前交叉韧带损伤患者核磁共振的定性诊断与定量指标分析探讨OA

Objective:To explore the qualitative diagnosis and quantitative indicators of magnetic resonance imaging in patients with anterior cruciate ligament injury.Methods:102 patients with anterior cruciate ligament injury of the knee joint admitted to our hospital from April 2020 to December 2022 were selected as the injury group,at the same time,102 subjects who came to our hospital for physical examinations were collected as the health group during the same time period.Both groups underwent MRI diagnosis and evaluation of the knee joint,analyzing the correlation between knee joint function score and MRI imaging characteristics.Results:The postoperative Lyshlom score of 102 patients in the injury group was(80.33±2.12)points,and the incidence of knee instability was 19.4%.The Lyshlom score of the healthy group was(95.33±1.91)points.Comparison of Lyshlom scores between the two groups,the differences was statistically significant(P<0.05).Among the 102 patients in the injury group,98 cases had correct internal mouth position and 4 cases were abnormal,with an abnormal rate of 3.9%.Among the 102 patients in the injury group,82 patients with knee joint stability had a bone tunnel enlargement rate of(25.13±1.48)%and(25.17±2.14)%in the femur and tibia at 3 months after surgery,respectively;The expansion rates of femoral and tibial bone tunnels in 20 patients with knee instability at 3 months after surgery were(25.32±1.01)%and(25.04±1.82)%,respectively.Intragroup comparison,the differences was not statistically significant(P>0.05).The average T2 value of the anterior cruciate ligament in the healthy group was(23.11±1.66),while in the injured group,the average T2 value of the reconstructed graft at 3 months after surgery in stable knee patients was(28.53±1.74),and in unstable knee patients,the average T2 value of the reconstructed graft at 3 months after surgery was(32.43±2.04),Comparison of T2 values in three groups,the differences was statistically significant(P<0.05).Conclusion:Magnetic resonance imaging can effectively demonstrate the imaging characteristics of knee joint stability after anterior cruciate ligament reconstruction surgery,and can sensitively reflect the bone tunnel and anterior cruciate ligament situation of the knee joint.It has good clinical guidance value for evaluating knee joint stability.