股骨髁间窝形态、髁间窝宽度指数与前交叉韧带损伤间关系的相关性研究

Relationship between the femoral condyle notch shape,notch intercondylar width and anterior cruciate ligament injury

Objective: To explore the relationship between the femoral condyle notch shape, the intercondylar notch width index (NWI) and anterior cruciate ligament (ACL) injuries by MRI and arthroscopy. Methods:A total of 60 patients were enrolled in the study, including 30 patients with ACL injury, 23 males and 7 females, aged (28.36 ± 8.30) years, 16 cases of left knee, 14 cases of right knee; non-ACL injury 30 patients, 19 males and 11 females, aged (32.69 ± 7.53) years, 13 cases of left knee, 17 cases of right knee, all patients were examined by arthroscopy and MRI diagnosis. The femoral condyles notch shape types was observed and recorded, the width of the femoral condyles and intercondylar notch width were measured for calculating the NWI. Results: (1) Relationship between femoral notch shape and anterior cruciate ligament tear: In 30 patients with ACL injuries in 63.3% (19 cases) of patients intercondylar notch shape "A" type, 36.7% (11 cases) for the "U" type, 0.0% (0 cases) as "W" type, differences between the three, with a statistical significance, were found (P <0.05). (2) Relationship between femoral notch shape and NWI: intercondylar notch shape of "A" type patient in 34.6% (n = 9) of patients NWI were abnormal and intercondylar notch shape of "U" type patient in 30.3% (n = 10) of patients NWI were abnormal, no statistical significance was found (P> 0.05). (3) Relationship between femoral NWI and anterior cruciate ligament tear: Only in 30 patients with ACL injuries in 20.0% (n = 6) of patients NWI were abnormal, whereas 80.0% (24 cases) of patients NWI were normal, indicating a low correlation between the two , not statistically significant (P> 0.05). Conclusion:The Type “A” femoral notch could be a risk factor for ACL injury, while lower NWI may not be a significant risk factor for ACL injury.