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JP4646360B2 - Hallux valgus prevention shoes and last - Google Patents
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JP4646360B2 - Hallux valgus prevention shoes and last - Google Patents

Hallux valgus prevention shoes and last Download PDF

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JP4646360B2
JP4646360B2 JP2000183403A JP2000183403A JP4646360B2 JP 4646360 B2 JP4646360 B2 JP 4646360B2 JP 2000183403 A JP2000183403 A JP 2000183403A JP 2000183403 A JP2000183403 A JP 2000183403A JP 4646360 B2 JP4646360 B2 JP 4646360B2
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Prior art keywords
shoe
heel
hallux valgus
last
heel side
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JP2002000302A (en
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典央 亀山
浩 岡田
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Achilles Corp
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Achilles Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、外反母趾を防止する靴とその靴の製造に用いる靴型ラストに関する。
【0002】
【従来の技術】
外反母趾とは、中足節関節の部位で、母趾が第5趾の方向に曲がってしまう足の障害をいうのである。しかし、母趾が正常位より何度以上外反したときに外反母趾と言うのか、という明確な定義が定められているわけではない。外反位が軽度であっても、疼痛がひどく、また日常生活に著しい障害をおこすものは治療の対象になる。また、第5趾が、第1趾側に曲がってしまう足の障害は、内反小趾というが、本発明において、外反母趾とは、外反母趾及び内反小趾を総称して論じている。
【0003】
外反の程度が進むと、中足趾節関節の母趾は脱臼位を呈し、第1中足骨は、内側位に偏倚して母趾が外側位に変形し、いわゆる「く」の字に変形してくる。そして殊に中足骨骨頭内側部に発赤、腫脹、疼痛が加わり、滑液包腫脹を発生してくることが多い。最近、成長過程にある子供の足に外反母趾による足の障害が増加し、社会的に早急な対応が求められている。
【0004】
【発明が解決しようとする課題】
外反母趾には、幾つかの要因が考えられるが、靴による影響もその中の一つである。ひとの足は、生まれたときから成長を始め、16〜17歳頃になると成長が止まる、といわれている。
【0005】
子供の足の外反母趾を防止するには、変化している子供の足の側角度に合わせ、足指が靴の中で動かせる余裕があることが必要であるが、従来の靴型設計では、外反母趾に影響を及ぼす第1趾側角度、第5趾側角度は、サイズグレーディングにおいて全サイズで一定に設計され、成長過程にある子供の足の健全な育成について格別の考慮が払われているわけではなかった。元来、足の形状は個人個人によって異なり、個人に専用に誂えた靴を着用している限り、靴による外反母趾の影響はなかったのである。
【0006】
本発明の目的は、子供の足の成長にあわせて称呼サイズ毎に側角度を変化させて足指が靴の中で自由に動かせるように設計した外反母趾予防用の靴と、その靴の製造に用いる靴型ラストを提供することにある。
【0007】
【課題を解決するための手段】
上記目的を達成するため、本発明による靴においては、成長過程にある子供の足指の靴の中での自由な動きを保証する外反母趾予防靴であって、靴の称呼サイズ毎に異なる第1趾及び第5趾に相当する箇所の側角度を有し、
第1趾及び第5趾に相当する箇所の側角度は標準化され、子供の足の成長に合わせて靴の称呼サイズ毎に段階的に増大させたものである
【0009】
また、本発明による外反母趾予防靴用靴型ラストにおいては、成長過程にある子供の足指の動きを保証する形状に設定された外反母趾予防靴用靴型ラストであって、靴の称呼サイズ毎に異なる第1趾側角度及び第5趾側角度を有し、
第1趾側角度及び第5趾側角度の値は、靴の称呼サイズ毎に標準化され、子供の足の成長に合わせて段階的に増大させたものである
【0011】
【発明の実施の形態】
以下に本発明の実施形態を図によって説明する。本発明による外反母趾予防靴は、靴胛被の第1趾、第5趾に相当する個所の側角度を靴の呼称サイズ毎に異ならせた靴型ラストを用いて製作されたものである。
【0012】
図1は、成長過程における標準的な子供の足の骨格構造の変化を、3歳から17歳までについて概略図にて示したものである。図1において、生まれてから3歳頃までは、子供の足の骨は、まだ大人のようにしっかりとした骨が形成されておらず、軟骨の状態である。この頃の足は、指が広がった形(扇形)になっている。
【0013】
骨の骨化は、4歳頃から始まり、次第に大きく、しっかりとしてくる。また、この頃より、歩いたり、走ったりするときの衝撃を吸収する役目をする足のアーチが形成され始めてくる。
【0014】
その後、15歳になるころまでには、さらに形成度は高まり、16〜17歳頃になると足の成長はほぼ終わり、骨の骨化・成長に伴い、足の形は扇形から足指がしまった形になってくる。
【0015】
このように子供の足の第1趾、第5趾側角度は、成長と共に変化しているのである。本発明においては、靴の第1趾、第5趾の側角度を子供の足の成長に合わせ、称呼サイズ毎に側角度を変えることにより、足指が、靴の中での自由な動きを保証するようにしたものである。
【0016】
外反母趾角の側角度の代表的な測定方法を図2に示す。図2において、母趾角の代表的な測定方法には、レントゲン計測法と、全履協計測法と、靴研式計測法とが知られている。外反母趾角は、元来、X線写真により第1中足骨の中央を通る線と、第1基節骨の中央を通る線のなす角度であり、図2(a)に示すレントゲン計測法がこれに該当する。
【0017】
その角度は、外郭線の第1MP関節突出部で母趾の接線と、踵の内側の接線のなす角度がほぼ等しいことから、この角度にて代用する方法が図2(b)に示す全履協計測法である。また、靴研式計測法においては、これとは別に図2(c)に示すように第1MP関節内側突出部で、足の中心線と平行にひいた線と、母趾内側で踵の最高方突出点から16%または18%(これも2通りある)を結んだ線との角度を外反母趾角としている。
【0018】
なお、図2においては、第1趾について図示しているが、第5趾の側角度についても全く同じである。外反母趾角の数値は、レントゲン計測法、全履協計測法、あるいは靴研式計測法の何れの計測結果をもって表してもよいが、この実施形態においては、外反母趾角を靴研式計測法にて表した数値にて示すものとする。靴研式計測法で測定して例えば、図3において、第1趾側角度aが15゜以上を外反母趾であると考える。
【0019】
本発明においては、図3において、第1趾側角度をa、第5趾側角度をbとしたときに、第1趾側角度aの値を年齢にあわせた靴の称呼サイズごとに標準化して例えば、表1の値に設定するものである。
【0020】
【表1】

Figure 0004646360
【0021】
同様に、第5趾側角度bの値を年齢にあわせた靴の称呼サイズごとに標準化して例えば表2の値に設定する。
【0022】
【表2】
Figure 0004646360
【0023】
図4に、靴型ラストの第1趾、第5趾側角度の設定例を示す。この例では、靴型ラストとして、3歳頃用の靴型ラスト1a、5歳頃用の靴型ラスト1b、10歳頃用の靴型ラスト1c、15歳頃用の靴型ラスト1d、17歳頃用の靴型ラスト1eの合計5種類を準備している。3歳頃用の靴型ラスト1aの第1趾側角度をa1、第5趾側角度をb1、5歳頃用の靴型ラスト1bの第1趾側角度をa2、第5趾側角度をb2、10歳頃用の靴型ラスト1cの第1趾側角度をa3、第5趾側角度をb3、15歳頃用の靴型ラスト1dの第1趾側角度をa4、第5趾側角度をb4、17歳頃用の靴型ラスト1eの第1趾側角度をa5、第5趾側角度をb5としたときに、本発明においては、靴型ラストの第1趾、第5趾側角度を、靴型ラストの大小に対し、単純に比例関係によって拡大、縮小するのではなく、子供の足の成長(年齢)に合わせ、それぞれの靴型ラスト1a〜1eについての第1趾側角度a1〜a5は、a1<a2<a3<a4<a5の順に段階的に増大させている。
【0024】
同様に各靴型ラスト1a〜1eの第5趾側角度b1〜b5についても、b1<b2<b3<b4<b5の順に増大させ、各靴型ラスト1a〜1eの第1趾、第5趾側角度を表1、表2に示したような値に標準化したものである。
【0025】
子供の足の成長(年齢)は、靴型ラストの称呼サイズの大小に対応する。表3に、「cm」にて表した靴型ラストの称呼サイズ毎の第1趾、第5趾側角度の設定例を示す。
【0026】
【表3】
Figure 0004646360
【0027】
本発明による外反母趾予防靴としての胛被は、靴の称呼サイズ毎に、第1趾および第5趾の側角度が例えば表3に示す値の範囲に設定された靴型ラストに適合する形状にパターン設計されたものである。靴の称呼サイズ毎にパターン設計された胛被は、それぞれ、表3のサイズに対応するサイズの各靴型ラスト1a〜1eを選定してその靴型ラストに吊り込み、靴金型内で靴底が成形され、成形後、脱型をすることによって、各靴型ラスト1a〜1eの形状に対応し、図5に示すように、3歳頃用の靴2a、5歳頃用の2b、10歳頃用の靴2c、15歳頃用の靴2d、17歳頃用の靴2eが得られる。
【0028】
得られた靴は、靴胛被の第1趾及び第5趾に相当する個所の側角度が靴の称呼サイズ毎に、ひとの足の成長度合いに対応した形状になっている。すなわち、第1趾側角度a1〜a5は、a1<a2<a3<a4<a5の順に段階的に増大し、同様に各靴型ラスト1a〜1eの第5趾側角度b1〜b5についても、b1<b2<b3<b4<b5の順に増大した靴が得られる。特に、例えば呼びサイズが14cm以下(3〜5歳頃用以下)の子供靴では、足指が位置する靴の爪先部位において、靴の中で足指を自由に動かすことができ、幼児期に靴が問題とされている外反母趾を予防できる。
【0029】
【発明の効果】
以上のように、本発明は、成長期にある子供の足の側角度の変化に対応させて、各称呼サイズ毎に、第1趾、第5趾側角度を設定するため、本発明による外反母趾予防靴を成長期にある子供が着用しても、足指の動きに制約を受けず、誂えた靴と同様に靴の中で自由に足指を動かすことができ、したがって、本発明によれば、特に成長過程にある子供の足の正常な育成を促しつつ外反母趾、偏平足の予防に著しい効果を得ることができる。
【0030】
また、本発明によるときには、各称呼サイズごとの靴胛被の第1趾、第5趾側角度を予め標準化しておくことにより、CADシステムを用いて容易に設計することができる。
【図面の簡単な説明】
【図1】成長過程における標準的な子供の足の骨格構造の変化を3歳から17歳までについて概略図にて示した図である。
【図2】外反母趾角の代表的な測定方法を示す図である。
【図3】第1趾側角度と、第5趾側角度を指示する図である。
【図4】靴型ラストの第1趾、第5趾側角度の設定例を示す図である。
【図5】本発明による外反母趾予防靴の例を示す図である。
【符号の説明】
1a〜1e 靴型ラスト
2a〜2e 靴[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a shoe for preventing hallux valgus and a shoe last used for manufacturing the shoe.
[0002]
[Prior art]
The hallux valgus is a disorder of the foot where the heel bends in the direction of the fifth heel at the site of the metatarsal joint. However, there is no clear definition as to whether or not a hallux valgus is said when the hallux valgus more than normal position. Even if the hallux valgus is mild, the pain is severe, and those that cause significant impairment in daily life are treated. Moreover, although the disorder | damage | failure of the foot | leg which the 5th leg | bend bends to the 1st heel side is called a hallux valgus, in the present invention, the hallux valgus and the hallux valgus are discussed generically.
[0003]
As the degree of valgus progresses, the metatarsal joint of the metatarsal joint has a dislocation position, and the first metatarsal bone is biased to the medial position and deformed to the lateral position. It will be transformed into. In particular, redness, swelling, and pain are added to the medial part of the metatarsal bone head, often causing bursa swelling. Recently, the foot damage caused by hallux valgus has increased on the feet of growing children, and there is a need for an immediate social response.
[0004]
[Problems to be solved by the invention]
There are several possible factors for hallux valgus, but the impact of shoes is one of them. It is said that a person's feet start growing from the time they are born and stop growing when they are 16-17 years old.
[0005]
To prevent valgus of the child's foot, it is necessary to allow the toes to move in the shoe according to the changing lateral angle of the child's foot. The first heel side angle and the fifth heel side angle that affect the size are designed to be constant for all sizes in the size grading, and special consideration is not given to the healthy growth of children's feet in the process of growth. There wasn't. Originally, the shape of the foot was different from individual to individual, and as long as shoes were worn exclusively for the individual, the hallux valgus was not affected by the shoes.
[0006]
The object of the present invention is to manufacture a shoe for preventing hallux valgus designed so that the toe can be moved freely in the shoe by changing the side angle for each nominal size according to the growth of the child's foot, and the shoe. The object is to provide a shoe last to be used.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a shoe according to the present invention is a hallux valgus prevention shoe that guarantees free movement of a growing child's toes, and is different in each nominal size of the shoe. Having side angles corresponding to the heel and the fifth heel,
The side angles corresponding to the first and fifth heels are standardized, and are increased step by step for each nominal size of the shoe as the child's feet grow .
[0009]
Further, in the shoe-shaped last for hallux valgus prevention shoes according to the present invention, it is a shoe-shaped last for hallux valgus prevention shoes set in a shape that guarantees the movement of the toes of a child in the process of growth, for each nominal size of the shoes Having different first heel side angles and fifth heel side angles;
The values of the first heel side angle and the fifth heel side angle are standardized for each nominal size of the shoe, and are increased step by step as the child's feet grow .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. The hallux valgus prevention shoe according to the present invention is manufactured using a shoe-type last in which the side angles of the portions corresponding to the first and fifth heels of the shoe garment are different for each nominal size of the shoe.
[0012]
FIG. 1 is a schematic diagram showing changes in the skeletal structure of a standard child foot during the growth process from 3 to 17 years old. In FIG. 1, from the time of birth until about 3 years old, the bones of the child's feet are not yet formed as solid bones as adults, and are in the state of cartilage. The legs at this time are in the form of fingers (fan-shaped).
[0013]
Bone ossification begins around the age of 4 and gradually becomes larger and firmer. In addition, from around this time, an arch of a foot that absorbs shocks when walking or running begins to be formed.
[0014]
After that, by the time he was 15 years old, the degree of formation was further increased, and when he was 16-17 years old, the growth of the foot was almost finished, and with the bone ossification and growth, the shape of the foot changed from a fan shape to a toe. It becomes a shape.
[0015]
Thus, the first and fifth heel side angles of the child's feet change with growth. In the present invention, the side angles of the first and fifth heels of the shoe are adjusted to the growth of the child's foot, and the toe can freely move in the shoe by changing the side angle for each nominal size. This is a guarantee.
[0016]
A typical method for measuring the side angle of the hallux valgus angle is shown in FIG. In FIG. 2, known methods for measuring the recumbent angle include an X-ray measurement method, a full-scale cooperative measurement method, and a shoe lab type measurement method. The hallux valgus angle is originally an angle formed by a line passing through the center of the first metatarsal and a line passing through the center of the first proximal phalanx according to the X-ray photograph, and the X-ray measurement method shown in FIG. This is the case.
[0017]
Since the angle between the tangent line of the main heel and the tangent line inside the heel is almost equal at the first MP joint projection of the outer contour line, the method of substituting this angle is shown in FIG. 2 (b). This is a cooperative measurement method. In addition, in the Shoeken type measurement method, as shown in FIG. 2 (c), a line drawn parallel to the center line of the foot at the first MP joint inner projecting portion and The angle with the line connecting 16% or 18% (which is also two) from the lateral protrusion point is defined as the hallux valgus angle.
[0018]
In FIG. 2, the first rod is illustrated, but the side angle of the fifth rod is exactly the same. The value of the hallux valgus angle may be represented by any of the measurement results of the X-ray measurement method, the full-track cooperative measurement method, or the Shoeken type measurement method, but in this embodiment, the hallux valgus angle is determined by the Shoeken type measurement method. It shall be indicated by the numerical value expressed. For example, in FIG. 3, when the first heel side angle “a” is 15 ° or more, it is considered that the hallux valgus is measured by the Shoeken type measurement method.
[0019]
In the present invention, in FIG. 3, when the first heel side angle is a and the fifth heel side angle is b, the value of the first heel side angle a is standardized for each nominal size of shoes according to age. For example, the values in Table 1 are set.
[0020]
[Table 1]
Figure 0004646360
[0021]
Similarly, the value of the 5th heel side angle b is standardized for every nominal size of shoes according to age, and is set to the value of Table 2, for example.
[0022]
[Table 2]
Figure 0004646360
[0023]
FIG. 4 shows an example of setting the first heel and fifth heel side angles of the shoe last. In this example, the shoe type last 1a for about 3 years old, the shoe type last 1c for about 10 years old, the shoe type last 1d for about 15 years old, 17d as shoe type lasts. A total of five types of shoe type last 1e for the age are prepared. The first heel side angle of shoe type last 1a for about 3 years old is a1, the fifth heel side angle is b1, the first heel side angle of shoe type last 1b for about 5 years old is a2, and the fifth heel side angle is b2, the first heel side angle of shoe type last 1c for about 10 years old is a3, the fifth heel side angle is b3, the first heel side angle of shoe type last 1d for about 15 years old is a4, the fifth heel side In the present invention, when the angle is b4, the first heel side angle of the shoe type last 1e for the age of 17 is a5, and the fifth heel side angle is b5, the first heel and the fifth heel of the shoe type last are used in the present invention. The side angle is not simply enlarged or reduced in proportion to the size of the shoe last, but the first heel side for each shoe last 1a to 1e according to the growth (age) of the child's foot. The angles a1 to a5 are increased stepwise in the order of a1 <a2 <a3 < a4 <a5.
[0024]
Similarly, the fifth heel side angles b1 to b5 of the shoe lasts 1a to 1e are increased in the order of b1 <b2 <b3 <b4 <b5, and the first and fifth heels of the shoe lasts 1a to 1e are increased. The side angle is standardized to the values shown in Tables 1 and 2.
[0025]
The growth (age) of the child's foot corresponds to the nominal size of the shoe last. Table 3 shows an example of setting the first heel and fifth heel side angles for each nominal size of the shoe-shaped last expressed in “cm”.
[0026]
[Table 3]
Figure 0004646360
[0027]
The cover as a hallux valgus prevention shoe according to the present invention has a shape suitable for a shoe type last in which the side angles of the first and fifth heels are set within the range of values shown in Table 3, for each nominal size of the shoes. The pattern is designed. For the hood designed for each nominal size of the shoe, select the shoe lasts 1a to 1e of the sizes corresponding to the sizes in Table 3 and suspend them in the shoe last, and the shoes in the shoe mold The bottom is molded, and after molding, by removing the mold, it corresponds to the shape of each shoe mold last 1a to 1e, as shown in FIG. 5, shoes 2a for about 3 years old, 2b for about 5 years old, A shoe 2c for about 10 years old, a shoe 2d for about 15 years old, and a shoe 2e for about 17 years old are obtained.
[0028]
In the obtained shoes, the side angles of the portions corresponding to the first and fifth heels of the shoe garment have a shape corresponding to the degree of growth of a person's foot for each nominal size of the shoe. That is, the first heel side angles a1 to a5 increase stepwise in the order of a1 <a2 <a3 < a4 <a5. Similarly, the first heel side angles b1 to b5 of the shoe lasts 1a to 1e are also increased. , B1 <b2 <b3 <b4 <b5 in order. In particular, for example, in a children's shoe having a nominal size of 14 cm or less (for 3 to 5 years old or less), the toe can be freely moved in the shoe at the toe portion of the shoe where the toe is located. Can prevent hallux valgus where shoes are a problem.
[0029]
【The invention's effect】
As described above, the present invention sets the first heel and the fifth heel side angle for each nominal size according to the change in the side angle of the child's foot in the growing period. Even when a growing child wears preventive shoes, they are not restricted by the movement of their toes and can move their toes freely in the shoes as well as barking shoes. In particular, it is possible to obtain a remarkable effect in preventing hallux valgus and flat feet while promoting the normal development of the feet of children in the process of growth.
[0030]
In addition, according to the present invention, the first and fifth heel side angles of the shoe covers for each nominal size can be easily designed using a CAD system by standardizing in advance.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing changes in the skeletal structure of a standard child's foot during the growth process from 3 to 17 years of age.
FIG. 2 is a diagram showing a typical method for measuring the hallux valgus angle.
FIG. 3 is a diagram indicating a first heel side angle and a fifth heel side angle.
FIG. 4 is a diagram showing a setting example of first and fifth heel side angles of the shoe last.
FIG. 5 is a view showing an example of a hallux valgus prevention shoe according to the present invention.
[Explanation of symbols]
1a-1e shoe type last 2a-2e shoes

Claims (2)

成長過程にある子供の足指の靴の中での自由な動きを保証する外反母趾予防靴であって、靴の称呼サイズ毎に異なる第1趾及び第5趾に相当する箇所の側角度を有し、
第1趾及び第5趾に相当する箇所の側角度は標準化され、子供の足の成長に合わせて靴の称呼サイズ毎に段階的に増大させたものであることを特徴とする外反母趾予防靴。
A hallux valgus prevention shoe that guarantees free movement in the toe of a child's toes that are in the process of growth, and has side angles corresponding to the first and fifth heels that differ depending on the nominal size of the shoe. And
A lateral valgus prevention shoe characterized in that the side angle of the portion corresponding to the first heel and the fifth heel is standardized and increased step by step for each nominal size of the shoe as the child's foot grows .
成長過程にある子供の足指の動きを保証する形状に設定された外反母趾予防靴用靴型ラストであって、靴の称呼サイズ毎に異なる第1趾側角度及び第5趾側角度を有し、
第1趾側角度及び第5趾側角度の値は、靴の称呼サイズ毎に標準化され、子供の足の成長に合わせて段階的に増大させたものであることを特徴とする外反母趾予防用靴型ラスト。
A shoe-shaped last for a hallux valgus prevention shoe set in a shape that guarantees the movement of the toes of a child in the process of growth, having a first heel side angle and a fifth heel side angle that differ depending on the nominal size of the shoe ,
The values for the first heel side angle and the fifth heel side angle are standardized for each nominal size of the shoe, and are increased step by step with the growth of the child's foot. Type last.
JP2000183403A 2000-06-19 2000-06-19 Hallux valgus prevention shoes and last Expired - Lifetime JP4646360B2 (en)

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RU2278605C1 (en) * 2004-11-22 2006-06-27 ГОУ ВПО Российский заочный институт текстильной и легкой промышленности Shoes for wearer having protruding exostosis of first metatarsal bone
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US8870876B2 (en) 2009-02-13 2014-10-28 Tarsus Medical Inc. Methods and devices for treating hallux valgus
US8277459B2 (en) 2009-09-25 2012-10-02 Tarsus Medical Inc. Methods and devices for treating a structural bone and joint deformity
US8652141B2 (en) 2010-01-21 2014-02-18 Tarsus Medical Inc. Methods and devices for treating hallux valgus
US8696719B2 (en) 2010-06-03 2014-04-15 Tarsus Medical Inc. Methods and devices for treating hallux valgus
JP5982699B1 (en) * 2016-04-22 2016-08-31 株式会社ステップ・ケイ・スリー Hallux angle measurement tool

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JPH11187907A (en) * 1997-12-26 1999-07-13 Reform Shop Akagi:Kk Foot measuring device, shoe measuring device, foot/shoe measuring device, measuring system, storage medium, and shoe
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