JP2008106376A - Socks for avoiding sole pain - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pair of socks having cushionability and soft flexibility which relieve sole pain of each kind of patient, fitness which can correspond to various foot sizes and shapes, and durability to compression caused by long-term use, and further having both stuffiness preventing properties and easiness to wear. <P>SOLUTION: This pair of socks 1 for avoiding sole pain is so designed that a three-dimensional knitted fabric 2 which is made of front and back two-layer knitted fabrics and connecting fiber to connect the fabrics forms at least a part of a sole part, a stretchable knitted fabric 3 forms at least a part of a top side, a heel and a side part. Furthermore, the thickness of the three-dimensional knitted fabric is 2-10 mm, the compressive hardness when 25% compressing the three-dimensional knitted fabric with a 200 mm-diameter disc is 60-700 N, and a knitted fabric density expressed by the product of the course density and the wale density of at least one side of the front and back knitted fabric is 500-4,000 pieces. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a sock that can relieve pain in the sole of the foot.

  Conventionally, many patients suffer from pain that cannot be tolerated during walking due to plantar neuritis, Morton's disease, severe hallux valgus, refractory heels, osteoarthritis of the toes, and deformation of the toes due to rheumatoid arthritis. As a countermeasure, a cushioning material such as resin is placed on the shoe sole to relieve these pains. However, when cushioning material is placed on the shoe sole, the pain when the shoe is removed cannot be prevented. However, in the case of the resin cushioning material, there is a problem that the sole of the foot becomes damp and uncomfortable.

  In patent document 1, it is sewn in a bag shape so as to completely cover the lower part from the heel with a 3D mesh fabric in order to eliminate the stuffiness of the feet and absorb the impact to the foot during walking by the elasticity of the 3D mesh fabric. A foot supporter is disclosed. However, since the foot supporter described in Patent Document 1 uses a three-dimensional mesh fabric, stimulation by the surface irregularities of the three-dimensional mesh is too strong, and is insufficient to eliminate the sole pain. Furthermore, it is difficult to follow various foot sizes and shapes due to insufficient stretchability of the three-dimensional mesh fabric, and it is difficult to wear shoes because all parts of the supporter are formed of three-dimensional mesh fabric. There was a problem.

  Patent Document 2 includes a three-layered knitted fabric with double raschel knitting, and is a three-dimensional liner that covers the instep, soles, and heels. A sock-like liner having a water-absorbing property, sweat-absorbing property and cushioning property is disclosed. However, since the sock-shaped liner described in Patent Document 2 is used by being fitted into a shoe, it cannot prevent pain when the shoe is removed, and the compression hardness of the knitted fabric is not considered at all. For this reason, the maintenance of cushioning properties and anti-sticking properties were insufficient.

JP 2002-235204 A JP-A-7-148004

  The present invention solves the above-mentioned problems, has cushioning properties and surface flexibility that can relieve pain in the soles of patients with various medical conditions, fit properties that can cope with various foot sizes and shapes, and long-term The object is to provide a sock that has durability against compression when used, and also has dampness prevention and ease of wearing.

In order to solve the above-mentioned problems, the present inventors have intensively studied the compression hardness, surface density, stretchability and the like of a three-dimensional knitted fabric, and as a result, have completed the present invention.
That is, the present invention is as follows.

  (1) A three-dimensional knitted fabric composed of two layers of front and back knitted fabrics and connecting yarns connecting them forms at least a part of the sole, and a stretch knitted fabric forms at least a part of the upper, heel and side portions. It is a pain avoidance sock, the thickness of the solid knitted fabric is 2 to 10 mm, the compression hardness when compressing the solid knitted fabric by 25% with a disk having a diameter of 200 mm is 60 to 700 N, and the course on at least one side of the knitted fabric on the front and back A sole pain avoiding sock having a density of 500 to 4000 knitted fabric expressed by a product of density and wale density.

(2) The sole pain avoiding sock as described in 1 above, wherein the stretch rate in the vertical and horizontal directions of the three-dimensional knitted fabric is 15 to 150% and the elongation residual strain is 10% or less.
(3) The sole pain avoiding socks according to 1 or 2 above, wherein the stretch rate of the stretch knitted fabric is 25 to 150% and the residual elongation is 10% or less.

The present invention will be described in detail below.
The three-dimensional knitted fabric used for the bottom of the socks of the present invention refers to a three-dimensional knitted fabric in which two layers of front and back layers are connected by a connecting yarn, such as a double raschel knitting machine or a double circular knitting machine. It refers to a knitted fabric knitted by a knitting machine having a needle row.

  As the fiber material used for the connecting yarn of the three-dimensional knitted fabric, any synthetic fiber such as polytrimethylene terephthalate fiber, polyethylene terephthalate fiber, polybutylene terephthalate fiber, polyamide fiber, polypropylene fiber, polyvinyl chloride fiber, polyester elastomer fiber, etc. Although it can be used, in order to improve the compression durability at the time of long-term use and suppress the thickness reduction, it is preferable to use polytrimethylene terephthalate fiber, polybutylene terephthalate fiber, polyamide fiber, and polytrimethylene terephthalate fiber is used. Further preferred.

  A multifilament or a monofilament can be used as the connecting yarn, but it is more preferable to use a monofilament in order to provide a cushioning property for stepping with a foot and cushioning for relieving pain.

  In addition, the fineness of the fiber used for the connecting yarn is preferably 20 to 1000 dtex, more preferably 30 to 700 dtex, and still more preferably 30 to 500 dtex. When the fineness of the connecting yarn is within the above range, sufficient cushioning properties can be obtained. In particular, in the case of monofilament, the skin irritation is not too strong and is effective in preventing pain in the sole of the foot.

As the fiber material forming the knitted fabric of the front and back, synthetic fibers such as polyester fiber, polyamide fiber, polyacrylic fiber, polypropylene fiber, natural fibers such as cotton, hemp, wool, cupra rayon, viscose rayon, Arbitrary fibers such as regenerated fibers such as lyocell can be used. In particular, it is more preferable to use highly hygroscopic fibers such as cotton, rayon, and polyamide fibers in order to prevent foot stuffiness.
The fineness of the fibers forming the front and back knitted fabrics is preferably 50 to 1000 dtex.

  The three-dimensional knitted fabric used for the bottom of the socks of the present invention maintains an appropriate cushioning property for relieving pain at the bottom of the foot, and maintains durability that does not collapse the thickness even when used for a long time. The compression hardness when compressing a solid knitted fabric by 25% with a disk having a diameter of 200 mm is 60 to 700 N, preferably 70 to 600 N, and more preferably 80 to 500 N.

  When the compression hardness is less than 60 N, the cushioning effect for relieving pain in the sole of the foot is insufficient, and the compression durability is poor and it tends to be crushed. On the other hand, when the compression hardness exceeds 700 N, the cushioning effect that is too hard and relieves pain at the sole becomes insufficient.

  The solid knitted fabric changes in hardness and compression durability depending on the form of the connecting yarn, but when the three-dimensional knitted fabric is compressed, the front and back knitted fabrics are prevented from being displaced due to shearing and compressed, and for a long time. In order to improve the durability when compressed and prevent thickness reduction, the connecting yarn of the three-dimensional knitted fabric has at least two connecting yarns facing the knitted fabric on the front and back sides in the opposite direction as viewed from the cross section in the knitting start direction. It is preferable to be inclined and connected to a cross shape (X shape) or a truss shape.

  At this time, in both the cross shape and the truss shape, the connecting yarn may be composed of two connecting yarns, and one identical connecting yarn is folded back on the front surface or the back surface and apparently has two. There may be. In addition, the cross shape and the truss shape may be formed on the same course or may be formed on different courses.

  The thickness of the three-dimensional knitted fabric is 2 to 10 mm, preferably 3 to 7 mm. If the thickness is less than 2 mm, the cushioning property that relieves pain in the sole of the foot is poor, and if it exceeds 10 mm, it is difficult to wear shoes.

  The knitted fabric on the front and back of the three-dimensional knitted fabric used for the bottom of the socks of the present invention is a knitted fabric density represented by the product of the course density and the wale density of at least one side knitted fabric so as not to give excessive stimulation to the sole. Is 500 to 4000, preferably 600 to 3800, and more preferably 700 to 3600.

When the density of the knitted fabric is less than 500, it becomes close to a state where the sole is supported by a point, the stimulation of the stitch to the sole is strong, and it becomes difficult to eliminate the pain of the sole. If the density of the knitted fabric exceeds 4000 pieces, it becomes difficult to knit the three-dimensional knitted fabric, and the three-dimensional knitted fabric becomes too hard to obtain an appropriate cushioning property.
The knitted fabric density is a value obtained by integrating the course density (pieces / 2.54 cm) per one inch (2.54 cm) and the wale density (pieces / 2.54 cm).

  In the present invention, the three-dimensional knitted fabric preferably has an elongation ratio of 15 to 150%, more preferably 25 to 120%, still more preferably in order to follow various foot sizes and shapes. Is 30 to 100%. When the stretch rate is in the above range, it is easy to fit the foot when worn in a sock shape, and it is difficult to slip when walking with or without wearing shoes.

The elongation rate refers to the elongation rate when a load per 14.7 N / 5 cm width is applied to a solid knitted fabric as a 5 cm width strip.
In the present invention, the three-dimensional knitted fabric preferably has an elongation residual strain of 10% or less in order to improve the fit to the foot and prevent the socks from loosening or slipping during wearing.

  In order to make the elongation ratio and the elongation residual strain in the warp direction and the transverse direction of the three-dimensional knitted fabric within an appropriate range, the material, the knitting structure, and the finishing method of the three-dimensional knitted fabric are important. In particular, with respect to the material, it is preferable to knit spandex fibers into the knitted fabrics on the front and back sides. The spandex fiber is preferably knitted by a method of knitting with other fibers constituting the knitted fabric on the front and back sides in the state of the original yarn or the state covered with other fibers such as polyamide fiber and polyester fiber. At this time, the fineness of the spandex fiber is preferably 40 to 350 dtex.

  If the front and back knitting structures are smooth, the spandex fibers should be knitted with 1 x 1 tricot knitting or insertion knitting, and the other fibers to be knitted should be knitted with 1 x 2 tricot or various knitting structures Is preferred. In addition, in the case of a small perforated structure, the number of stitches (the number of courses) constituting one mesh is set to 2 courses or more and 12 courses or less, and spandex fibers are knitted with insertion knitting or knit loop knitting with other fibers. It is preferable. When spandex fibers are knit, it is preferable to hide spandex fibers so as not to appear on the surface of the three-dimensional knitted fabric in order to prevent the spandex fibers from becoming brittle.

  When spandex fibers are not used, it is preferable to use stretched crimped yarns etc. on the front and back knitted fabrics, and balance the elongation ratio in the vertical and horizontal directions in the finishing process, It is preferable to perform heat setting while suppressing excessive tension.

  The sock of the present invention is a sock in which at least a part of the sole is formed of a three-dimensional knitted fabric and at least a part of the upper, the heel, and the side surface is formed of an elastic knitted fabric. The three-dimensional knitted fabric may be used on at least a part of the sole, but it is preferable to use the solid knitted fabric on the entire surface of the sole in order to prevent a step on the sole and provide cushioning properties on the entire surface.

In the sock of the present invention, the three-dimensional knitted fabric forms at least a part of the sole, and at the same time, partially forms the instep, the heel, and the side part, thereby relieving pain on the side part of the foot. .
In the socks of the present invention, it is necessary to use an elastic knitted fabric that is not a three-dimensional knitted fabric for at least a part of the upper, the heel, and the side surface. In particular, by using a stretch knitted fabric at a site where it is not necessary to relieve pain in the foot, the fit of the sock to the foot is increased, and at the same time the extra thickness is eliminated, making it easier to wear shoes.

  Solid knitted fabric and elastic knitted fabric are mainly joined by sewing to form desired socks, but the basic socks shape is formed with elastic knitted fabric and partially centered on the sole Alternatively, the sock may be formed by sewing a three-dimensional knitted fabric or by adhering with an adhesive or a double-sided fastener.

The stretch knitted fabric referred to in the present invention is a single knitted fabric in which spandex fibers are knitted, such as a 2-way tricot or a bear tengu, or a crimped yarn without knitting spandex fibers. A single circular knitted fabric or a double circular knitted fabric is preferably used.
The stretch knitted fabric has an elongation rate of 25 to 150% in the vertical direction and the horizontal direction, and an elongation residual strain of 10% or less, which ensures sufficient fit to the foot and prevents displacement during wearing. Preferred above.

  Furthermore, the stretch knitted fabric is preferably 1 mm or less in view of ease of wearing shoes. The fibers used for the stretch knitted fabric can be various fibers such as polyester fibers, polyamide fibers, cotton, and rayon. In particular, fibers with high hygroscopic properties such as cotton, rayon, and polyamide fibers are knitted. It is more preferable to prevent foot stuffiness.

In the socks of the present invention, it is preferable that antibacterial and deodorant processing is imparted to the three-dimensional knitted fabric and the stretch knitted fabric, and the bottom surface of the three-dimensional knitted fabric is coated with a non-slip resin. Is preferred.
The sock mouth is sewn in the shape of a pipe, and by inserting a rubber string or sewing a rubber string, etc., it is possible to give a greater stretchability to improve detachability and fit. preferable.

  The sole pain avoiding socks of the present invention use a three-dimensional knitted fabric having an appropriate cover factor and compression hardness for the knitted fabric forming the bottom portion, so that the sole pain caused by various medical conditions can be relieved. Socks that can be. Moreover, it is easy to fit the feet of various sizes and shapes by setting the elongation rate and elongation residual strain of the three-dimensional knitted fabric within the appropriate ranges. Furthermore, by using a stretchable single knitted fabric for at least a part of the upper, the heel, and the side surface, there is an effect that the foot is more fit and the shoes are easy to wear.

  EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated further, this invention is not limited at all by an Example. In addition, the evaluation method and measurement method of each characteristic are as follows.

(1) Thickness (mm) of three-dimensional knitted fabric and elastic knitted fabric
A sample is cut into a 10 cm square, and the thickness is measured using a JA type special dial thickness gauge (peacock) manufactured by Ozaki Mfg. Co., Ltd. and sandwiched between 30 mm diameter measuring plates. The measurement is repeated 5 times and the average value is obtained.

(2) Elongation rate and elongation residual strain A sample is cut into 15 cm (long) × 5 cm (width) to prepare a test piece, and a 10 cm interval between the test pieces is marked. Test specimens are collected in the vertical direction (direction along the wale row) and the horizontal direction (direction along the course row).

One end of the test piece is hung with the chuck fixed, and the other end is hung with a load of 14.7 N fixed with the chuck. Measure the length L ₁ of Shirushikan after 1 minute, measuring the length L ₀ between marks after two minutes to release the load. The elongation rate I (%) and the elongation residual strain ε (%) are calculated according to the following formula.
Elongation rate I (%) = [(L ₁ −10) / 10] × 100
Elongation residual strain ε (%) = (L ₀ −10) / 10

(3) Compression hardness (N)
Using a Shimadzu autograph AG-B type (manufactured by Shimadzu Corporation), a 25 mm square solid knitted fabric placed on a rigid plane was compressed at a speed of 100 mm / min with a 200 mm diameter compression plate. After compressing 25% of the thickness, it is immediately opened at a speed of 100 mm / min. The load (N) at the time of 25% compression at this time is measured.

(4) Plantar pain relief effect Three patients with rheumatoid arthritis who feel pain in the sole of the foot during walking wear the socks made in the example for 1 week, and evaluate the pain relief effect according to the following criteria: 3 The average value of the names was obtained.

5 points: Very effective in relieving pain 4 points: Slightly effective in relieving pain 3 points: Little effect in relieving pain 2 points: Pain increases.

(5) Fit to foot In the same manner as (4) above, ask 3 patients with rheumatoid arthritis to wear the socks made in the example for 1 week and evaluate the fit to the foot according to the following criteria. And the average value of 3 persons was calculated | required.

5 points: fits very well 4 points: fits slightly 3 points: hardly fits 2 points: loose or tight

(6) Ease of wearing shoes In the same manner as (4) above, we asked three patients with rheumatoid arthritis to wear the socks prototyped in the example for one week, and evaluated the ease of wearing shoes according to the following criteria. And the average value of 3 persons was calculated | required.

5 points: Very easy to wear shoes 4 points: Slightly easy to wear shoes 3 points: Slightly difficult to wear shoes 2 points: Very difficult to wear shoes

(7) Compression durability of three-dimensional knitted fabric In the same manner as (4) above, three patients with rheumatoid arthritis wear the socks made in the example for one week. The thickness reduction was evaluated according to the following criteria, and the average value of three people was obtained.

5 points: Almost no decrease in thickness 4 points: There is a slight decrease in thickness 3 points: There is a considerable decrease in thickness 2 points: There is a significant decrease in thickness, and almost no thickness is lost

[Example 1]
Using a 22 gauge, 3.8 mm double raschel knitting machine equipped with six rivets, a spandex fiber of 77 dtex / 4 filament from the ridge (L1) forming the front knitted fabric, and 84 dtex / 36 from (L2) Polyethylene terephthalate fibers of filaments are supplied in an all-in arrangement, respectively, and a tie for connecting yarn (L3) to a 33 dtex polyethylene terephthalate monofilament in an all-in arrangement and from the ridge (L5) forming the knitted fabric on the back side 84 dtex / 36 filaments of polyethylene terephthalate fiber was fed in a 3 in 1 out array, and 77 dtex / 4 filament spandex fibers from cocoon (L6) were fed in a 1 in 1 out 3 in 1 out array.

  In the knitting structure shown in “knitting structure 1” below, the raw machine is knitted with an on-machine course of 42.8 course / 2.54 cm, and after scouring, dyeing and heat setting, a course density of 65 pieces / 2.54 cm, wale A solid knitted fabric having a density of 38 pieces / 2.54 cm and a thickness of 3.3 mm was obtained.

  The resulting solid knitted fabric is used for the entire sole, and as a stretch knitted fabric, a rubber knitted fabric obtained by using a polyester false twisted yarn of 84 dtex / 36 filament is used for the upper, heel and side portions. Then, the periphery of the sole shape of the three-dimensional knitted fabric and the elastic knitted fabric were sewn with overlock to obtain the socks of the present invention.

A schematic diagram of the surface of the sock obtained is shown in FIG. 1, and a schematic diagram of the bottom surface is shown in FIG. In FIG. 1, the mouth portion 4 is sewn into a pipe shape and a rubber string is inserted.
The socks of the present invention have cushioning properties and surface flexibility that can relieve pain at the bottom of the foot, fit very well to the foot, have little thickness reduction after use, and have good durability. . Moreover, it was easy to wash, easy to dry, and hygienic.

(Knitting organization 1)
L1: 2022/2422 /
L2: 6444/0222 /
L3: 2042/4624 /
L5: 4486/6646/6686/6624/2220/2224/2220/2224 /
L6: 4420/2224/2220/2246/6686/6646/6686/6646 /

[Example 2]
Using a 22 gauge, 6mm double raschel knitting machine equipped with 6 reeds, all tentative yarns of polyethylene terephthalate fibers of 167 dtex / 48 filaments from reeds (L1, L2) forming the surface knitted fabric 100 dtex nylon monofilaments are fed in an all-in arrangement from the tie for the connecting yarn (L3), and 167 dtex / 48 filaments from the ridges (L5, L6) forming the back knitted fabric. Polyethylene terephthalate yarn was supplied in a 3 in 1 out array for the L5 cocoon and in a (1 in) 1 out 3 in array for the L6 cocoon.

In the knitting structure shown in “knitting structure 2” below, the raw machine is knitted at an on-machine course of 30 courses / 2.54 cm, and after scouring and heat setting, a course density of 33 pieces / 2.54 cm, a wale density of 22 pieces / 2. A three-dimensional knitted fabric of 54 cm and a thickness of 3.6 mm was obtained.
The obtained three-dimensional knitted fabric was used on the entire surface of the sole, and the sock of the present invention was obtained in the same manner as in Example 1.

  The socks of the present invention have cushioning properties and surface flexibility that can relieve pain in the sole of the foot, have little thickness reduction after use, and have good durability. Moreover, it was easy to wash, easy to dry, and hygienic.

(Knitting organization 2)
L1: 2022/2422 /
L2: 4644/2000 /
L3: 2020/2424 /
L5: 4420/2224/2220/2224/4468/6664/6668/6664 /
L6: 4468/6664/6668/6664/4420/2224/2220/2224 /

[Example 3]
In Example 2, when the raw machine of a three-dimensional knitted fabric is heat-set, the tentering ratio is made larger than in Example 2, the course density is 34 pieces / 2.54 cm, the wale density is 20 pieces / 2.54 cm, and the thickness is 3. A 6 mm solid knitted fabric was obtained.

  Using the obtained three-dimensional knitted fabric, the socks obtained in the same manner as in Example 2 have a cushioning property and surface flexibility that can relieve pain in the sole, although the fit to the foot is slightly inferior, Even after use, the thickness decreased little and the durability was good. Moreover, it was easy to wash, easy to dry, and hygienic.

[Comparative Example 1]
A sock was obtained in the same manner as in Example 2, except that the connecting yarn of the three-dimensional knitted fabric was changed to 22 dtex nylon monofilament.
The obtained socks had a slightly soft compression hardness of the three-dimensional knitted fabric, so that they were easily attached to the bottom, had little effect of relieving the pain in the sole, and the thickness reduction after wearing was somewhat large.

[Comparative Example 2]
Using a double raschel knitting machine with 6 gauges and a 12 mm gap between the hooks, 167 dtex / 48 filament polyethylene terephthalate raw yarn from the ridges (L1, L2) forming the surface knitted fabric is used as a tie for the connecting yarn. 200Ltex nylon monofilament is supplied from (L3, L4), and 167 dtex / 48 filament polyethylene terephthalate raw yarn is fed to the L1, L3, L5 ridges from the ridges (L5, L6) forming the back knitted fabric. Is a 1 in 1 out sequence, and the L2, L4, and L6 cages were supplied in a 1 out 1 in sequence.

  In the knitting structure shown in “knitting structure 1” below, the machine is knitted at a density of 22 courses / 2.54 cm on the machine course, and the resulting machine is scoured, after heat setting, a course density of 28 pieces / 2.54 cm, A three-dimensional knitted fabric having a wale density of 14 pieces / 2.54 cm and a thickness of 4.0 mm was obtained.

The obtained three-dimensional knitted fabric was used on the entire surface of the sole, and socks were obtained in the same manner as in Example 1.
Since the obtained socks had a low knitted fabric density and a large mesh size, the soles were strongly stimulated and could not relieve pain in the soles. Moreover, since the elongation rate of the knitted fabric was too small, the fit was poor.

(Knitting organization 1)
L1: 4644/4244/4644/4244/4644/4222/2202/2422/2202/2422/2022/2444 /
L2: 2022/2422/2022/2422/2022/2444/4644/4244/4644/4244/4644/4222 /
L3: 4242/4646/4242/881010/4242/4646/6868/6644/6868/620/6868/6464 /

L4: 6868/6464/6868/2020/6868/6644/4242/4646/4242/810810/4242/4646 /
L5: 4446/4442/4446/4442/4446/4442/2220/2224/2220/2224/2220/2224 /
L6: 2220/2224/2220/2224/2220/2224/4446/4442/4446/4442/4446/4442 /

[Comparative Example 3]
In Example 1, the upper, the heel, and the side part were all changed to the solid knitted fabric obtained in Example 1, and a sock made entirely of the solid knitted fabric was obtained. The obtained socks were good for both pain prevention and fit when the shoes were not worn. It was.
The results of the above examples and comparative examples are shown in Table 1.

  The socks of the present invention have a cushioning property and surface flexibility that can relieve pain in the soles of various patients during walking, and fit that can accommodate various foot sizes and shapes, and long-term use It is a sock that combines durability against compression, dampness prevention and ease of wearing, and it can be used easily and hygienically.

It is especially effective for patients who have pain that cannot be tolerated during walking due to plantar neuritis, Morton's disease, severe hallux valgus, refractory heels, osteoarthritis of the toes, and deformation of the toes caused by rheumatoid arthritis. It can be used.
Further, it can be effectively used as a general sports sock as a sock for buffering when walking for a long time such as walking, mountain climbing, golf, jogging and the like.

It is the schematic which shows the surface of the socks of this invention. It is the schematic which shows the bottom face of the sock of this invention.

Explanation of symbols

1 Socks 2 Solid knitted fabric 3 Elastic knitted fabric 4 Mouth

Claims (3)

  A sock-avoiding sock that has a three-dimensional knitted fabric composed of two layers of front and back knitted fabrics and a connecting yarn that connects them forms at least a part of the sole, and an elastic knitted fabric forms at least a part of the upper, heel, and side portions. The thickness of the solid knitted fabric is 2 to 10 mm and the compression hardness when compressing the solid knitted fabric by 25% with a disk having a diameter of 200 mm is 60 to 700 N. The course density and wale of at least one side of the knitted fabric on the front and back sides A sole pain avoiding sock having a knitted fabric density represented by a product of density of 500 to 4000.   The sole pain avoiding sock according to claim 1, wherein the three-dimensional knitted fabric has a vertical and horizontal elongation ratio of 15 to 150% and an elongation residual strain of 10% or less.   The sole pain avoiding sock according to claim 1 or 2, wherein the stretch rate of the stretch knitted fabric is 25 to 150% in the vertical direction and the horizontal direction, and the residual strain is 10% or less.

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