正常足与外翻足跖骨头下压力与足部负重比例变化的关系

Relationship of the Changes Bteween Plauter Pressure Under Transvers arch of Forefoot of Hallux Valgus and Hormal Foot

目的 :从生物力学角度探讨外翻足前足横弓跖骨头下压力的改变情况。方法 :运用本所生物力学室研制的足底压力测试系统 ,对正常足与外翻足足底压力进行测试 ,并将结果进行统计分析。结果 :随着足部负重比例的增加 ,外翻足前足中间跖骨头下压力的变化较快 ,与正常足相比具有显著差异。结论 :从生物力学角度证明 ,正常足前足具有横弓结构 ,外翻足前足存在横弓塌陷。

Objective: From the biomechanical view, to probe the changes of plantar pressure under transverse arch of forefoot of hallux valgus foot. Methods: By applying the foot pressure measurement system developed by us, we had measured the plantar pressure of 32 normal and hallux valgus foot respectively and then did the statistic analysis of acquired data. Results: With the increasement of bearing ratio, the pressure under the middle metatarsals of hallux valgus foot has a more rapid change. Comparing with that in normal foot, there was significant difference. Conclusions: It is proved from biomechanical view that there is transverse arch in the forefoot of normal and collapsed transverse arch in the forefoot of hallux valgus foot.