The Radiological Study On The Correlation Of Flat Foot And Hallux Valgus

OBJECTIVEThrough a sampling survey and case-control study, to compare the variation of medial longitudinal arch angle and hallux valgus angle in the the normal foot and the flat foot, while weight-bearing and non-weight-bearing standing, to explore the correlation of flat foot and hallux valgus, and offering help to the etiological study of hallux valgus.METHODSUsing footprinting method to investigate the foot shape in 335 women worker of a shoemaking factory, after investigating their were grouped into normal foot and flat foot, through random sampling choosing 30 volunteers from tow groups. All the subjects were taken roentgenograph including the standard anterior posterior and lateral of their right foot, while weight-bearing and non-weight-bearing standing. Measuring the radiological parameters including medial longitudinal arch angle and hallux valgus angle. Though statistical analysis, to explore the correlation of flat foot and hallux valgus.RESULT1. In the normal foot group, comparing the medial longitudinal arch angle of weight-bearing with non-weight-bearing standing, the difference was very significant (P<0.01), and the hallux valgus angle was also(P<0.01).2. In the flat foot group, comparing the medial longitudinal arch angle of weight-bearing with non-weight-bearing standing, the difference was very significant (P<0.01), and the hallux valgus angle was also(P<0.01).3. In the normal foot group, the difference of medial longitudinal arch angle and hallux valgus angle between weight-bearing and non-weight-bearing standing had non statistical correlation(p>0.05). In the flat foot group, the difference of medial longitudinal arch angle and hallux valgus angle between weight-bearing and non-weight-bearing standing had very significant statistical correlation(p<0.01).4. In the flat foot group, the difference of medial longitudinal arch angle and hallux valgus angle between weight-bearing and non-weight-bearing standing had linear positive correlation(p<0.01).CONCLUSIONFlat foot was contribute to the formation and development of hallux valgus, flat foot was one of the etiological factor of hallux valgus. Through improving the therapic insoles of flat foot and matching with mild rocker sole, which will prevent and treat the formation and development of hallux valgus.