Intervention Effect And Biomechanical Analysis Of Customized Orthopaedic Insole In Adolescents With Paranavicular Pain Syndrome

Objective :(1)To compare the difference of plantar pressure distribution between patients with scaphoid pain syndrome and normal subjects.(2)To observe the changes of biomechanical parameters of feet and evaluation indexes of feet before and after patients wore insoles for three months,and to judge the intervention effect of customized orthopaedic insoles on the scaphoid pain syndrome.Methods: 24 adolescent patients with scaphoid pain syndrome were recruited into the experimental group and 24 healthy adolescent subjects from physical examination were recruited into the control group.VAS score,AOFAS score,dynamic and static plantar pressure data of experimental group and control group were collected and compared.Customized orthopedic insoles were made for the test group.The professional therapists collected the patients' pain score and AOFAS score before wearing the insoles,the first month after wearing the insoles,and the second month after wearing the insoles.The plantar pressure data,AOFAS score and VAS score were measured again for the test group who insisted on completing the intervention 3 months later.The changes of various test data in each stage were compared and analyzed.Results:(1)Comparison results between patients and normal people: Compared with normal people,the arches index of patients' feet increased significantly.When standing,the patient's hind foot load ratio increased(P < 0.01).In the walking state,there is more pressure on the hind and inner feet and excessive load on both feet throughout the gait cycle.(2)Comparison of patients before and after wearing orthotic insoles: after 3months of wearing orthotic insoles,compared with before intervention,all indicators of patients were improved: VAS score decreased and AOFAS score increased,with statistically significant differences(P < 0.01).The arch index was significantly decreased(P < 0.05).When standing,hind foot load ratio,average foot pressure and maximum foot pressure all decreased significantly(P < 0.05).During walking,medial foot load ratio,posterior foot load ratio,average foot pressure and maximum foot pressure all decreased to different degrees,with statistical significance(P < 0.05).Conclusions:(1)Compared with normal subjects,foot pain and limited ankle-foot function were observed in patients with scaphoid pain syndrome.The posterior foot and medial foot load were greater during stationary and natural walking.(2)Customized orthopaedic insoles can reduce patients' subjective pain feeling and improve ankle function.The effect is remarkable.(3)Customized orthopaedic insoles can improve the stress of the patient's foot,correct the biomechanical deviation of the foot when the patient is still and walking,redistribute the stress in each area of the foot,and alleviate local load overload of the foot.