Magnetic Resonance T2-Mapping for the Evaluation of Cartilage Degeneration and Graft Maturity After ACL Reconstruction
Objective:To investigate the role of magnetic resonance T2-mapping in the assessment of cartilage degeneration and graft maturity after ACL reconstruction.Methods:A total of 51 patients with ACL injury admitted to the Department of Orthopedics of our hospital from December 2019 to September 2022 were selected as the observation group,and 51 cases of normal adult as the control group.The differences between knee cartilage T2 values,intraarticular segment graft T2 values were compared between the two groups.The correlation between graft ADC and T2 values and clinical function scores(IKDC and Lysholm)in the early and middle postoperative period of the observation group was analyzed.Results:At 12 months after surgery,the cartilage T2 values in the LF weight-bearing area,MF-weight-bearing area and MT area in the observation group were significantly higher than those in the normal control group.The T2 values of the proximal,middle,distal and entire intraarticular segment of the observation group were significantly higher than those of the control group 6 months after operation,and the T2 values of the proximal intra-articular graft in the 6 months after surgery were significantly higher than those in the distal and mid-articular segments.Conclusion:Magnetic resonance T2-mapping has some value in the assessment of cartilage degeneration and graft maturity after anterior cruciate ligament reconstruction of the knee.