Higher Day of Surgery Serum Matrix Metalloproteinase-3 Concentration Is Associated With Failing to Achieve the KOOS-4 and IKDC Patient Acceptable Symptom State at 6 Years After ACL Reconstruction

This day of surgery blood test may be helpful in identifying patients at risk of a poor outcome 6 years after ACL reconstruction. In turn, this could help define a target group for evaluating interventions aimed at preventing posttraumatic arthritis.