The risk factors and plantar pressure characteristics of hallux valgus

doi:10.3969/j.issn.2095-4344.2016.42.018

Abstract：BACKGROUND:Complex anatomic deformity of the foot due to hal ux valgus results in the changes of plantar biomechanics. <br> OBJECTIVE:To analyze the risk factors of hal ux valgus and to detect the plantar pressure of hal ux valgus in natural walking. <br> METHODS:The dynamic plantar pressures of 50 patients and 30 age-, height-and weight-matched normal persons were respectively tested by the Footscan USB2 system (RSscan International, Belgium). Al subjects were detected during barefoot walking over three times, to obtain the dynamic plantar pressure curves and characteristic parameters for further analysis. <br> RESULTS AND CONCLUSION:Among patients with hal ux valgus, women accounted for 94%(al wearing pointed high-heeled shoes), men accounted for 6%(none wearing pointed high-heeled shoes), and 96%had a genetic history. During the natural walking, the first metatarsal pressure of hal ux valgus feet was increased significantly, which markedly differed from the normal people. The average peak pressure, average load, and average impulse of the first metatarsal in hal ux valgus patients were significantly increased compared with the normal controls (P<0.05 or P<0.01). These results show that wearing high-heeled pointed shoes is another important factor of the hal ux valgus in addition to genetic factors. Pressure, load, impulse of the first metatarsal in hal ux valgus patients are markedly increased contributing to the occurrence and development of the hal ux valgus. Al above findings provide an important basis for the prevention, treatment and functional rehabilitation of hal ux valgus.