1.Temporal-Spatial Parameters and Kinematic Characteristics of School-Aged Children with Torticollis Based on Three-Dimensional Gait Analysis
Lüqianqian XIA ; Yang LI ; Yan YU ; XIaoying LU ; Yiying LI ; Shuyun JIANG
Journal of Medical Biomechanics 2025;40(3):599-605
Objective To assess the motor function of school-aged children with congenital muscular torticollis(CMT),and analyze the spatiotemporal parameters of their walking motion as well as the kinematic parameters of the trunk and lower limbs,so as to explore the potential long-term impact of CMT on the growth and development of children.Methods Using three-dimensional(3D)gait analysis technology,the gait of children with CMT was evaluated in detail and compared with that of normal children.The motion angles and ranges of the trunk,pelvis,hip,knee,and ankle joints,along with spatio-temporal parameters,were analyzed.Thirty-one children with CMT aged 6-12 years were recruited into the torticollis group,and 31 normal children of the same age range were included in the control group.The data of the torticollis group were divided into the healthy side and the affected side based on the side of the torticollis.Statistical analysis was performed among the three groups to calculate the differences in kinematic and spatio-temporal parameters.Results Compared with nomal children of the same age in the control group,significant differences were observed in the affected and unaffected sides of the torticollis group in terms of stride length,gait speed,percentage of support phase time,average ankle inversion angle during the swing phase,average ankle inversion angle during the support phase,average foot orientation angle during the support phase,average ankle internal rotation angle relative to the tibia during the stance phase,average knee valgus angle during the stance phase,average shoulder joint elevation,and shoulder joint height at landing.Specifically,the torticollis group had significantly lower stride length,gait speed,ankle inversion angle,knee valgus angle,and foot eversion angle in both the affected and unaffected sides compared to the control group,while the percentage of support phase time and the internal rotation angle of the foot relative to the tibia during the stance phase were higher than those in the control group.Conclusions For school-aged children with CMT,there are still residual manifestations of overall motor development abnormalities.These abnormalities also affect the non-affected side.Children with CMT have a relatively high risk of developing uneven shoulders,their overall walking efficiency is lower than that of normal children of the same age,and they exhibit lower limb motor abnormalities such as insufficient ankle joint stability.
2.Clinical study of Tuina plus exercise therapy in improving lower-limb mechanical parameters in children with genu varum
Xue WANG ; Yang LI ; Yan YU ; Xiaoying LU ; Yiying LI ; Shuyun JIANG ; Jue HONG
Journal of Acupuncture and Tuina Science 2025;23(4):321-327
Objective:To observe the improving effects of Tuina(Chinese therapeutic massage)plus exercise therapy on joint alignment and walking function in children with genu varum(GV).Methods:Sixty-six children with GV were divided into an exercise therapy group and a Tuina plus exercise therapy group using the random number table method,with 33 cases in each group.Both groups received identical exercise therapy,while the Tuina plus exercise therapy group was additionally offered Tuina manipulation treatment.The intervention course lasted 12 weeks in both groups.Before and after the intervention,the three-dimensional gait analysis was adopted to assess the spatiotemporal parameters,kinematics,and kinetic characteristics of lower-limb joints in children with GV.Results:The GV angle was reduced after intervention in the Tuina plus exercise therapy group(P<0.05),but there was no significant change in the exercise therapy group(P>0.05).After treatment,the Tuina plus exercise therapy group demonstrated a notable decrease in the step length,walking speed,peak forefoot adduction angle,and peak ankle inversion moment(P<0.05),suggesting the correction of the ankle joint's compensatory pathological changes.In the exercise therapy group,the foot progression angle(FPA)and gait deviation index(GDI)increased markedly after the intervention(P<0.05),indicating improved overall kinematic function.Conclusion:The combined use of Tuina manipulations and exercise therapy can produce significant effects in correcting the knee joint's torsion,both coronally(GV angle)and horizontally(ankle inversion moment,FPA,and forefoot adduction angle),while exercise therapy alone can markedly improve the overall kinematic parameters(FPA and GDI).
3.(+)-Strebloside induces Non-Hodgkin lymphoma cell death through the STEAP3-Mediated Ferroptosis and MAPK pathway.
Yu ZHAO ; Jing CAI ; Ying YANG ; Dongmei ZHANG ; Jiayi REN ; Shuyun XIAO ; Jian XU ; Feng FENG ; Rong WU ; Jie ZHANG
Chinese Journal of Natural Medicines (English Ed.) 2025;23(10):1221-1231
(+)-Strebloside, a significant bioactive compound isolated from the roots of Streblus asper Lour., demonstrates inhibitory effects against multiple malignancies. However, its specific function and underlying mechanistic pathways in Non-Hodgkin lymphoma (NHL) remain unexplored. This investigation sought to elucidate the role and potential mechanisms of (+)-strebloside-induced NHL cell death. The results demonstrated that (+)-strebloside significantly induced apoptosis and ferroptosis in NHL cells, including those from Raji cell-derived xenograft models. Mechanistic analyses revealed that (+)-strebloside enhanced six-transmembrane epithelial antigen of prostate 3 (STEAP3)-induced ferroptosis in NHL, and STEAP3 inhibition reduced the proliferation-inhibitory effects of (+)-strebloside. Furthermore, (+)-strebloside suppressed NHL proliferation through the mitogen-activated protein kinase (MAPK) pathway, and extracellular signal-regulated kinase (ERK) inhibition diminished the proliferation-inhibitory activity induced by (+)-strebloside. These findings indicate that (+)-strebloside presents promising therapeutic potential for NHL treatment.
Humans
;
Ferroptosis/drug effects*
;
Lymphoma, Non-Hodgkin/physiopathology*
;
Cell Line, Tumor
;
MAP Kinase Signaling System/drug effects*
;
Animals
;
Cell Proliferation/drug effects*
;
Mice
;
Apoptosis/drug effects*
;
Membrane Proteins/genetics*
;
Xenograft Model Antitumor Assays
;
Male
;
Mice, Nude
4.Analysis on the Regional Differences and Equity of High Quality Health Resource Allocation in Primary Healthcare Institutions
Hongbo YU ; Xiaodan HE ; Shuyun ZHANG ; Lijun GAO
Chinese Health Economics 2025;44(2):59-63
Objective:To analyze the regional differences and equity of the high-quality health resource allocation in primary healthcare institutions,and provide decision-making references for improving the equity of high-quality health resource allocation in primary healthcare institutions among provinces in China.Methods:The entropy weight method is used to determine the weights of indicators.Breakpoint method,Gini coefficient and grey correlation method are applied to conduct the classification,equity analysis and influencing factor analysis on the allocation levels of 31 provinces.Results:The Gini coefficients of the supply-demand ratio index in 2011,2016 and 2021 were 0.34,0.33 and 0.34,respectively.Population density,education level,education investment level,public service level,per capita GDP,regional income level and average altitude were the key influencing factors.Conclusion:There are significant differences in the high-quality health resource allocation among community-level medical and health care institutions in different provinces of China,and there are certain issues with equity.It is necessary to comprehensively consider multiple influencing factors to promote the balanced development of high-quality health resource allocation in community-level medical and health care institutions in China.
5.Effects of Generalised Joint Hypermobility on Walking Function in School-Age Children
Yan YU ; Shuyun JIANG ; Yiying LI ; Xiaoying LU ; Yang LI
Journal of Medical Biomechanics 2025;40(2):323-328
Objective To investigate the gait characteristics of school-age children with generalised joint hypermobility(GJH).Methods The kinematic and kinetic data of lower extremity joints in 56 children with GJH and 56 healthy children were collected by 3D motion capture system and 3D force plates,and the differences between the two groups were compared and analyzed.Results Kinematics parameters:the mean ankle inversion angle(P=0.000),maximum hip adduction angle(P=0.002)and maximum foot clearance angle(P=0.004)in stance phase decreased in the GJH children group,while the mean foot progression angle(P=0.000),the maximum foot internal rotation angle(P=0.000)in stance phase,and the knee flexion angle(P=0.032)in the middle stance phase increased.Kinetics parameters:the maximum power of knee(P=0.005)and hip(P=0.000)joints and the maximum inversion moment of ankle joints(P=0.009)in stance phase decreased in GJH children group.Temporal and spatial parameters:the step length(P=0.001),walking velocity(P=0.000),and cadence(P=0.000)decreased in GJH children group,while the stance phase percentage(P=0.000),and step width(P=0.000)increased.Conclusions There is a decrease in walking efficiency and balance stability of children with GJH.The line alignment is abnormal in ankle joint.The knee function needs a long-term attention.
6.Effects of Generalised Joint Hypermobility on Walking Function in School-Age Children
Yan YU ; Shuyun JIANG ; Yiying LI ; Xiaoying LU ; Yang LI
Journal of Medical Biomechanics 2025;40(2):323-328
Objective To investigate the gait characteristics of school-age children with generalised joint hypermobility(GJH).Methods The kinematic and kinetic data of lower extremity joints in 56 children with GJH and 56 healthy children were collected by 3D motion capture system and 3D force plates,and the differences between the two groups were compared and analyzed.Results Kinematics parameters:the mean ankle inversion angle(P=0.000),maximum hip adduction angle(P=0.002)and maximum foot clearance angle(P=0.004)in stance phase decreased in the GJH children group,while the mean foot progression angle(P=0.000),the maximum foot internal rotation angle(P=0.000)in stance phase,and the knee flexion angle(P=0.032)in the middle stance phase increased.Kinetics parameters:the maximum power of knee(P=0.005)and hip(P=0.000)joints and the maximum inversion moment of ankle joints(P=0.009)in stance phase decreased in GJH children group.Temporal and spatial parameters:the step length(P=0.001),walking velocity(P=0.000),and cadence(P=0.000)decreased in GJH children group,while the stance phase percentage(P=0.000),and step width(P=0.000)increased.Conclusions There is a decrease in walking efficiency and balance stability of children with GJH.The line alignment is abnormal in ankle joint.The knee function needs a long-term attention.
7.Temporal-Spatial Parameters and Kinematic Characteristics of School-Aged Children with Torticollis Based on Three-Dimensional Gait Analysis
Lüqianqian XIA ; Yang LI ; Yan YU ; XIaoying LU ; Yiying LI ; Shuyun JIANG
Journal of Medical Biomechanics 2025;40(3):599-605
Objective To assess the motor function of school-aged children with congenital muscular torticollis(CMT),and analyze the spatiotemporal parameters of their walking motion as well as the kinematic parameters of the trunk and lower limbs,so as to explore the potential long-term impact of CMT on the growth and development of children.Methods Using three-dimensional(3D)gait analysis technology,the gait of children with CMT was evaluated in detail and compared with that of normal children.The motion angles and ranges of the trunk,pelvis,hip,knee,and ankle joints,along with spatio-temporal parameters,were analyzed.Thirty-one children with CMT aged 6-12 years were recruited into the torticollis group,and 31 normal children of the same age range were included in the control group.The data of the torticollis group were divided into the healthy side and the affected side based on the side of the torticollis.Statistical analysis was performed among the three groups to calculate the differences in kinematic and spatio-temporal parameters.Results Compared with nomal children of the same age in the control group,significant differences were observed in the affected and unaffected sides of the torticollis group in terms of stride length,gait speed,percentage of support phase time,average ankle inversion angle during the swing phase,average ankle inversion angle during the support phase,average foot orientation angle during the support phase,average ankle internal rotation angle relative to the tibia during the stance phase,average knee valgus angle during the stance phase,average shoulder joint elevation,and shoulder joint height at landing.Specifically,the torticollis group had significantly lower stride length,gait speed,ankle inversion angle,knee valgus angle,and foot eversion angle in both the affected and unaffected sides compared to the control group,while the percentage of support phase time and the internal rotation angle of the foot relative to the tibia during the stance phase were higher than those in the control group.Conclusions For school-aged children with CMT,there are still residual manifestations of overall motor development abnormalities.These abnormalities also affect the non-affected side.Children with CMT have a relatively high risk of developing uneven shoulders,their overall walking efficiency is lower than that of normal children of the same age,and they exhibit lower limb motor abnormalities such as insufficient ankle joint stability.
8.Analysis on the Regional Differences and Equity of High Quality Health Resource Allocation in Primary Healthcare Institutions
Hongbo YU ; Xiaodan HE ; Shuyun ZHANG ; Lijun GAO
Chinese Health Economics 2025;44(2):59-63
Objective:To analyze the regional differences and equity of the high-quality health resource allocation in primary healthcare institutions,and provide decision-making references for improving the equity of high-quality health resource allocation in primary healthcare institutions among provinces in China.Methods:The entropy weight method is used to determine the weights of indicators.Breakpoint method,Gini coefficient and grey correlation method are applied to conduct the classification,equity analysis and influencing factor analysis on the allocation levels of 31 provinces.Results:The Gini coefficients of the supply-demand ratio index in 2011,2016 and 2021 were 0.34,0.33 and 0.34,respectively.Population density,education level,education investment level,public service level,per capita GDP,regional income level and average altitude were the key influencing factors.Conclusion:There are significant differences in the high-quality health resource allocation among community-level medical and health care institutions in different provinces of China,and there are certain issues with equity.It is necessary to comprehensively consider multiple influencing factors to promote the balanced development of high-quality health resource allocation in community-level medical and health care institutions in China.
9.Clinical study of Tuina plus exercise therapy in improving lower-limb mechanical parameters in children with genu varum
Xue WANG ; Yang LI ; Yan YU ; Xiaoying LU ; Yiying LI ; Shuyun JIANG ; Jue HONG
Journal of Acupuncture and Tuina Science 2025;23(4):321-327
Objective:To observe the improving effects of Tuina(Chinese therapeutic massage)plus exercise therapy on joint alignment and walking function in children with genu varum(GV).Methods:Sixty-six children with GV were divided into an exercise therapy group and a Tuina plus exercise therapy group using the random number table method,with 33 cases in each group.Both groups received identical exercise therapy,while the Tuina plus exercise therapy group was additionally offered Tuina manipulation treatment.The intervention course lasted 12 weeks in both groups.Before and after the intervention,the three-dimensional gait analysis was adopted to assess the spatiotemporal parameters,kinematics,and kinetic characteristics of lower-limb joints in children with GV.Results:The GV angle was reduced after intervention in the Tuina plus exercise therapy group(P<0.05),but there was no significant change in the exercise therapy group(P>0.05).After treatment,the Tuina plus exercise therapy group demonstrated a notable decrease in the step length,walking speed,peak forefoot adduction angle,and peak ankle inversion moment(P<0.05),suggesting the correction of the ankle joint's compensatory pathological changes.In the exercise therapy group,the foot progression angle(FPA)and gait deviation index(GDI)increased markedly after the intervention(P<0.05),indicating improved overall kinematic function.Conclusion:The combined use of Tuina manipulations and exercise therapy can produce significant effects in correcting the knee joint's torsion,both coronally(GV angle)and horizontally(ankle inversion moment,FPA,and forefoot adduction angle),while exercise therapy alone can markedly improve the overall kinematic parameters(FPA and GDI).
10.Characterization Analysis of the Symmetry of Gait Parameters in Children with Mild Leg Length Discrepancy
Xiaoying LU ; Yang LI ; Yiying LI ; Yan YU ; Shuyun JIANG
Journal of Medical Biomechanics 2024;39(6):1175-1181
Objective To analyze the symmetry characteristics of gait dynamics,kinematics,and spatial and temporal parameters in children with mild leg length discrepancy(LLD)and evaluate the likely influence or risk of LLD on children's growth to provide a theoretical basis for early assessment and intervention.Methods Using a modified conventional three-dimensional model,31 markers were placed on the body surface of each subject to collect the gait parameters and calculate the symmetry index(SI).The spatial distance of the ipsilateral markers between the anterior superior iliac spine-external knee-external ankle in the standing position was recorded as the leg length.Then,59 children with leg length difference in the range of 0.5 cm

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