JPH05237145A - Footwear for correcting deformation of footprint at pollex valgus and its outfit - Google Patents

Abstract

PURPOSE:To remove the major cause for worsening deformation in a dynamic load state by diagonally providing cross axes in the heel part and front foot part of the footwear in order to direct the major axis of the foot at the time the heel touches the ground toward a progressing direction and to move the load center of the front foot part at the time the tiptoe parts from the ground toward the outer side. CONSTITUTION:A slope part 13 which is gradually thinner toward a front end side is formed on the tiptoe side of the front sole 12 of shoes 11. Further, a slope part 15 which is gradually thinner backward is formed on a heel 14. The inclination of the major axis of the foot in the progressing direction at the time the heel touches the ground is corrected to move the center of the load in the front hoot part toward the outer side when a user wears the shoes 11 and runs or walks. The moving line of the load is thus corrected to be aligned to the major axis of the foot by adjusting the inclination angles of the respective axes. As a result, the deformed pollex valgus is radically cured by a preservative method.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to footwear and an orthosis for correcting toe deformation in hallux valgus.

[0002]

2. Description of the Related Art Hallux valgus deformity caused by normal load walking except congenital and special inflammation and toe deformity as a sequela of trauma, that is, the toe of the foot is the metatarsophalangeal joint (MP).
Many studies have been made on the deformed hallux valgus that bends from the joint) to the outside of the foot and causes pain in the joint, and various treatment methods have been proposed. Regarding a conservative treatment method, for example, Japanese Utility Model Laid-Open No. 3-43819 proposes a seat bun for bunion correction that pulls the toe inward. Japanese Laid-Open Patent Publication No. 2-295504 discloses an MP of the toe of the insole mainly extending from the heel to the toes.
There has been proposed a shoe insole in which a through-hole is formed in a portion where the joint portion abuts to alleviate a concentrated load of the body weight. Also, Japanese Utility Model Laid-Open No. 82823/1990 proposes a bunion corrector having a corrector interposed between the thumb and the thumb. Furthermore, even if it is inside the MP joint (paddin
It is also well known that g) is provided for the purpose of analgesic and anti-inflammatory effect.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In Japanese Patent Laid-Open No. 19 and the like, since it is a so-called symptomatic treatment and cannot cope with the most important dynamic load change at the time of walking, it is possible to correct and hold it at rest, but the toes of the stance phase during walking are on the ground. When moving further away (when toe off)
In addition, it cannot bear the load concentrated on the forefoot, cannot maintain the corrective position, and loses even the preventive effect of the exacerbation of deformation unless the walking style is changed. In addition, the paddin
g is complementary and neither can have a satisfactory curative effect.

An object of the present invention is to provide a footwear and an orthosis for correcting toe deformation in hallux valgus, which is capable of eliminating a main factor of deformation deterioration under dynamic load condition by examining a mechanism of deformation deterioration from analysis of gait mode. And

[0005]

According to a first aspect of the present invention, there is provided a foot deformity correcting footwear for hallux valgus, wherein the foot long axis when the heel is in contact with the foot is directed in the traveling direction, and the load center of the forefoot when the toes are separated is outside. The horizontal axis is diagonally attached to the heel and forefoot of the footwear in order to move to.

According to a second embodiment of the orthosis for correcting valgus of the hallux valgus, in order to match the center of load movement of the sole of the foot, which tends to lean inward when walking, with the long axis of the foot, a horizontal axis oblique to the forefoot is provided. It is provided with a plantar splint that integrates the metatarsophalangeal joint of the big toe and the hind foot to prevent valgus deformation of the big toe.

The bunion correction device according to claim 3 uses a splint for fixing the metatarsophalangeal joint part of the toe in order to prevent valgus deformation of the toe, which recurs or worsens under load. , The front edge of the splint is formed along the horizontal axis that is tilted outward so that the load center moves outward when the tip of the toe matches the load movement centerline that tends to lean inward when walking However, by fixing the splint to the plantar part of the forefoot with a finger band for correcting the valgus valgus and a band for fixing the splint, the valgus deformity of the big toe is prevented due to the load load, and it is further deformed by walking. It is something to be corrected.

[0008]

As described above, the horizontal axis and the plantar splint are provided individually or in combination to correct the toe deformation in the hallux valgus.

[0009]

[Examples] A functional anatomical examination regarding hallux valgus will be described. In each drawing, when the nail is shown, the right foot is viewed from above, and when the nail is not shown, the right sole is shown.

By walking on two legs, humans
The amount of load on the sole increases compared to the quadruped. The load on each part of the foot is determined by the load amount and the ground contact area of each part that receives the load. Furthermore, they are influenced by the anatomical characteristics of the human foot and the gait style. During normal walking, the heel touches the ground, the foot touches the ground, and the mids stand.
stance), the tip of the toe stands (heel on), and the tip of the toe goes off (toe off). At this time, the pressure applied to the sole of the foot draws an arc from the heel to the outside as shown in FIG. 1 (A). It moves distally and reaches each proper toe while moving inward at the forefoot. At the time of toe off, the load on the metatarsal head becomes the center of the forefoot, and the line connecting the first and fifth metatarsal heads from the anatomical shape is taken as the base, as shown in FIG. 1 (B). 2 Triangular part (t
The load concentrates on oe off triangle 1). This triangle 1 is distal because of the horizontal axis and has a dorsal inclination, so
In the state of el on, it becomes parallel to the ground plane and becomes stable.
The pressure applied to the forefoot at the time of off is equalized. Furthermore, it has the advantage that the direction of travel can be instantly changed by using the inner and outer sides separately when kicking back, but conversely it is at the distal individual toes. On the other hand, there is also a drawback that when the toe is not kicked back in the longitudinal direction of the foot, an unstable pressure from the side is easily applied to the MP joint portion and the side is easily deformed.

The difference in the walking style causes a difference in the load and degree on each part of the foot, which is determined by the direction in which the foot faces, the ground contact position, and the traveling direction. That is, as shown in FIG. 2, in which direction the foot is oriented with respect to the traveling direction X and which part of the foot touches the ground determines which part the load is concentrated on. In addition, the load applied to the sole increases especially in the heel part of the heel strike stage and the metatarsal head of the toe off stage. Therefore, when the long axis Y of the foot is oriented in the traveling direction X during normal walking, the load movement center line 2 which is a line connecting the respective load centers at the heel part and metatarsal head level is as X ₁ in FIG. As shown in 2-1, it is considered that it passes through the apex of the second metatarsal head and the second toe, and is considered to be substantially parallel to the long axis Y of the foot. That is, at the time of toe off, the triangular area 1 begins to receive substantially equal pressure at the same time, and the pressure applied to the 1st to 5th metatarsal heads is determined by positioning the load center at the apex while balancing the inside and outside of the foot. It is expected that the center line of load movement, that is, the traveling direction is along the long axis Y of the foot.

Next, the examination of the functional anatomical factors of the toe deformation will be described. As shown in FIG. 3, when the long axis Y of the lower extremity is outwardly oriented with respect to the traveling direction as in the case of external rotation, the load during heel strike moves to the outside of the heel and the load during toe off is The load applied to the toe off triangular area 1 is not able to receive an equal pressure at the same time because the load is applied to the inside of the forefoot in order to move in the direction of travel, and it starts from the outer side that is more proximal and moves to the inner side, and finally reaches the maximum. The load concentrates from the toe MP joint to the inside of the toe. As a result, the load movement center line 2 is inclined inward with respect to the long axis Y of the foot. That is, it is considered that the load movement center line 2 always faces the traveling direction, and the disagreement between the long axis Y direction of the foot and the traveling direction X affects the load on the toe.

During the Toe off phase, the load biased to the MP joint of the toe is continuously concentrated in a small area inside the toe,
The toes are strongly abducted at the MP condyle joint,
Also, toe off in the forward direction with the axis inclined to the outer dislocation.
At the time of completing the, the toes are forced to rotate internally, resulting in the peculiar deformation of the hallux valgus. Toeo for the toe with internal deformation
When the ff is completed, the pressure applied to the toes is concentrated on the inside of the toe, so the deformation progresses further by walking. The hallux valgus that has undergone valgus deformation faces further outward with respect to the long axis of the foot, so even if the load movement center line is oriented in the long axis direction of the foot, the ball is tilted outward until it is parallel to the tilt angle of the big toe due to insufficient correction. Unless it is, the deformation of the toes cannot be prevented.

In the MP joint of the valgus valgus, relaxation of the supporting tissue inside the joint causes a tendency for lateral subluxation of the phalanx of the phalanx, and the pressure applied to the phalange by the load causes the pressure applied to the phalange outside of the first medullary head. The first metatarsal bone gradually undergoes adduction deformity in combination with the expansion of the first inter-toe space.

Heel off, toe in the latter half of the stance period
Excessive valgus of the foot when off causes the center of the load applied to the sole to move inward, and toe off is completed by the distal medial side of the triangular area 1 and the medial toe. The existence of a stride in walking causes a lateral sway of the center of gravity with respect to the traveling direction during the alternation of both lower limbs during the stance phase. This sway shows that the load movement during the stance phase by each load limb also goes inward and outward, and its amplitude correlates not only with the size of the stride but also with the degree of sway of the upper body.

The instability of the lower limbs due to lowering of muscle strength of the lower limbs increases the sway of the upper body, the load of the heel part in the first half of the stance phase leans outward, and the load in the latter half of the stance phase temporarily concentrates on the outer side of the forefoot. Off begins as an inward movement of the load center associated with the valgus of the foot. Following this inward movement, if the direction of travel is directed forward inward and toe off is completed on the inside of the toe, the direction of travel does not match the direction of the long axis Y of the foot, as in the external rotation walk described above. , It is similar to walking when the lower leg is rotating outward with respect to the traveling direction. However, completion of toe off in the long axis direction of the foot while maintaining the valgus of the foot by increasing the forward propulsive force from this time further strengthens the valgus load of the toe. That is, the load on the toes is affected by the degree of valgus of the forefoot even when the direction of travel and the long axis direction of the foot coincide.

The load on the toes during running is toe off
Can be said to be the same as when walking, but heel stri
There is always from ke to midstance and it is hee
Since it is in the lon state, the load is concentrated in a small area of the front foot. Toe off triangle field 1 in the forefoot
Since it also serves as a heel during walking, it is necessary to absorb the shock and adjust the balance of the body, and the load applied to the head of each metatarsal bone further increases.

The increase in the load on the toe during the direction change becomes more noticeable during running than during walking and at the start of a sudden dash in sports. With a slight direction change, it is not necessary to rotate the axial foot in the traveling direction, and even a rapid movement in the front direction in sports can be interpreted as an increase in stride with abrupt valgus of the forefoot. The valgus of the foot in this case is controlled by the inward movement of the knee and the load on the medial edge of the sole increases, but the valgus valgus stress during toe off is basically the same as during walking, It is interpreted as being determined by the direction of the long leg Y with respect to the traveling direction X and the inclination of the forefoot, that is, the degree of valgus.

However, when making a turn of 90 degrees or more,
The load applied to the toes differs depending on whether the forefoot has been properly oriented in the direction in which it progresses immediately before toe off. For that purpose, it is necessary to rotate the body from the heel to the toe as one body with the metatarsal bone head as a fulcrum as the body rotates in the traveling direction. However, in agile movements, when the direction is changed by 90 degrees or more, the rotation of the foot lags behind the rotation of the body, and therefore it is not completed immediately before toeoff.
At the same time as turning off, it is necessary to rotate the foot. At this time, the proper toe is required to contact the ground and complete the last kick-back, so that it is delayed from the rotation of the heel, so that a strong twist occurs in the MP joint of the big toe, and the big toe is valgus. This also appears violently in feint motions that require more rapid and complex changes even with slight direction changes. in this case,
Without turning the entire foot in the direction of travel, the toe is used as a fulcrum to make the direction of travel unreadable.
It is often adjusted by abrupt varus / valgus of the foot in off triangle area 1. At this time, the valgus valgus of the forefoot, which is controlled by the lateral movement of the knee as described above, is defined as the inclination of the load movement center line 2. It is conceivable that if the knee is controlled by abrupt internal and external rotation, the toe o associated with knee extension
At the time of ff, the heel part rapidly turns to turn the foot in the direction of travel. The rotation of the heel acts as a twist on the toe that has already started toe off, resulting in abrupt valgus stress at the MP joint.

As described above, the rotation of the hind foot portion is added at the same time as the toe off, and a sudden foot valgus such that only the hind foot portion is rotated in a traveling direction different from the direction of the forefoot portion with the MP joint as a boundary is twist stress. This causes the most extreme deformation of the toes.

Next, the examination of the improvement method from the viewpoint of the deterioration of deformation will be described. In order to prevent the deformation of the toes due to the load, it is desirable to take a more physiological and comfortable walking and running style. Further, when considering correction of deformation, it is necessary to consider improvement based on the above-mentioned walking theory. Therefore, when considering a method for correcting and preventing valgus deformity, it is first necessary to maintain the corrective position in a stationary state, but the corrective position obtained in dynamic states such as normal walking and running is It would be ideal if it could be maintained and prevent recurrence, and if it could be automatically corrected by a physiological and natural method using the load from walking and running.

Examining the improvement method for each cause of deformation, when there is a disagreement in the longitudinal direction of the foot with respect to the advancing direction, the advancing direction coincides with the longitudinal axis of the foot, but the forefoot valgus at the time of toe off is excessive. The case is divided into the case where there is a discordance of rotation between the front foot part and the hind foot part when the direction is changed, and the case where there is internal rotation deformation of the toe. These will be described below.

When there is a disagreement in the direction of the long axis of the foot with respect to the traveling direction ... From heel strike to toe of
It is necessary to rotate the load movement center line up to f in a direction coinciding with the long axis of the foot. For that purpose, it is necessary to move the sole load with a certain direction, and as shown in Fig. 4, two horizontal shafts 3 parallel to the sole like the two teeth of the geta are provided, one of which is the heel. Located in the ankle part to stabilize the heel strike and to set a certain direction for the load movement and to direct the long axis of the foot in the direction of advance, the other is the lateral axis 3A, the other is located in the forefoot part and acts as the metatarsal horizontal axis, the heel part It is the level of the second mid-pelvic head distal to the horizontal axis 3A, that is, the horizontal axis 3B located at the apex of the toe off triangle, and the kickback direction at the time of toe off is made constant, and the load transfer center line 2 The problem is solved by adjusting the load applied to the toe of the foot so that it coincides with the long axis of the foot. Further, when the valgus deformity of the toe is further advanced and correction is required, the distal lateral axis 3B is set to the second metatarsal bone using the inclination angle of the toe with respect to the long leg Y as a guide as shown in FIG. It is considered possible to adjust the degree of correction by tilting the head part outward and setting it. Further, as shown in FIG. 6, by similarly inclining only the lateral axis 3A of the heel part to the outside, it is possible to adjust so that the long axis of the foot is forcibly oriented in the traveling direction at the time of heel strike. In addition, when the valgus of the toe is strong, the inclination angle with respect to the long axis Y of the foot is large. Therefore, when the correction angle is excessively large only with the metatarsal horizontal axis 3B, as shown in FIG. Similarly, by tilting it outwardly and making it parallel to the horizontal axis 3B of the metatarsal bone, the external rotation of the lower leg during heel strike is reduced, and by tilting the long axis of the foot inward with respect to the direction of travel, the correction angle at the forefoot is increased. Can be reduced to 1/2. That is, actually, the two horizontal axes 3A, 3B
Therefore, it is possible to distribute the required correction angle to each.

Although the traveling direction and the long axis direction of the foot are coincident with each other, t
Excessive forefoot valgus when oe off
It is necessary to devise to prevent excessive valgus of the forefoot during ff.
For this purpose, as shown in FIG. 8, a 4 (padding) is provided on the sole that corresponds to the first metatarsal bone head and lifted to the dorsal side to maintain a valgus position, and the toe off triangular area 1 is set. This can be solved by inclining to the outside and moving the load at the time of toe off to the outside. When there is a discrepancy in the rotation of the forefoot and hindfoot during the direction change, in order to prevent twisting of the MP joint of the toe, as shown in FIG. A plantar splint 5 (splint) that can integrate toe movements is installed. Furthermore, in order to facilitate the rotation of the integrated foot, the rotation tenon P that matches the bottom side of the joint of the toe of the splint MP
It is solved by installing iv (pivot).

When there is inward rotation of the big toe, the load applied to the apex of the big toe when the toe off is completed is located inside the long axis of the big toe, which causes the valgus deformity of the big toe to worsen. Becomes Therefore, as shown in FIG. 10, by forming a slope member 6 that is high inward and low outwardly on the bottom of the foot that corresponds to the apex of the big toe, the pressure applied to the apex of the big toe when the toe off is completed is used. Then, the inner rotation deformation can be solved by promoting the outer rotation of the toes. Further, since the ground contact part moves outward due to the external rotation of the toes, the effect of correcting the valgus of the toes can be expected due to the component force of the pressure applied to the toes.

Next, consideration will be given to the prevention of hallux valgus and examination of orthoses. When considering prevention of valgus deformity, the removal of the above-mentioned functional anatomical exacerbation factors must be considered. When considering an ideal automatic correction method, it is necessary to use a combination of functional anatomical improvement methods in addition to maintaining the correction position in a static state.

11 and 12 show a first embodiment of the present invention, which uses an improvement method in the case where there is a discrepancy in the longitudinal direction of the foot with respect to the traveling direction.

A toe side of the outsole 12 of the shoe 11 is formed with a slope portion 13 which is gradually thinned toward the tip end side in correspondence with the horizontal axis 3B, and a heel 14 is gradually moved rearward in correspondence with the horizontal axis 3A. A thin slope portion 15 is formed. Therefore, when walking or running while wearing the shoes 11, the horizontal axis 3A
Correct the inclination of the long axis of the foot with respect to the traveling direction at the time of heel contact with the ground, and move the center of the load at the forefoot to the outside in accordance with the horizontal axis 3B, so that the load movement line It can be corrected by adjusting the tilt angle of each axis so that it coincides with the Y direction of the axis. As for the forefoot lateral axis 3B, if the thickness of the shoe sole is small, it is difficult to form the slope portion, and therefore a metallic lateral axis is installed instead.

FIGS. 13 and 14 show a second embodiment of the present invention. In addition to the above case, the front foot part and the rear foot part when the forefoot valgus is excessive when the toe is off and when the direction is changed. This is a splint orthosis that is used in combination with the improvement method when there is a discrepancy in rotation, and is laid on the inner sole of a shoe with a relatively soft sole.

The tip of the brace reaches the distal (anterior) of the MP joint of the toe, and thereby the proximal (posterior) of the fifth metatarsal head.
Has a distal side 3b corresponding to a horizontal axis 3B that is obliquely directed toward, and fixes the toe MP joint and the hind foot integrally, and does not completely limit the movement of the toe MP joint toe off the mother. The load is prevented from being concentrated on the toes and the load on the toes in the valgus direction is prevented. In this case, the set part of the forefoot horizontal axis 3B passes behind the apex of the toe off triangle 1 and the MP joint of the toe is included in the splint but the M of the 2nd to 5th toe.
The P joint is made by curving the distal side 3b backward so as to be outside the splint. This makes the toe M when toe off
The P joint is lifted up by the thickness of the splint, and excessive valgus of the forefoot can be prevented.

FIG. 15 to FIG. 17 show a third embodiment, which is inclined so as to correspond to the horizontal axis 3B, and the inner side is M of the toe.
A plantar splint 21 (spli) formed by curving the front edge so that the MP joints of the 2nd to 5th toes reach the distal end of the P joint and are outside the splint.
nt) is a finger band 22A for correcting the valgus toe
The fixing band 22 having the above can be attached to the sole of the forefoot. The foot splint 21 is made of a material such as metal or hard resin, and the fixing band 22 made of cloth for attaching to the foot is a velvet fastener 22B.
, 22C and velvet fasteners 22D and 22E, and the like.
The sole splint 21 is integrated by, for example, being stored in a bag portion 21P provided on the fixing band 22. Therefore, the hallux valgus can be corrected by the finger band 22A, and the valgus can be prevented by the effect of reaching the distal to the proximal side of the MP joint of the toe by the plantar splint 21 and fixing the MP joint. Further, the effect can be obtained by the inclination 3B of the distal side of the plantar splint 21, and the second to fifth metatarsal bone head portions can be formed by the plantar splint.
By adjusting the thickness of the plantar splint 21 outside, the first phalangeal portion is lifted by the thickness, so that an effect of preventing excessive eversion of the forefoot can be obtained.

FIGS. 18 to 21 show a fourth embodiment. In the third embodiment, a foot sole splint 21 (splint) formed so as to incline so as to correspond to the horizontal axis 3B is provided with a toe point. The body 31 formed additionally is designed to be attached to the foot by the fixing band 32, but the orthosis body 31 is made of a material such as a relatively soft resin such as foamed resin because it reaches the apex of the toes. In order to facilitate walking, it is possible to deform the toe MP joint part except for the splint effect as in the third embodiment. Indentations 33A and 33B are provided in the parts corresponding to the first metacarpal head and the toe abdomen of the big toe to improve the fit to the sole of the foot, and the proximal parts of the second and third metatarsal heads have lateral A raised portion 37 is provided for holding the shaft rod. A fixing band 32 for attaching the brace main body 31 to the foot can be fixed by a mounting bracket 34 or the like provided at the end thereof. Further, a fixing band 35 is provided at the toe point where the toes are inserted. The outer bottom surface of the toe portion of the appliance main body 31 is provided with a thin portion 36 that gradually inclines outward and becomes thinner. This makes t
When the oe off is completed, the toes are urged to rotate outwardly, and the ground contact portion moves outward, so that valgus can be prevented.

The present invention is not limited to the above-mentioned embodiments, and various modifications such as a combination of the above-mentioned embodiments may be made.

[0034]

According to the first aspect of the present invention, the valgus deformed toe is bent by bending the bottom of the shoe through the horizontal axis obliquely provided on the bottom of the footwear so that the load movement line coincides with the long axis direction of the foot. Can be cured by a conservative method.

According to the second aspect of the present invention, the sole is bent through the lateral axis obliquely provided on the plantar splint so that the load movement line coincides with the long axis direction of the foot, and the splint further extends outside the toe. It is possible to prevent valgus and to cure valgus deformity by a conservative method.

According to a third aspect of the present invention, in the toe deformity correction orthosis, a toe fixing finger band is provided on a plantar splint formed along a horizontal axis having its tip inclined, and the toe is fixed by the splint. It is possible to obtain a curative effect by a conservative method by preventing the valgus of the toe and correcting the valgus of the toe by using the thickness and the horizontal axis of the first metatarsal region of the splint.

[Brief description of drawings]

FIG. 1A is an explanatory diagram of the movement of pressure applied to the sole of the foot,
(B) is an explanatory view showing a triangular area.

FIG. 2 is an explanatory diagram showing an inclination of a load movement center line with a change in a traveling direction.

FIG. 3 is an explanatory diagram showing a traveling direction and a tilt of a long axis of a foot.

FIG. 4 is an explanatory diagram showing parallel horizontal axes.

FIG. 5 is an explanatory view showing a horizontal axis on the toe side which is obliquely provided.

FIG. 6 is an explanatory view showing a lateral axis of the heel side that is obliquely installed.

FIG. 7 is an explanatory view showing the horizontal axes of the toe side and the heel side that are obliquely provided.

FIG. 8 is an explanatory diagram showing an object.

FIG. 9A is an explanatory view showing a plantar splint, and FIG. 9B is an explanatory view showing a positional relationship between installation of the plantar splint and bones / joints as seen from the back of the foot.

FIG. 10 is an explanatory diagram showing a slope member.

FIG. 11 is a perspective view showing a first embodiment of the present invention.

FIG. 12 is a bottom view showing the first embodiment of the present invention.

FIG. 13A is a bottom view showing a second embodiment of the present invention,
(B) is a perspective view showing a second embodiment.

FIG. 14 is a second embodiment of the present invention viewed from the back of the foot and bones of the foot.
It is an explanatory view showing a joint.

FIG. 15 is a plan view showing a third embodiment of the present invention.

FIG. 16 is a bottom view showing the third embodiment of the present invention.

FIG. 17 (A) is a plan view of an orthosis showing a third embodiment of the present invention, and (B) is a plan view of a plantar splint of the orthosis showing the third embodiment of the present invention.

FIG. 18 is a perspective view showing a fourth embodiment of the present invention.

FIG. 19 is a perspective view showing a fourth embodiment of the present invention.

FIG. 20 is a plan view showing a fourth embodiment of the present invention.

FIG. 21 is a bottom view of essential parts showing a fourth embodiment of the present invention.

[Explanation of symbols]

 3B Horizontal axis 11 Shoes 21 Sole splint 22 32 Fixed band 22A Finger band Y Foot long axis

[Procedure amendment]

[Submission date] June 2, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 1

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction content]

By walking on two legs, humans
The amount of load on the sole increases compared to the quadruped. The load on each part of the foot is determined by the load amount and the ground contact area of each part that receives the load. Furthermore, they are influenced by the anatomical characteristics of the human foot and the gait style. During normal walking, the heel touches the ground, the foot touches the ground, and the mids stand.
stance), the tip of the toe stands (heel on), and the tip of the toe goes off (toe off). At this time, the pressure applied to the sole of the foot draws an arc from the heel to the outside as shown in FIG. 1 (A). It moves distally and reaches each proper toe while moving inward at the forefoot. At the time of toe off, the load on the metatarsal head becomes the center of the forefoot, and the line connecting the first and fifth metatarsal heads from the anatomical shape is taken as the base, as shown in FIG. 1 (B). 2 Triangular part (t
The load concentrates on oe off triangle 1). H Since the triangular field 1 has a tilt to the back side distally by the horizontal axis leg Kyuryu
In the state of eel on, it becomes parallel to the ground plane and becomes stable.
The pressure applied to the forefoot at the time of e-off is equalized, and it has the advantage that it is easy to change the direction of travel instantaneously by using the inner and outer sides properly when kicking back. There is also a drawback in that when the toe is not kicked back in the longitudinal direction of the foot during toe off, unstable pressure from the side is easily applied to the MP joint portion and side deformation is likely to occur.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0023

[Correction method] Change

[Correction content]

When there is a disagreement in the direction of the long axis of the foot with respect to the traveling direction ... From heel strike to toe of
It is necessary to rotate the load movement center line up to f in a direction coinciding with the long axis of the foot. For that purpose, it is necessary to move the sole load with a certain direction, and as shown in Fig. 4, two horizontal shafts 3 parallel to the sole like the two teeth of the geta are provided, one of which is the heel. Is located in the ankle part to stabilize the heel strike and to set a certain directionality for load movement, and to set the long axis of the foot to the more advanced direction, the other is the horizontal axis 3A, and the other is located in the forefoot and functions as the horizontal axis of the metatarsal, Second distal parallel to the transverse axis 3A
The mid-bone bone level, that is, the horizontal axis 3B located at the apex of the toe off triangle, the kickback direction at the time of toe off is made constant, the load movement center line 2 is aligned with the long axis of the foot, and the toe The problem is solved by methods such as adjusting the load on the. Further, when the valgus deformity of the toe is further advanced and correction is required, the distal lateral axis 3B is set to the second metatarsal bone using the inclination angle of the toe with respect to the long leg Y as a guide as shown in FIG. It is considered possible to adjust the degree of correction by tilting the head part outward and setting it. Further, as shown in FIG. 6, only the lateral axis 3A of the heel portion is similarly tilted to the outside so that the heel strike is performed.
Sometimes it is possible to adjust the long axis of the foot so that it is forced to point in the direction of travel. Also, when the valgus of the toe is strong, the angle of inclination with respect to the long axis Y of the foot is large, so that the metatarsal horizontal axis 3B
If the correction angle becomes excessively large only by tilting, the lateral axis 3A of the heel part is also tilted outward as shown in FIG. 7 to be parallel to the horizontal axis 3B of the metatarsal bone, so that the external rotation of the lower leg during the heel strike is performed. By reducing the angle and inclining the long axis of the foot inward with respect to the traveling direction, the correction angle at the forefoot can be reduced to 1/2. That is, actually, the two horizontal axes 3A, 3
By B, it is possible to distribute the required correction angle to each.

[Procedure amendment 4]

[Document name to be amended] Statement

[Name of item to be corrected] 0032

[Correction method] Change

[Correction content]

FIGS. 18 to 21 show a fourth embodiment. In the third embodiment, a foot sole splint 21 (splint) formed so as to incline so as to correspond to the horizontal axis 3B is provided with a toe point. The body 31 formed additionally is designed to be attached to the foot by the fixing band 32, but the orthosis body 31 is made of a material such as a relatively soft resin such as foamed resin because it reaches the apex of the toes. In order to facilitate walking, it is possible to deform the toe MP joint part except for the splint effect as in the third embodiment. Indentations 33A and 33B are provided in the parts corresponding to the first metacarpal head and the toe abdomen of the big toe to improve the fit to the sole of the foot, and the proximal parts of the second and third metatarsal heads have lateral sides. It ridges 37 for keeping the shaft foot Kyuryu is provided. A fixing band 32 for attaching the brace main body 31 to the foot can be fixed by a mounting bracket 34 or the like provided at the end thereof. Further, a fixing band 35 is provided at the toe point where the toes are inserted. The outer bottom surface of the toe portion of the appliance main body 31 is provided with a thin portion 36 that gradually inclines outward and becomes thinner. This makes t
When the oe off is completed, the toes are urged to rotate outwardly, and the ground contact portion moves outward, so that valgus can be prevented.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Name of item to be corrected] Fig. 14

[Correction method] Change

[Correction content]

FIG. 14 is a second embodiment of the present invention viewed from the back of the foot and bones of the foot.
It is explanatory drawing which shows the positional relationship with a joint.

[Procedure correction 6]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 11

[Correction method] Change

[Correction content]

FIG. 11

[Procedure Amendment 7]

[Document name to be corrected] Drawing

[Correction target item name] Figure 12

[Correction method] Change

[Correction content]

[Fig. 12]

Claims (3)

[Claims] 1. A lateral shaft tilted outward is installed on the heel part and the forefoot part of the footwear, the long axis of the foot is directed in the traveling direction when the heel touches the ground, and the load center of the forefoot part is moved outward when the toes are separated, Footwear for toe deformation correction on the center line of load movement that tends to inward and valgus toe to be corrected. 2. Similar to the first aspect, by installing a lateral shaft tilted outward on the forefoot, the center line of load movement that tends to tilt inward is aligned with the long axis of the foot, and the tip is in the middle of the toe. By reaching the distal part of the toe joint and fixing the middle toe joint part of the toe as a splint, it prevents the inconsistency of rotation between the toe and the hind foot, and among the other 2nd to 5th toes. By forming the curved front edge along the lateral axis of the forefoot so that the toe phalange joint is outside the splint, the toe side is lifted by the thickness of the splint brace and the forefoot is excessive when the toes are separated. An insole orthosis for hallux valgus which is characterized by preventing valgus. 3. An orthosis for correcting a toe deformity, wherein a plantar splint having a front edge formed along a horizontal axis obliquely provided on the forefoot is a fixing band having a finger band for correcting the toe of the forefoot. By fixing it to the sole of the foot, correct the toe with a finger band, and fix the metatarsophalangeal joint of the toe with a splint to prevent the inconsistency of rotation between the toe and the hind foot. By exposing the metatarsophalangeal joint of the toe to the outside of the splint, the thickness of the plantar splint is raised on the side of the denominator to prevent excessive valgus of the forefoot when the toes are separated, and it is further installed on the forefoot. The foot axis in the hallux valgus can prevent recurrence and exacerbation of deformation due to load load and correct the deformation by walking by aligning the center line of sole load movement during walking with the horizontal axis with the long axis of the foot. An orthosis for correcting toe deformation.