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2022, Vol. 26 ›› Issue (6): 969-972Anterior cruciate ligament rupture and patellofemoral joint stability before sagittal and axial measurement using MRILi Jie1, 2, Zhang Haitao1, Chen Jinlun2, Ye Pengcheng2, Zhang Hua2, Zhou Bengen2, Zhao Changqing2, Sun Youqiang2, Chen Jianfa2, Xiang Xiaobing2, Zeng Yirong2
Abstract: BACKGROUND: Anterior cruciate ligament rupture is one of the important causes of knee instability. There are few reports on the relationship between anterior cruciate ligament rupture and patellofemoral joint stability. OBJECTIVE: To discuss the relationship between anterior cruciate ligament rupture and patellofemoral stability. METHODS: This was a retrospective case-control study. A total of 65 cases of complete rupture of the anterior cruciate ligament confirmed by knee arthroscopy were set as the study group; 65 healthy persons participating in physical examination were set as the normal group. The parameters related to patellofemoral joint instability were measured in sagittal and axial MRI of the knee and compared between the two groups. The implementation of the study scheme was in accordance with the relevant ethical requirements of the First Affiliated Hospital of Guangzhou University of Chinese Medicine, and the subjects and their families gave full informed consent to the study process. RESULTS AND CONCLUSION: (1) The results tibial tubercle-femoral block spacing was shorter in the study group than that in the normal group (P < 0.05). Patellar tilt angle was significantly larger in the study group than that in the normal group (P < 0.05). (2) There was no statistically significant difference in baseline patella between the two groups (P > 0.05). The baseline value of trochlear and patella trochlear index was significantly lower in the study group than those in the normal group (P < 0.05). (3) It is concluded that completely anterior cruciate ligament rupture can decrease tibial tubercle-trochlear groove distance, increase the patellar tilt angle, rise patellar alta, and change the stability of the patellofemoral joint. It may be the potential risk factor for the patellofemoral arthritis. Key words:anterior cruciate ligament rupture, patellofemoral joint, stability, patellar tilt angle, patellar alta, tibial tubercle-trochlear groove distance |