To provide a finger extension auxiliary tool which can extend a finger and a wrist joint which cannot be easily extended due to upper extremity paralysis which is a sequela of apoplexy.SOLUTION: There is provided a finger extension auxiliary tool comprising: a hard plate body 1； a first finger fixing member 2a for fixing a first finger to the hard plate body 1； a finger fixing member 2b for fixing second to fifth fingers； a wrist fixing member 2c for fixing a wrist joint； a ring member 3a for passing the finger fixing member； a ring member 3b for passing the wrist fixing member； at least two first finger fixing member holes 5a； at least two finger fixing member holes 5b； at least two wrist fixing member holes 5c； at least two finger fixing member bands 6a, 6b extended to the finger fixing member 2b, and at least two wrist fixing member bands 6c, 6d. These finger fixing member bands 6a, 6b and wrist fixing member bands 6c, 6d are engaged in a cross joint state.SELECTED DRAWING: Figure 6【課題】脳卒中の後遺症である上肢麻痺により手指が握ったままとなり、開きにくい手指、手根関節を伸展することができる手指の伸展補助具を提供する。【解決手段】硬質板状本体１と、硬質板状本体１に第１指を固定するための第１指固定部材２ａと、第２～第５指を固定するための指用固定部材２ｂと、手根関節を固定するための手根固定部材２ｃと、指用固定部材を通すためのリング部材３ａと、手根固定部材を通すためのリング部材３ｂと、少なくとも２つ以上の第１指固定部材穴５ａと、少なくとも２つ以上の指用固定部材穴５ｂと、少なくとも２つ以上の手根固定部材穴５ｃと、指用固定部材２ｂに延設される少なくとも２つの指用固定部材帯６ａ,６bと少なくとも２つの手根固定部材帯６ｃ,６dとを備えそれぞれの指用固定部材帯６ａ,６bと手根固定部材帯６ｃ,６dとを十字に係合させることを特徴とする手指の伸展補助具。【選択図】図６
