| Objective: To compare the differences in gait patterns between patients with grade Ⅲ meniscus injury and normal people, and to explore the effect of grade Ⅲ meniscus injury on the kinematic characteristics of human lower limbs. Methods: A total of 35 patients with grade Ⅲ meniscus injury were selected as the KMI group and 35 normal patients as the control group. Gender, age, weight, height, body mass index (BMI), occupation and exercise habits of the two groups were matched. The subjects in the two groups were given a three-dimensional Gait analysis system to collect their gaits during normal speed walking, which mainly included the temporal and spatial parameters of the lower limbs, Gait Deviation Index (GDI), Gait Profile Score (GPS) and Gait Variable Scores (GVS). The differences in lower limb kinematics characteristics were compared between the two groups. Results: In terms of temporal and spatial parameters, the step width of the KMI group was larger than that of normal group, and the difference was statistically significant (P＜0.05). When the affected knee was on the right side in the KMI group, the standing phase and leg support phase decreased, and the swinging phase increased, and the difference was statistically significant (P<0.05). When the affected knee was on the left side in the KMI group, the stride time, standing time and swing time of KMI patients increased, while the stride speed and step frequency decreased, and the difference was statistically significant (P<0.05). In terms of gait variability, GPS, pelvis forward and forward tilt, hip flexion and extension, hip rotation, knee flexion and ankle dorsiflexion and plantar flexion increased and GDI decreased in the KMI group when the affected knee was left/right (P<0.05). When the affected knee was right, the GVS of hip adduction and abduction and foot progression in the KMI group was significantly greater than that in the normal group (P<0.05). Conclusion: The results of this study indicate that the gait characteristics of patients with grade Ⅲ meniscus injury are significantly different from those of normal people, and the overall gait quality is decreased, which can provide a theoretical basis for follow-up personalized rehabilitation. |
