Synovial Fluid Characteristics and Pain Recovery Trajectory Following Rehabilitation in Patients with Meniscal Tears: A Retrospective Cohort Study

Pain recovery following rehabilitation in patients with meniscal tears appears to be influenced more by intra-articular biological characteristics than by structural imaging severity alone. Synovial erythrocyte positivity may indicate a potentially reversible inflammatory phenotype associated with higher early pain but greater subsequent improvement. These findings support a multidimensional model of knee pain and suggest that synovial characteristics may help improve clinical risk stratification during rehabilitation planning.