Radiographic Analysis of Hallux Valgus in Women on Weightbearing and Nonweightbearing

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To investigate changes in the radiographic appearance during weightbearing in hallux valgus and to examine the importance of a weightbearing view, a comparative study was performed of accurate dorsoplantar radiographs of 108 symptomatic hallux valgus feet in 73 female patients and 100 normal feet in 69 females, which were taken weightbearing and nonweightbearing. The hallux valgus angle in the hallux valgus group increased on weightbearing, whereas that in the normal group decreased. The intermetatarsal angle between the first and second metatarsals increased on weightbearing in both groups. The degree of the changes of the angles was closely related with the degree of the hallux valgus deformity. The intermetatarsal angle between the fourth and fifth metatarsals decreased on weightbearing in the both groups. A weightbearing view is necessary to evaluate the structural configuration of hallux valgus, because muscle imbalance around the first metatarsophalangeal joint in hallux valgus causes an increase of a hallux valgus angle on weightbearing.

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