| Objective:To analyze the coordination of lower limb joints in stroke patients with hemiplegic foot drop by three-dimensional gait analysis system.Methods: Fifteen patients with post-stroke hemiplegic foot drop were selected in the treatment group, and 15 healthy persons served as the control group 1 and control group 2 by matching design. The spatio-temporal parameters and kinematic parameters in the two groups were collected during walking, and the elevation curve and gait loop diagram were drawn for coordination analysis.Results: In the treatment group, as compared with the non-hemiplegic side, stride frequency, the prolongation of support percentage, the range of motion (ROM) of hip and knee joint, the range of maximum ankle dorsiflexion angle, shank and foot elevation angle in the hemiplegic side decreased significantly (all P<0.01), while the step length and maximum ankle plantar flexion angle increased significantly (all P<0.01). As compared with the control group 1, step length, pace and stride frequency were significantly reduced, support percentage significantly increased, the ROM of hip, knee and ankle joints, the range of the maximum ankle dorsiflexion angle, and thigh, shank and foot elevation angles decreased significantly in the hemiplegic side of treatment group (all P<0.01). As compared with the control group 2, step length and pace were significantly decreased, the ROM of hip, knee and ankle joints, the range of the maximum ankle plantar flexion angle, thigh, shank, and foot elevation angle significantly decreased in the non-hemiplegic side of treatment group (all P<0.01). As compared with the control group 1, the peak time of thigh elevation angle in the treatment group was significantly delayed (P<0.01). The percentage of variance (PV1) and PV1/PV2 in the hemiplegic side of the treatment group were significantly decreased as compared with the control group 1, and those in the non-hemiplegic side of the treatment group were significantly decreased and PV2 increased as compared with thecontrol group 2 (all P<0.01). As compared with the control group 1 and the control group 2, the gait loop diagram of the hemiplegic side and the non-hemiplegic sides in the treatment group deviated from the normal water drop shape, showing height reduction, tail disappearance and distortion.Conclusion: The gait loop diagram can directly reflect the coordination disorder of the lower limb in stroke patients with hemiplegic foot drop, and the changes of PV values may play an important role in coordination dysfunction. |
