Making use of the form memory alloy, being able to install easily, outside reforms the outside counter mother digit and the inside rotation mother digit by greatly and appropriate orthodontic force it offers the counter mother digit reform equipment. It possesses with the reform board which is formed with the form memory alloy outside reforms the outside counter mother digit in the counter mother digit reform equipment, and the fitting which is formed with the cloth condition body which has the elasticity which installs this, aforementioned reform board from direction inside the mother digit in the substance part of the foot in the substance part of 1st fitting and the mother digit is installed with 2nd fitting, at the same time, connection this the open part being formed by the part which is done in the 1st medium foot digit paragraph joint of the reform board, reforms the mother digit outside around this open part as a fulcrum.形状記憶合金を用いて、簡単に装着できて、大きくかつ適切な矯正力で外反母趾、内旋母趾を矯正する外反母趾矯正装具を提供する。外反母趾を矯正する外反母趾矯正装具において、形状記憶合金で形成されている矯正板と、これを取り付ける伸縮性のある布状体で形成されている取付具とを有し、前記矯正板は、母趾内側方向から足の本体部分に第1取付具と母趾の本体部分に第2取付具で取り付けられ、かつ、矯正板の第1中足趾節関節部に接当する部分に開口部が形成されていて、この開口部周囲を支点として母趾を外側に矯正する。
