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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

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 Grønbech Nielsen, PhD., DENMARK Martin Lind, MD, PhD, Prof., DENMARK

Aarhus University Hospital, Aarhus, Region Midtjylland, DENMARK


2023 Congress   ePoster Presentation   2023 Congress   Not yet rated

 

Anatomic Location

Anatomic Structure

Diagnosis / Condition

Treatment / Technique

Ligaments

ACL

Sports Medicine


Summary: When delaying anterior cruciate ligament reconstruction past three or six months after injury, the risk of revision surgery decreases.


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


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