Fig. 1From: Higher aggrecan 1-F21 epitope concentration in synovial fluid early after anterior cruciate ligament injury is associated with worse knee cartilage quality assessed by gadolinium enhanced magnetic resonance imaging 20 years latera Flow diagram of study subjects. b Timeline showing synovial fluid sampling and imaging and arthroscopic acquisitions. The 16-year x-ray examinations were done between 11 and 18 years after the ACL injury, while the 20-year dGEMRIC assessments were done 18 to 23 years after injuryBack to article page