR > 3 months of injury the 2-year relative risk of revision surgery was found to be 1.81 (95% CI: 1.46; 2.23; P < .001) with an adjusted HR of 1.27 (95% CI: 1.12; 1.44; P < .001). For ACLR < 6 months of injury compared to ACLR > 6 months of injury the 2-year relative risk of revision surgery was found to be 1.61 (95% CI: 1.34; 1.92; P < .001) with an adjusted HR of 1.27 (95% CI: 1.15; 1.40; P < .001).
Conclusion
This study found an increased risk of revision surgery when ACLR was performed < 3 or < 6 months of injury compared > 3 or > 6 months after injury, respectively.
Level of evidence: II