JP2009279399A - Device for correcting pollex valgus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for correcting pollex valgus by which pollex valgus is effectively corrected without giving pains and mismatch feeling to a wearer. <P>SOLUTION: The pollex valgus orthopedic device (10) includes a knit fabric for covering the foot and the ankle (50), and a press member (40) for pressing the pollex abductor muscle. The knit fabric comprises: a shape keeping knit fabric part comprising low flexibility fabric forming an instep part (20); and a flexible knit fabric part comprising a high flexibility knit fabric forming an ankle part (23), heel part (25), sole part (30) and a socks part (27). The press member (40) is housed in a bag part (45) provided on the inner surface side of the shape keeping knit fabric part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a device for correcting hallux valgus that is effective in correcting hallux valgus and preventing falls caused by hallux valgus.

  Hallux valgus was said to occur frequently in women who wear high heels and the like that exert a strong pressure on the toes. However, with the advent of an aging society, a large number of elderly patients with hallux valgus are seen regardless of gender, and prevention and treatment of hallux valgus is becoming socially important. A characteristic case of hallux valgus is that it is away from the direction of the central axis of the body. Regarding this phenomenon, when looking at the internal skeleton, hallux valgus, thickening of the head of the first metatarsal bone, lateral metastasis of the seed bone, or varus of the first metatarsal, Examples include an increase in the first metatarsal head, an abnormality in the tarsal joint of the first metatarsal, an abnormality in the ankle abductor and adductor muscles, a length of the first metatarsal bone, or a relaxation of the ligament.

  Focusing on the factors that cause such hallux valgus, various hallux valgus correction tools have been proposed. For example, in Patent Document 1, a sock for correcting hallux valgus is configured such that a part that abuts on the middle foot joint part of the foot and the base part of the fifth metatarsal is made of a member that is more elastic than the other part. And a bag part for inserting the little finger is formed on both sides of the toe, and the thumb and little finger are expanded outward by the force of pressing the metatarsal joint part and the fifth metatarsal base, and a lateral arch is formed on the sole of the foot There has been proposed a foot balance correction sock that can be regenerated to balance the entire sole.

  In Patent Document 2, a pad between fingers between the thumb and the second finger and between the fourth finger and the fifth finger, a pad that comes into contact with the metatarsal joint, and the fifth metatarsal base on the little finger side, etc. A cushioning material is provided on the arch of the sole, and covers the fulcrum of the toe ball and the action point which is the base of the fifth metatarsal, In addition, a hallux valgus and club valgus correction supporter that presses the base of the fifth metatarsal inward has been proposed.

  In Patent Document 3, when a sock is attached to a foot, a portion that comes into contact with the base of the metatarsal joint of the thumb with the hallux valgus protruding and a portion that comes into contact with the base of the fifth metatarsal are more elastic than the other parts. A press member or a reinforcing member is formed on the base part of the thumb and the fifth metatarsal base that the valgus valgus protrudes to correct the torsion of the entire sole. Twisting socks have been proposed.

  Patent Document 4 includes a joint part mounting part that covers the entire first middle toe joint part of the toe and is mounted around the sole and instep, a toe mounting part that is mounted around the toe, A supporter for correcting hallux valgus has been proposed which comprises a connecting belt which is attached by connecting the second heel side of the main heel attachment portion and the first heel side of the joint portion attachment portion obliquely and applies a tensile force between them. . In order to correct the hallux valgus and return the hallux and the first metatarsal bone to the correct positions in the specification, simply apply a varus external force to the heel and apply the hallux valgus to the first metatarsal bone. It is necessary to apply not only an external force but also an external force to correct this twist at the same time, but it is described that none of the conventional examples paid attention to the twist in hallux valgus.

  In Patent Document 5, the foot contact part corresponding to the metatarsal ligament and the part contacting the both sides thereof are made of a highly elastic high elastic material, and the part contacting the foot surface part corresponding to the metatarsal ligament is described above. There has been proposed a sock with a correction function that is made of a low elastic material having a lower elasticity than an elastic material and is tightened from both sides when worn, thereby correcting the metatarsal ligament in a lateral arch-like reproduction direction.

Japanese Patent Laid-Open No. 2001-262405 JP 2007-167180 A JP 2000-328304 A JP 11-76283 A JP 2005-42213 A

  As shown in Patent Documents 1 to 4, the conventional hallux valgus correction tool focuses on the symptoms of the hallux valgus patient and corrects the hallux valgus by pressing the fifth metatarsal base from the metatarsal joint. There are many correction tools. On the other hand, in the correction of hallux valgus, like a hallux valgus correction supporter shown in Patent Document 4, a hallux valgus correction tool in which a twisting force is further applied to the hallux, or a sock with a correction function shown in Patent Document 5 Thus, there are few examples of the device for correcting hallux valgus in which correction force is applied to the metatarsal ligament. In particular, a device for correcting hallux valgus that focuses on strengthening the ankle abductor is not found.

  In the correction of hallux valgus, attention should be paid not only to symptoms but also to its factors. In the conventional device for correcting hallux valgus as shown in Patent Documents 1 to 5, it is considered that correction of hallux valgus of an elderly person due to the decline of the hallux abductor in particular is not easy.

  In view of such conventional problems, the present invention can effectively correct the hallux valgus without causing pain or a feeling of trouble to the wearer, and is effective for correcting the hallux valgus of the elderly. The purpose is to provide a correction tool.

  The present inventors have noted that the number of elderly patients with hallux valgus is increasing, and obtained knowledge that the correction of hallux valgus is effective if local and concentrated compression of the hallux abductor is effective. Thus, the present invention has been completed.

  The device for correcting hallux valgus according to the present invention is a device for correcting hallux valgus having a knitted fabric that circulates around the foot and a compression member that presses the abductor abductor muscle, and the knitted fabric has low stretchability that covers the instep A shape-retaining knitted fabric portion and a stretchable knitted fabric portion comprising a highly stretchable knitting forming the sole, and the compression member is a bag provided on the inner surface side of the shape-retaining knitted fabric portion It is housed in the part.

  Further, the hallux valgus correction tool according to the present invention is a hallux valgus correction tool having a knitted fabric that covers the feet and ankles, and a compression member that presses the ankle abductor, wherein the knitted fabric covers the instep. A shape-retaining knitted fabric portion made of a low stretch knitted fabric, and an elastic knitted fabric portion made of a highly stretchable knitted fabric covering the ankle portion, the heel portion, the sole portion, and the socks, It is housed in a bag portion provided on the inner surface side of the shape holding knitted fabric portion.

  In the above invention, the bag portion is preferably made of a highly stretchable knitted fabric.

  The compression member is preferably made of fibers having an official moisture content of 4.5% or less, and preferably has a cylindrical shape.

  The shape-retaining knitted fabric portion is preferably knitted by tack knitting, and the stretchable knitted fabric portion is preferably knitted by saddle knitting.

  The socks may have a bifurcated shape having a toe bag portion that accommodates the first toe and a large bag portion that accommodates the second to fifth toes.

  The device for correcting hallux valgus according to the present invention can correct the hallux valgus effectively without giving the wearer a feeling of pain or trouble even when worn for a long period of time. In addition, since it is possible to help strengthen the ankle abductor muscles of the elderly and the like, the balance of the body at the time of walking becomes difficult to lose, and the risk of falls can be reduced and the knee joint can be prevented from being damaged.

It is explanatory drawing which shows the structure of the hallux valgus correction tool which concerns on this invention. It is sectional drawing which shows the AA cross section of FIG. It is sectional drawing which shows the BB cross section of FIG. It is explanatory drawing of another Example. It is a graph which shows the wearing effect test result of invention. It is a graph which shows the long-term wearing effect test result of invention. It is a graph which shows the other long-term wearing effect test result of invention.

  EMBODIMENT OF THE INVENTION Below, the form for inventing is demonstrated based on drawing. FIG. 1 is an explanatory view showing a configuration of an embodiment of a device for correcting hallux valgus according to the present invention. 2 is a cross-sectional view showing the AA cross section of FIG. 1, and FIG. 3 is a cross-sectional view showing the BB cross section of FIG. As shown in FIG. 1, the device for correcting hallux valgus is composed of a knitted fabric covering a foot and an ankle 50. The knitted fabric includes an instep part 20, an ankle part 23, a heel part 25, a sole part 30, and a socks part 27. Made of knitted fabric. And as shown in FIG. 2, the bag part 45 is provided in the inner surface side of this knitted fabric, and the compression member 40 is accommodated in the inside.

  As shown in FIGS. 1 and 2, the instep portion 20 of the knitted fabric also covers the side surface portion of the knitted fabric, and is made of a low-stretch knitted fabric. The instep portion 20 can be knitted by, for example, tack knitting. The instep portion 20 is composed of a low stretch knitted fabric, and its shape hardly changes, and thus functions as a shape-retaining knitted fabric portion. In addition, in FIG. 1, the part shown by mesh shape is knitted by tuck knitting.

  On the other hand, the ankle part 23, the heel part 25, the sole part 30, and the socks part 27 are made of a highly elastic knitted fabric, and can be knitted by, for example, a highly elastic knitting. Since the ankle part 23, the heel part 25, the sole part 30, and the socks part 27 are made of a highly stretchable knitted fabric, they easily stretch and function as stretchable knitted fabric parts. In addition, in FIG. 1, the part shown with an oblique line is the part knitted by the braid.

  The degree of expansion / contraction of the shape retaining knitted fabric portion of the instep portion 20 and the elastic knitted fabric portion of the sole portion 30 is determined as follows. That is, the degree of expansion and contraction is determined by the instep portion 20 and the sole portion 30 so that a predetermined pressing force can be applied in the cross-sectional direction of the foot of the person wearing the hallux valgus correction tool. The degree of expansion and contraction of the stretch knitted fabric parts of the ankle part 23, the heel part 25, and the tabi part 27 can be easily worn by the person wearing the hallux valgus correction tool and continuously worn. It is decided not to give any discomfort. As shown in FIG. 1, the ankle portion 23 can be appropriately provided with heel knitting portions 23 a and 23 b and a tack knitting portion 23 c so that the device for correcting hallux valgus is not slipped off the ankle.

  Further, the degree of expansion / contraction of the low-elasticity knitted fabric can be 30 to 100% in terms of elongation, and the degree of expansion / contraction of the highly elastic knitted fabric can be 80 to 200% in terms of elongation. The elongation rate of the highly stretchable knitted fabric can be 1.0 to 3.0 times, and preferably 1.5 to 2.5 times that of the low stretch fabric.

  In the present invention, as shown in FIG. 1, a buffer portion 29 made of a triangular, highly stretchable knitted fabric can be provided. This buffer part 29 is provided between the instep part 20 and the tabi part 27, and extends straight from the second toe base part to the fifth toe base part and from the second toe base part to the outer side height It has a triangular shape composed of straight lines that run toward the part. Due to the high stretch knitted fabric of the buffer portion 29 and the low stretch knitted fabric of the instep portion 20 extending from the base portion of the toe portion to the instep portion of the foot, a force that lifts the toe upward inwardly acts. The hallux valgus can be effectively corrected. And the effect | action which raises this main shaft diagonally inwardly exhibits an effect also in fall prevention.

  As shown in FIG. 1, the tabi portion 27 has a bifurcated shape having a main bag portion 27 a for accommodating the first toes and a large bag portion 27 b for accommodating the second to fifth toes. Good. Thereby, the force which lifts the main body diagonally upward can be made to act on the main body effectively.

  A bag portion 45 is provided on the inner surface side of the knitted fabric configured as described above, as shown in FIG. The bag portion 45 is preferably knitted from a highly stretchable knitted fabric and thin. Thereby, the compression member 40 described below can be easily accommodated, and the compression member 40 can be easily held in a predetermined position.

  As shown in FIG. 1, the bag portion 45 is located on the inner surface side of the shape-holding knitted fabric portion, and is provided at a position that is just in contact with the muscle abdomen of the ankle abductor. Further, the longitudinal direction of the compression member 40 is provided in a direction from the sole to the instep. As a result, the muscle abdomen of the ankle abductor can be reliably pressed. The position of the bag portion 45 is preferably provided so that the compression member 40 can press the central part of the ankle abductor or the muscle belly from the rib in the horizontal direction.

  The compression member 40 is preferably a member that can compress the muscle abdomen of the ankle abductor locally and intensively. For example, as shown in FIG. 3, the shape of the cross section of the compression member 40 can be a circular shape of 5 to 10 mm. The length of the compression member 40 can be 5-30 mm. Generally about 20mm is good.

  Further, the compression member 40 compresses the muscle abdomen at a predetermined position of the ankle abductor for a long time, so that it does not cause discomfort to the person wearing the device for correcting hallux valgus. preferable. For example, the compression member 40 is preferably made of a fiber having an official moisture content (JIS L0105) of 4.5% or less. This is because when the compression member 40 absorbs moisture, the compression member 40 becomes hard and uncomfortable for a person wearing the device for correcting hallux valgus. Moreover, it is possible to prevent bacteria such as mold from propagating on the compression member 40.

  In consideration of the shape, official moisture content, hardness, etc., the compression member 40 is preferable, specifically, a cloth knitted from polyethylene, polypropylene, polyurethane, polyvinyl chloride, polyester, nylon, etc. Can be used. Among them, as the compression member 40, a cloth knitted with polypropylene and polyvinyl chloride fibers is preferably rolled into a cylindrical shape. For example, a cloth knitted with polyvinyl chloride fibers is rolled to have a diameter of 9 mm and a length. It can be 24mm, and it can be compressed to a thickness of 3mm with a weight of 500 grams.

  This completes the description of the hallux valgus correction tool. As shown in FIG. 1, the device for correcting hallux valgus can also be used as a sock, and can spend daily life in the same manner as a normal person with the device for correcting hallux valgus. The root part and the instep part 20 of the first toe of the device for correcting hallux valgus consist of a shape-retaining knitted fabric part, and the tabi part 27, the buffer part 29 and the sole part 30 consist of an elastic knitted fabric part, The toes are accommodated in the toe bag portion 27a, and the second to fifth toes are accommodated in the large bag portion 27b, and are held in a separated state. As a result, a person wearing the device for correcting hallux valgus is able to effectively correct the hallux valgus by receiving an action of a force that lifts the hallux upward inwardly in normal daily life.

  Further, the device for correcting hallux valgus can also be used as a sock, and can be always worn without causing pain to the wearer. The compression member 40 is held by the shape-holding knitted fabric portion, and can always apply a pressing force to the foot cross-sectional portion by the cooperation of the shape-holding knitted fabric portion and the stretchable knitted fabric portion. As a result, the compression member 40 housed on the inner surface side of the shape-holding knitted fabric portion is held at a predetermined position, and the muscle abdomen of the ankle abductor is locally, intensively and continuously compressed by the compression member 40. Therefore, a person wearing the device for correcting hallux valgus can enjoy the hallux valgus correction effect by strengthening the hallux abductor muscle.

  The embodiment of the sock mold has been described as the device for correcting hallux valgus according to the present invention, but the present invention is not limited to the above embodiment. For example, the device for correcting hallux valgus shown in FIG. 4 may be used. This device for correcting hallux valgus can be used easily and can be manufactured at low cost.

  The hallux valgus correction tool shown in FIG. 4 is composed of a knitted fabric that goes around the foot and a compression member. That is, in the device for correcting hallux valgus according to the present example, the knitted fabric that circulates the foot is composed of a low stretch knitted fabric that forms the instep portion 20 and a high stretch knitted fabric that forms the sole portion 30. As in the device for correcting hallux valgus shown in FIG. 2, the compression member 40 can compress the muscle abdominal muscle of the abductor abductor. In the device for correcting hallux valgus in this example, the instep part 20 is knitted by tack knitting to have a function of a shape retaining knitted fabric part, and the sole part 30 is knitted by knitting to function as a stretchable knitted fabric part. Have. Moreover, the AA cross section of FIG. 4 is the same as that of FIG.

  In addition, in the device for correcting hallux valgus of this example, in order to improve the retention of the device for correcting hallux valgus on the foot, as shown in FIG. It is possible to provide elastic portions 21a and 21b made of a knitted fabric.

  An effect confirmation test was conducted when the device for correcting hallux valgus (invention) shown in FIG. 1 was mounted. The effect confirmation test is for 40 women, regardless of whether they are normal people or patients with hallux valgus, and the distance between the hallux valgus angle and the foot pressure center in each state of barefoot, wearing commercial socks, and wearing the invention. The measurement test and functional reach test (FRT) were conducted. In addition, the girl who performed the effect confirmation test was age 21.5 ± 2.2 years old, height 160.0 ± 6.0 cm, and weight 53.6 ± 5.8 kg. The hallux valgus angle was measured by the full-cooperative measurement method that measures the angle between the first metatarsal bone and the outer edge of the proximal phalanx. To measure the forward movement distance of the foot pressure center, hold the static standing position on the foot pressure distribution measuring machine (Zebris Medical GmbH) for 10 seconds, then apply the maximum forward load, and the maximum forward movement point from the heel on the screen This was done by measuring the distance up to. The functional reach test was performed with a functional reach measuring machine (manufactured by OG Giken Co., Ltd.). The hallux valgus angles shown below were all measured by the full-scale cooperative measurement method.

  The invented product uses a shape-knit knitted fabric portion knitted by tack knitting, and an elastic knitted fabric portion knitted by hook knitting. As the compression member 40, a cloth knit-knitted from polyvinyl chloride fibers was used to have a diameter × length (about 9 × 20 mm). The elongation rates of the shape retaining knitted fabric portion and the stretchable knitted fabric portion were as follows. That is, a tack knitted fabric with the same material as the shape-retaining knitted fabric 80 mm × width 80 mm × about 2 mm thick, and a heel with the same material as the shape-retaining knitted fabric 80 mm × width 80 mm × thickness 1.5 mm A load of 5 kg was added to the knitted fabric, and the elongation rate was measured using a sock stretch tester manufactured by Katsuragi Seiki Co., Ltd .. The tucked knitted fabric had an elongation rate of 55% in the longitudinal (wale) direction and a lateral (course) direction. The elongation was 80%. The knit fabric had a longitudinal elongation of 105% and a lateral elongation of 170%. The ratio of the stretch rate of the knit fabric to the stretch rate of the tack fabric was 1.9 times in the vertical direction and 2.1 times in the horizontal direction.

  The result of the measurement test of hallux valgus angle is shown in FIG. As shown in Fig. 5, the hallux valgus angle with the invented product is 7.9 ± 4.7 degrees, the barefoot condition is 13.1 ± 5.3 degrees, and the commercial sock condition is 15.5 ± 5.1 degrees. By doing so, it can be seen that the hallux valgus angle is corrected. That is, when the inventive product is worn, the hallux valgus angle is improved by 5.2 degrees compared to the bare foot state, and by 7.6 degrees compared with the case where the commercial socks are worn. Further, it can be seen that the hallux valgus angle is enlarged in a state where a commercially available sock is worn, and that there is a tendency to increase the hallux valgus angle when a commercially available general sock is worn. That is, in the case of commercially available socks, it seems that there is a tendency to become a hallux valgus by wearing as in the case of wearing shoes such as high heels. In addition, the p value of this test is 0.01 or less as shown in the figure.

  The result of the measurement test of the foot pressure center forward movement distance is shown in FIG. As shown in FIG. 6, when the inventive product is worn, the foot pressure center forward moving distance moves 5.5mm forward than when barefoot, and 4.5mm forward than when wearing commercial socks. Yes. According to FIG. 6, it can be considered that the movement of the load to the forefoot has become possible by the mounting of the invention. In addition, p value of the result shown in FIG. 6 is 0.05 or less.

  FIG. 7 shows the test results of the functional reach test. As shown in FIG. 7, when the product of the invention is worn, the FRT value is 21.3 mm longer than that in the bare foot state, and 14.5 mm longer than when the commercial socks are worn. According to FIG. 7, it can be seen that the balance stability of the body is improved by wearing the invention. In addition, p value of the result shown in FIG. 7 is 0.05 or less.

  An effect confirmation test was performed when the invention was worn for a long time. The effect confirmation test was conducted for four patients with hallux valgus, measuring the hallux valgus angle with bare feet, wearing commercial socks, and wearing the invention, and then wearing the invention to spend daily life. When four months passed, the hallux valgus angle was measured in a barefoot state, a state in which a commercial sock was worn, and a state in which the invention was worn. In addition, each product was worn for 10 hours or more per day. The invention product used was the same as in Example 1.

  For the four hallux valgus patients who were tested, there were no reports of pain or complaints regarding long-term wearing of the product of the present invention despite long-term wearing of the product for 4 months. Table 1 shows the result of the effect confirmation test by long-term wearing of the invention product. As shown in Table 1, it can be seen that the hallux valgus angle is improved by 6 to 8 degrees in all of the state of wearing bare feet, a commercial sock, and the state of wearing the invention. Further, it can be seen that the degree of improvement of the hallux valgus angle due to the long-term mounting of the product of the present invention hardly changes depending on the measurement state and is not influenced by the measurement state. In addition, the numerical value shown in Table 1 is an average value.

  In addition, comparing the hallux valgus angle between the barefoot state and the state in which the commercial socks are worn, the same results as in Example 1 are shown. The hallux valgus angle in the state in which the commercial socks are attached is measured before the start of the test and for 4 months. In all later cases, it is larger than the hallux valgus angle in a bare foot state.

  For 15 women over 60 years old with hallux valgus, an effect confirmation test when wearing the invention for 2 months was conducted. Table 2 shows the results of the effect confirmation test. As shown in Table 2, it can be seen that the hallux valgus angle improved by 7.9 degrees compared to the barefoot state and 8.3 degrees compared to the state where the invention product was worn by wearing the invention product for two months. The numerical values shown in Table 2 are average values. The invention product used was the same as in Example 1.

10 Hallux valgus correction tool
20 Shape retaining knitted fabric
21a, 21b Elastic part
23 Ankle
23a, 23b, 23c Elastic part
25 Buttocks
27 Tabi
27a Mother bag
27b Large bag
29 Buffer
30 Sole
40 Compression member
45 bags
50 feet and ankles

Claims (8)

A device for correcting hallux valgus having a knitted fabric that circulates around a foot and a compression member that presses the ankle abductor muscle,
The knitted fabric has a shape-retaining knitted fabric portion made of a low stretch knitting covering the instep portion, and an elastic knitted fabric portion made of a highly stretchable knitting forming a sole.
The pressing member is a device for correcting hallux valgus that is housed in a bag portion provided on the inner surface side of the shape holding knitted fabric portion. A device for correcting hallux valgus having a knitted fabric that covers the feet and ankles and a compression member that presses the ankle abductor muscle,
The knitted fabric has a shape-retaining knitted fabric portion made of a low stretch knitted fabric covering the instep, and a stretch knitted fabric portion made of a highly stretchable knitted fabric covering the ankle portion, the heel portion, the sole portion, and the socks And
The pressing member is a device for correcting hallux valgus that is housed in a bag portion provided on the inner surface side of the shape holding knitted fabric portion.   The device for correcting hallux valgus according to claim 1 or 2, wherein the bag portion is made of a highly stretchable knitted fabric.   The hallux valgus correction tool according to any one of claims 1 to 3, wherein the compression member is made of a fiber having an official moisture content of 4.5% or less.   The device for correcting hallux valgus according to any one of claims 1 to 4, wherein the compression member has a cylindrical shape.   The device for correcting hallux valgus according to any one of claims 1 to 5, wherein the shape holding knitted fabric portion is knitted by tack knitting.   The device for correcting hallux valgus according to any one of claims 1 to 6, wherein the stretchable knitted fabric portion is knitted by warp knitting.   The said socks part is bifurcated shape which has a main bag part which accommodates a 1st footpad, and a large bag part which accommodates a 2nd to 5th footpad. The device for correcting hallux valgus according to any one of the above.

Images