KR20200122050A - Ancillary equipment for hip joint adduction during MRI for Femoro Acetabular Impingement diagnosis - Google Patents

Abstract

The present invention relates to an auxiliary device for hip joint adduction during an MRI examination for diagnosing a femoro acetabular impingement (FAI), which maintains a state that a leg is rotated at 15 degrees inward in an FAI MRI, which is an image for confirming and diagnosing a cause of an FAI during a high joint MRI examination. To this end, according to a first embodiment of the present invention, the auxiliary device comprises: a pair of shoes for covering both feet and formed of a non-magnetic material; a fixed plate fixed to a lower end of each of the shoes; a rotating body coupled to a coupling hole of the fixed plate to be rotated, and having an insertion groove at a lower end thereof with the length formed in a lateral direction; and a shoe width adjusting bar having both ends inserted into each insertion groove to connect the shoes, and provided with a long hole at both ends, which has the length in a longitudinal direction, and laterally moved in a state of being coupled to the rotating body by a fixing bolt penetrating the long hole.

Description

Ancillary equipment for hip joint adduction during MRI for Femoro Acetabular Impingement diagnosis {Ancillary equipment for hip joint adduction during MRI for Femoro Acetabular Impingement diagnosis}

The present invention relates to an assistive device for hip pronation during an MRI examination for diagnosing femoral acetabular impingement syndrome, and more particularly, an image for identifying and diagnosing the cause of a femoral acetabular collision during an MRI examination of the hip joint. The present invention relates to an assistive device for hip pronation during MRI examination for diagnosing femoral acetabular impingement syndrome to keep it rotated by 15°.

The hip joint is the largest joint among human joints and has the second largest range of motion after the shoulder joint. It consists of the acetabulum and the proximal femur, and the stability of the joint is more important than the range of motion for weight-bearing and weight transfer functions.

The stability of the hip joint is a ball and socket joint and is very stable because the spherical femoral head is well supported by the cup-shaped acetabulum and acetabulum. In addition, the Bigelow ligament formed by the thickening of the joint capsule and the anterior joint capsule surrounding the hip joint, the ischiofemoral ligament, and the pubofemoral ligament help stability.

Unlike other joints, these hip joints are located very deeply and firmly, and their distribution is diverse, including not only joints, but also large muscles, ligaments, nerves, and blood vessels.Therefore, various causes of diseases may exist in patients who complain of pain in the hip joint. have.

Recently, as activities of various sports clubs increase as part of their leisure time, many people suffer from hip joint pain due to excessive and excessive movements. The cause of the pain is a sensational type that exists between the non-oral cavity and the joint capsule as a cause of the pain. The cause of hip arthritis, which appears due to damage to the fibrocartilage tissue of the nasal lip, is known to be the cause.

The anatomical mechanism of this disease is that the bone deformity of the acetabulum and the femur is caused by repeated contact between the acetabular edge and the proximal femur, and for this reason, it is developing into Femoro Acetabular Impingement (FAI).

The classification of impingement is based on the mechanism of joint damage, where nonspherical femoral ball heads cause Cam-type collisions, and when the acetabulum overcovers the femoral head (overcoverage), pincer-blood impingement occurs. Most of the patients with femoral acetabular impingement syndrome (FAI) have two types of impingement, femoral change and acetabular change.

On the other hand, as the radiological diagnosis method for diagnosing femoral acetabular impingement syndrome, there is MR arthrography (MRA) using Magnetic Resonance Image (MRI), which is the most reliable diagnostic method in terms of sensitivity and specificity. to be.

For accurate diagnosis of femoral acetabular impingement syndrome using this method, the spherical shape of the hip joint is a small structure, but accurate diagnosis and evaluation must be preceded, and it must be made very accurately using MRI.An angel of anteversion, which indicates the degree of distortion of the pelvis. ) Was retroversion in the early prenatal stage, but gradually converted to anteversion, and the angle of infectiousness was 5-10° at 11 weeks of onset, then gradually increased to 45° at 36 weeks, and then gradually decreased after birth. Therefore, it forms an infectious angle of about 31° at the first year of life, and about 15° at the end of growth. For accurate diagnosis, the foot is adducted about 15° to compensate for the infectious angle of the femoral neck during hip MRI examination. Keep the long axis parallel to the table for 30 to 40 minutes.

However, due to the nature of the MRI examination, it is very difficult to perform an examination while maintaining both legs 15° without an assistive device and maintaining it for about 30 to 40 minutes. This makes accurate diagnosis difficult, and a lot of stress on the body during examination. There is this.

In order to solve the above problems, the present invention can adjust the angle and rotate the leg 15° inward in the FAI MRI, which is an image that checks and diagnoses the cause of the femoral acetabulum collision during hip MRI examination. The purpose of this study is to provide an assistive device for hip pronation during MRI examination for diagnosing femoral acetabular impingement syndrome, which is maintained in the same state.

In an MRI examination for diagnosing femoral acetabular impingement syndrome according to an embodiment of the present invention for solving the above problem, the assistive device for hip pronation may include a pair of shoes that are formed of a non-magnetic body while covering both feet; A fixing plate fixed to the bottom of each of the pair of shoes; It is coupled to the coupling hole of the fixed plate and formed to be rotatable, and at the lower end, a rotating body having an insertion groove forming a length in a lateral direction and both ends are inserted into each insertion groove to connect a pair of shoes, but the length at both ends It may include a shoe width adjustment bar capable of lateral movement while being fastened to the rotating body by a fixing bolt passing through the long hole by providing a long hole forming a length in the direction.

Here, an angle display portion may be formed on the fixed plate, and the rotating body may be provided with a scale protrusion protruding toward the angle display portion.

In addition, the long hole may have a length indicator.

In addition, the assistive device for hip pronation during the MRI examination for diagnosing the femoral acetabulum collision syndrome further includes a ground seating aid that is coupled to the back of the shoe to prevent the heel of the subject from contacting the MRI examination table during the MRI examination. Including, the ground mounting aid is coupled to the rear surface of the shoe, and a mounting plate providing a moving groove in which a rail having a length is formed along the rear surface of the shoe, and the front surface forms a curved surface and the rear surface forms a flat surface. It is mounted in the moving groove so as to face the rear surface of the shoe, and a moving protrusion is provided so that the moving protrusion is mounted in the moving groove so that it is inserted into the rail, and may be formed to rotate along the length of the moving groove.

In addition, the ground mounting member may form an impact absorbing layer or a protrusion layer on the rear surface.

In addition, a plurality of curved grooves may be formed in one of the rotating body and the coupling hole, and an irregularity corresponding to the groove may be formed in the other.

In addition, a plurality of curved concave or convex portions may be formed on the inner circumferential surface of the long hole.

Next, the assistive device for hip pronation during an MRI examination for diagnosing femoral acetabular impingement syndrome according to a second embodiment of the present invention includes a pair of shoes formed of a non-magnetic body surrounding both feet; A fixing plate fixed to the bottom of each of the pair of shoes; Both ends are inserted into the fixed plate to connect a pair of shoes, and both ends are formed to be rotatable by being hooked on a rotating shaft protruding upward from the center of a fixed body fixed inside the fixed plate. It includes a shoe width adjustment bar formed to be laterally moved along the length of the locking hole of the shape, and a separation prevention stopper coupled to an upper end of the rotation shaft to prevent the upper separation of the shoe width adjustment bar, and the fixture and separation prevention At least one of the stoppers has a fixing protrusion protruding in the direction of the shoe width adjustment bar, and the shoe width adjustment bar has a plurality of fixing holes spaced apart at predetermined intervals along the rotation radius of the fixing protrusion, the plurality of fixing The hole is patterned along the length of the shoe width adjustment bar, a plurality of curved grooves or irregularities are formed on the inner circumferential surface of the locking hole, a length display portion is formed on the shoe width adjustment bar, and an angle display portion is formed on the shoe. Can be.

Next, an auxiliary device for hip pronation during an MRI examination for diagnosing femoral acetabular impingement syndrome according to a third embodiment of the present invention includes: a pedestal mounted on an MRI examination table; Two rotating members mounted on the pedestal so as to be rotatable to the left and right, and a connecting part that connects the rotating members so that the rotation of the two rotating members is operated together and is controlled manually or automatically, the connecting part, the rotating force to the left and right A power transmission member composed of a motor or a handle to generate; A first bevel gear axially connected to the power transmission member to rotate; Second bevel gears engaged with both sides of the first bevel gear; A third bevel gear axially connected to the second bevel gear, and a fourth bevel gear meshed with the third bevel gear and axially connected to the rotating member.

In an MRI examination for diagnosing femoral acetabular impingement syndrome according to an embodiment of the present invention, the assistive device for hip pronation during an MRI examination is an image that identifies and diagnoses the cause of a femoral acetabular collision during a hip MRI examination. ° Keep it rotated so that the diagnosis of femoral acetabular impingement syndrome can be made more accurately.

In addition, the assistive devices for hip pronation during the MRI examination for diagnosing femoral acetabular impingement syndrome according to an embodiment of the present invention are advantageous in enhancing the convenience of examination by providing configurations that make them comfortable even when the legs are kept 15° inward. There is this.

1 is a perspective view of an auxiliary device for hip pronation during an MRI examination for diagnosing a femoral acetabular impingement syndrome according to a first embodiment of the present invention.
FIG. 2 is a bottom perspective view of the assisting device for hip pronation of FIG. 1.
3 is an exploded perspective view of an assisting device for pronation of the hip joint of FIG. 1.
FIG. 4A is a view showing another form of a shoe, which is a configuration of an auxiliary device for hip pronation of FIG. 1, and FIG. 4B is an exemplary view of the use of the shoe of FIG. 4A.
FIG. 5 is an exemplary view of binding due to the concave and convex portions of the rotating body and the coupling unit, which is a configuration of the auxiliary device for hip pronation of FIG. 1.
6 is a block diagram of a ground seating assisting device additionally configured to the assisting device for hip pronation of FIG. 1.
7 is an exemplary view of the use of the ground seating aid of FIG. 6.
8 is a perspective view of an auxiliary device for hip pronation during an MRI examination for diagnosing a femoral acetabular impingement syndrome according to a second embodiment of the present invention.
9 is a bottom perspective view of the auxiliary device for hip joint pronation of FIG. 8 projected.
FIG. 10 is a projection view as viewed from the rear of the assisting device for hip pronation of FIG. 8.
Figure 11 (a) is a diagram illustrating a state of fixing the rotational position between the fixing protrusion and the fixing hole, which is a configuration of the auxiliary device for pronation of the hip joint of Figure 8, (b) is a shoe width adjustment in the state of Figure 8 (a) It is a diagram illustrating a change in the position between the fixing protrusion and the fixing hole when the shoe width is adjusted through the bar.
12 is a perspective view of an auxiliary device for hip pronation during an MRI examination for diagnosing femoral acetabular impingement syndrome according to a third embodiment of the present invention.
FIG. 13 is a view as viewed from the front after removing the MRI table and the support for the assisting device for hip pronation of FIG. 12.
FIG. 14 is a photograph of measuring an alpha angle through the image in the oblique axis direction of fat removal Proton Density before the use of the assisting device for hip pronation of FIG. 1.
FIG. 15 is a photograph of measuring an alpha angle through the image in the oblique axis direction of fat removal Proton Density after use of the assisting device for hip pronation of FIG. 1.
FIG. 16 is an alpha angle measurement photograph as viewed through an image reconstructed in the 3 o'clock direction of the 3D trufi oblique sagittal image after the use of the assisting device for hip pronation of FIG. 1.
17 is an observation photograph of Anterior acetabular labrum (A), Anterior articular cartilage (B), Posterior articular cartilage (C), and Posterior acetabular labrum (D) as viewed through a Proton Density oblique-axis direction image examined by a fat removal technique.

Hereinafter, the description of the present invention with reference to the drawings is not limited to a specific embodiment, and various transformations may be applied and various embodiments may be provided. In addition, the content described below should be understood to include all conversions, equivalents, and substitutes included in the spirit and scope of the present invention.

In the following description, terms such as first and second are terms used to describe various elements, and their meanings are not limited thereto, and are used only for the purpose of distinguishing one element from other elements.

The same reference numbers used throughout this specification denote the same elements.

Singular expressions used in the present invention include plural expressions unless the context clearly indicates otherwise. In addition, terms such as "include", "include" or "have" described below are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification. It is to be construed and not to preclude the possibility of the presence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

In addition, in the description with reference to the accompanying drawings, the same reference numerals are assigned to the same components regardless of the reference numerals, and redundant descriptions thereof will be omitted. In describing the present invention, when it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted.

Hereinafter, an auxiliary device for hip pronation during an MRI examination for diagnosing femoral acetabular impingement syndrome according to an embodiment of the present invention (hereinafter, referred to as'assistant device for hip pronation') will be described in detail based on the accompanying drawings. While looking at a specific embodiment together.

1 is a perspective view of an auxiliary device for hip pronation during an MRI examination for diagnosing femoral acetabular impingement syndrome according to a first embodiment of the present invention, and FIG. 2 is a bottom perspective view of the assisting device for hip pronation of FIG. 3 is an exploded perspective view of an auxiliary device for pronation of the hip joint of FIG. 1.

In addition, Figure 4 (a) is a view showing another form of a shoe that is one configuration of the auxiliary device for hip pronation of Figure 1, (b) is an example of the use of the shoe of Figure 4 (a), FIG. 5 is an exemplary view of binding due to the concave and convex portions of the rotating body and the coupling unit, which is a configuration of the auxiliary device for hip pronation of FIG. 1.

1 to 5, the auxiliary device 100 for pronation of the hip joint according to the first embodiment includes a shoe 110, a fixed plate 120, a rotating body 130, and a shoe width adjustment bar 150. It can be configured to include.

Specifically, the shoes 110 are a pair of two pairs as a tool for wrapping both feet, and are not limited to any specific shape, and may be formed of a nonmagnetic material. Here, the nonmagnetic material is not particularly limited, but may be made of a cloth material that is comfortable to wear and is relatively inexpensive to minimize maintenance costs.

In addition, it is preferable that the shoes 110 are formed to be fixed while covering both feet. As a fixing body for this, a shoe fixing body 112 in the form of a Velcro type or a clip may be provided. The Velcro-type or clip-type shoe fixture 112 is easily detachable and easy to use. However, this is an example and is not necessarily limited, and it does not matter which shoe fixture is used as long as both feet are wrapped and fixed.

In addition, as shown in FIG. 2, the shoes 110 may be formed so that the shoe fixture 112 moves in a lateral direction or an inclined direction. To this end, guide grooves 114 are provided at the bottom of the shoes 110 in the lateral or inclined direction, and guide rails (not shown) are formed on both sides of the guide groove 114 in the longitudinal direction, and the shoe fixture ( 112) may be provided with an insertion protrusion (not shown) that is inserted into the guide rail and moved. In addition, a locking portion 1142 in a form in which concave portions and convex portions alternate along the length direction of the guide groove 114 may be formed.

That is, the shoe fixing body 112 is formed to be movable along the guide groove 114, and the insertion protrusion (not shown) is inserted into the guide rail (not shown) to prevent separation, and when moving, the locking portion When it moves along the 1142 and is seated in the concave, the position may be fixed.

The moving structure of the shoe fixture 112 is formed to change the position of the shoe fixture 112 according to the size of the subject's foot, so that a single shoe 110 can accommodate all subjects of various foot sizes. You can, and by fitting to the size of the foot, you can create a stronger holding force.

The fixing plate 120 may be fixed to the bottom of each pair of shoes. That is, the fixed plate 120 is provided for each pair of shoes 110. Here, the fixing plate 120 may be fixed by a fixing bolt (not shown), the fixing plate 120 may be formed of a plastic material, and the fixing bolt may be formed of a stainless material that does not generate magnetism. . For example, it may be stainless steel 307.

In addition, the fixing plate 120 may be formed with a coupling hole 122, the coupling hole 122 is a space in which one end of the rotating body 130, which will be described later, is inserted, and the one end of the rotating body 130 is inserted. It is also possible to form an axial center for rotation. Here, it is preferable that the coupling part 122 is formed higher than the height of the fixing plate 120 for smooth coupling and operation of the rotating body 130.

In addition, the fixing plate 120 may form an angle display portion 124 around the coupling hole 122, the angle display portion 124 is used together with the scale protrusion 134 to be described later, the coupling hole 122 It can be used to know the angle of rotation of the rotating body 130 that rotates around the axis.

The rotating body 130 is coupled to the fixed plate 120 through the coupling hole 122, and may be formed to be rotatable about the coupling shaft. In addition, the rotation body 130 may be formed with an insertion groove 132 forming a length in the lateral direction at the bottom. In addition, the rotating body 130 may be provided with a graduation protrusion 134 on at least one surface, the graduation protrusion 134 is formed to protrude toward the angle display unit 124 when rotating the rotating body 130 The angle at which the rotating body 130 is rotated can be easily checked with the naked eye.

Meanwhile, a plurality of curved concave portions 140 are formed in one of the rotating body 130 and the coupling hole 122 described above, and the concave-convex portion 142 corresponding to the concave groove 140 is formed in the other. I can. That is, when the concave portion 140 is formed in the rotating body 130, the concave-convex portion 142 may be formed in the coupling hole 122. Conversely, when the concave portion 140 is formed in the coupling hole 122, the rotating body As a form in which the concave-convex portion 142 may be formed in the 130, the concave-convex portion 142 rotates according to the rotation of the rotating body 130 and reaches the concave-groove 140 when the concave-convex portion 140 ) And can form a bond.

The shoe width adjustment bar 150 may have both ends inserted into the insertion grooves 132 of the rotating body 130 provided in each of the pair of shoes to connect the pair of shoes 110. In addition, the shoe width adjustment bar 150 may have long holes 152 forming a length in the longitudinal direction at both ends. Here, in the drawing, two long holes 152 are respectively formed at both ends to be provided, but are not necessarily limited and may be formed to be connected to each other.

In addition, the shoe width adjustment bar 150 may be fixed in a state inserted into the insertion groove 132 by a fixing bolt 154 passing through the long hole 152. Here, since the shoe width adjustment bar 150 is provided with a moving space as much as the length of the long hole 152 starting from the fixing bolt, and forms a structure connected to the shoes 110 by the fixing bolt 154, the shoe width adjustment bar 150 may be lateral movement, and when lateral movement, may be formed to adjust the width between a pair of shoes 110.

In addition, the shoe width adjustment bar 150 may have a length display unit 156 formed along the length of the long hole 152, and the movement length of the shoe width adjustment bar 150 can be visually checked through the length display unit 156. The width can be adjusted easily.

In addition, the shoe width adjustment bar 150 may form a plurality of curved concave and convex portions 158 on the inner circumferential surface of the long hole 152. The plurality of curved concave and convex portions 158 correspond to the fixing bolts 154 penetrating the long holes 152 when the shoe width adjustment bar 150 is laterally moved to adjust the width of the shoes 110. It can help to build a bond.

In addition, the shoe width adjustment bar 150 may be made of aluminum so as to exhibit a non-magnetic material and not impair the uniformity of the magnetic field.

In the assisting device for hip pronation according to the first embodiment as described above, after adjusting the width of a pair of shoes according to the body of the subject wearing the shoes 110 through the shoe width adjusting bar 150, the rotating body ( 130) can be rotated according to an angle of 15° and used to maintain this state, enabling accurate diagnosis of MRI measurements of femoral acetabular impingement syndrome that must accurately maintain 15° pronation for 30 to 40 minutes. .

On the other hand, the assistive device 100 for hip pronation according to the first embodiment of the present invention is attached to the rear surface of the shoe 110 to prevent the heel of the subject from contacting the MRI examination table during the MRI examination. An auxiliary device 160 may be further included.

6 is a configuration diagram of a ground seating aid that is additionally configured to the assisting device for hip joint pronation of FIG. 1, and FIG. 7 is an exemplary view of the use of the ground seating aid of FIG. 6.

6 and 7, the ground seating assistance device 160 is generally manufactured to fit a heel portion in which the rear surface of the shoe 110 is curved, so that when it contacts the MRI examination table, the heel portion is a shoe ( It may be configured to include a mounting plate 162 and a ground mounting member 164 as a means for preventing the occurrence of pain in the contact area during a long time by being seated in point contact with the MRI examination table through 110).

Specifically, the mounting plate 162 may be coupled to the rear surface of the shoe 110. That is, the mounting plate 162 may have the same or similar curved shape as the rear surface of the shoe 110. Here, the mounting plate 162 is formed of a flexible material, and is formed in a flat shape when manufactured, but may be formed to be bent when coupled to the rear surface of the shoe 110. This has the advantage of good ease of manufacture and ease of storage.

In addition, the mounting plate 162 may provide a moving groove 1621 in which a rail 1622 having a length is formed along the lengthwise direction, that is, the rear surface of the shoe 110. That is, the side cross-section of the mounting plate 162 may be in the form of forming an open space of a'ㅏ' type.

The ground seating member 164 may form a curved surface at the front and a flat surface at the rear. In addition, it may be mounted in the moving groove 1621 so that the front surface faces the rear surface of the shoes 110. At this time, the ground mounting member 164 may have a moving protrusion 1641, and the moving protrusion 1641 may allow the rail 1622 to be inserted when the ground mounting member 164 is mounted on the rail 1622. . The moving protrusion 1641 prevents the separation of the ground mounting member 164 from the moving groove 1621 and can be guided along the rail 1622, so that the ground mounting member 164 is located on the rear surface of the shoes 110 It may be formed to rotate along the length of the moving groove 1621 forming a curved length due to the mounting plate 162 mounted to be curved.

The ground seating aid 160 having such a structure allows the rear surface of the ground seating member 164 formed as a flat surface to be aligned with the MRI examination table MT even when adjusting the angle of the shoes 110 for hip pronation. Thus, there is an advantage that the subject can have comfort even during a long time examination.

Here, the ground seating member 164 may form a shock absorbing layer or a protruding layer 1642 on the rear side, and when the shock absorbing layer is provided, the impact on the support portion is minimized, so that the heel portion can be more comfortable without pain, If a protrusion layer is provided, slipping of the MRI examination table can be prevented.

In addition, although not shown in the drawings, a shock absorbing layer or the like is provided on the front surface of the ground mounting member 164 to minimize the impact applied to the heel.

FIG. 8 is a perspective view of an assistive device for hip pronation during an MRI examination for diagnosing a femoral acetabular impingement syndrome according to a second embodiment of the present invention, and FIG. 9 is a bottom perspective view as viewed by projecting the assisting device for hip pronation of FIG. 8 And FIG. 10 is a projection view as viewed from the rear of the assisting device for hip pronation of FIG. 8.

In addition, (a) of FIG. 11 is a diagram illustrating a state of fixing the rotational position between the fixing protrusion and the fixing hole, which is a configuration of the auxiliary device for pronation of the hip joint of FIG. 8, and (b) is a shoe in the state of FIG. It is a diagram illustrating a change in the position between the fixing protrusion and the fixing hole when the shoe width is adjusted through the width adjustment bar.

8 to 11, the auxiliary device 200 for pronation of the hip joint according to the second embodiment of the present invention includes a shoe 210, a fixed plate 220, a shoe width adjustment bar 230, and a separation prevention It may include a stopper 250. Here, in the auxiliary device 200 for pronation of the hip joint according to the second embodiment, the coupling position and the coupling form of the shoe width adjustment bar 230 are differently formed, and structural deformation is made according to this, and the separation preventing stopper 250 Except that is further provided, the functional context with the assisting device 100 for pronation of the hip joint according to the first embodiment may be the same.

That is, the material of the shoes 210, the fixed plate 220, and the shoe width adjustment bar 230, or a width adjustment function and a rotation function of the shoes 210 through them may all be the same as in the first embodiment. Therefore, hereinafter, the portion that is different from the assistive device 100 for hip joint pronation according to the first embodiment will be mainly described, but the first embodiment contains a description of the first embodiment and has not been described. It is not that the functions described in are not implemented.

Specifically, the shoes 210 may be formed of a non-magnetic material to surround both feet, and a shoe fixture 212 for fixing may be provided.

The fixing plate 220 may be fixed to the bottom of each of the pair of shoes 210. Here, the fixing plate 220 may be provided with a rotation guide groove 222. The rotation guide groove 222 is a space in which the shoe width adjustment bar 230 is inserted, and it is irrelevant that only one side of the shoe 210 in the inner side direction is opened, but preferably both sides may be opened. This is because the movement radius of the shoe width adjustment bar 230 is not limited, so that the width of the shoes 210 can be easily adjusted.

Both ends of the shoe width adjustment bar 230 may be inserted into the fixing plate 220 to connect a pair of shoes 210. In addition, both ends may be hooked to the rotation shaft 226 protruding upward from the center of the fixing body 224 fixed inside the fixing plate 220. That is, unlike the first embodiment, which rotates through the rotation body 130, in the second embodiment, the fixing body 224 from which the rotation shaft 226 protrudes is fixed inside the fixing plate 220, and the shoe width The adjustment bar 230 has a structure that can be rotated by being hooked on the rotation shaft 226.

Here, the locking hole 232 formed in the shoe width adjustment bar 230 to be caught on the rotation shaft 226 may be formed in the form of a long hole to be laterally moved. Such a structure is a structure in which the rotation and width of the shoes 210 can be adjusted, but components for rotation and width adjustment are not exposed to the bottom of the shoes 210, thereby forming a comfortable structure for the shoes 210 to be seated on the ground. can do.

The separation preventing stopper 250 may be coupled to the upper end of the rotation shaft 226 to prevent the shoe width adjustment bar 230 from being separated from the upper side. That is, the separation prevention stopper 250 may be connected to the rotation shaft 226 to rotate as one body, where at least one of the fixture 224 and the separation prevention stopper 250 has a shoe width adjustment bar 230 direction The fixing protrusions 260 protruding to are formed, and a plurality of fixing holes 262 spaced apart at predetermined intervals along the rotation radius of the fixing protrusion 260 are formed in the shoe width adjustment bar 230, and a plurality of fixing holes The 262 may be formed to be patterned along the length of the shoe width adjustment bar 230.

This is to fix the rotation position by forming a binding force between the fixing protrusion 260 and the fixing hole 262, and the fixing hole 262 is patterned along the length of the shoe width adjustment bar 230, as shown in FIG. As described above, even when the width of the shoe 210 is adjusted, the fixing protrusion 260 moves to the patterned fixing hole 262 on the side and rotates along the radius of the patterned fixing hole 262 to fix the rotation position. Can be.

On the other hand, it is preferable that the fixing protrusion 260 is formed so that its end is bent so that it can be easily moved to the side.

In addition, a plurality of curved concave or convex portions 240 may be formed on the inner circumferential surface of the locking hole 232. For the same reason as in the first embodiment, the rotation shaft 226 and the concave or convex portion 240 of the locking hole 232 correspond to each other to form a binding force and fix the width adjustment position when adjusting the width.

In addition, a length display portion 270 may be formed on the shoe width adjustment bar 230, and an angle display portion 280 is formed on the shoe 210 in which the rotation is made, so that it is possible to easily adjust the length and angle with the naked eye. .

FIG. 12 is a perspective view of an auxiliary device for hip pronation during an MRI examination for diagnosing femoral acetabular impingement syndrome according to a third embodiment of the present invention, and FIG. 13 is an MRI examination table and a pedestal for an auxiliary device for hip pronation of FIG. It is a view viewed from the front after removing the.

Referring to FIGS. 12 and 13, the assisting device 300 for pronation of the hip joint according to the third embodiment of the present invention may include a pedestal 310, a rotating member 320, and a connection part 330.

Specifically, the pedestal 310 may be mounted on the MRI examination table MT, and may be formed as one body or may be provided with two on both sides. Here, a space for rotating the rotating member 320 to be described later may be provided at the top of the pedestal 310.

The rotating member 320 is a means for supporting the subject's feet, and two may be provided on the pedestal 310 so as to be rotatable left and right. In addition, the rotating member 320 may be provided with an air tube (not shown) that can be expanded or contracted by the operation of the air compressor on the inner surface. The air tube may expand or contract according to the area of the subject's leg to strengthen the fixing force.

The connecting part 330 may connect the rotating member 320 so that the rotation of the two rotating members 320 is operated together. In addition, the connection part 330 may be formed to be controlled manually or automatically. To this end, the connection part 330 may include a power transmission member 331 and first to fourth bevel gears 332 to 335.

Specifically, the power transmission member 331 may be configured as a motor or a handle as a means for generating power to rotate the rotating member 320. Here, when the power transmission member 331 is provided as a motor, the rotation member 320 may be automatically controlled, and when provided as a handle, the rotation member 320 may be manually controlled.

The first bevel gear 332 may be axially connected to the power transmission member 331 to rotate.

The second bevel gear 333 may be engaged with both sides of the first bevel gear 332 to receive rotational force. Here, the second bevel gear 333 may rotate in different directions when the first bevel gear 332 rotates in one direction due to the structure of being meshed with one first bevel gear 332.

The third bevel gear 334 may be axially connected to each of the second bevel gears 333 to receive rotational force. Here, the third bevel gear 334 is axially connected to the second bevel gear 333 so that the teeth are not symmetrically arranged so that the two rotating members 320 rotate in different directions for pronation, but the teeth are arranged in the same direction. I can.

The fourth bevel gear 335 may be engaged with the third bevel gear 334 and may be axially connected to the rotating member 320.

Through this, the rotational force is transmitted through each bevel gear and shaft during automatic control through a motor or manual control through a handle, and the rotating member 320 rotates.

Here, the rotating member 320 rotates in opposite directions due to the structure in which the second bevel gear 333 rotates in different directions, through which the angle of inversion or abduction can be controlled.

In the case of a motor that generates power for automatic control, it may be linked to a mobile phone, etc., and remote control may be possible, thereby minimizing exposure of the subject to electromagnetic waves.

In addition, although not shown in the rotating member 320, a hook coupling portion may be provided, and after mounting the shoes with a hook, the testee attaches the shoes through the hook coupling portion, so that the hip joint pronation is fixed to the rotating member 320. It can be done.

Hereinafter, the following experimental examples are presented to examine the effects of the assistive devices for hip pronation described above, but the following experimental examples are for illustrative purposes only, and the present invention is not limited to the following experimental examples.

[ Experimental example ] Experiment of effects of assistive devices for hip pronation according to an embodiment of the present invention

1. Period and Target

From March 2018 to November 2018, 32 patients (male:18, female:14, average age: 46.7 years) who visited Chonbuk National University Hospital and underwent MRI because they were suspected of hip impingement syndrome lesions. As a result, an MRI test was performed using the assistive device for hip pronation according to the first embodiment of the present invention.

2. Research equipment

Magnetom Skyra 3.0T (Siemens Healthineers, Erlangen, Germany), 18 Channel Body array coil, and 32 Channel Spine array coil were used as MRI equipment, and the angle measurement function was used in the PACS (Marotech Marosis view version 5.3 Republic of Korea) program. Was used.

3. Image acquisition and scan parameters

In order to diagnose FAI, indirect MRA images were acquired 10 minutes after contrast injection. The 3D trufi sequence image parameters examined by oblique sagittal method are FOV 230 x 230 mm ² , TR 5.63 ms, TE 2.45 ms, NEX 1, FA 30 degree, Slice thickness 1 mm, resolution 0.4 x 0.4 x 1 mm And the acquisition time was 3 minutes and 6 seconds. The image parameters of the Proton Density fat removal technique examined by the inclined plane method were obtained as FOV 170 x 170mm ² , TR 1890ms, TE 27ms, NEX 2, FA 135 degree, Slice thickness 2.5mm, resolution 0.5 x 0.5 x 2.5mm. And the acquisition time was 3 minutes and 45 seconds.

4. Video evaluation method

end. Video analysis

14 to 16, quantitative analysis is performed at 6 o'clock in which the hip joint transverse ligament is observed after obtaining a 3D trufi inclined sagittal image after the use of the assistive device and a 3D trufi inclined sagittal image before and after the use of the assistive device. After reconstructing the clock face, which shows the superior at 12 o'clock, the front of the labrum at 3 o'clock, and the opposite side at 9 o'clock, select the reconstructed image at 3 o'clock that best represents the alpha angle. The alpha angle, which is a measure of the causal relationship of the femoral acetabular impingement syndrome, was measured.

The alpha angle is defined by the line passing through the dividing point of the center of the femoral head and the narrowest part of the femoral neck, and the point where the femoral head protrudes forward from the circle when a circle is accurately set on the femoral head and the line connecting the center of the femoral head. The angle was measured.

Referring to FIG. 17 , the qualitative analysis was performed by one orthopedic hip specialist and one radiologist and a musculoskeletal specialist using the Proton Density oblique axial image examined by the fat-scavenging technique before and after the use of the assistive device. After observing acetabular labrum, anterior articular cartilage, and posterior articular cartilage, it was evaluated on a Likert scale 5-point scale of 5 excellent, 4 good, 3 fair, 2 lack, and 1 poor.

Both quantitative and qualitative analysis were analyzed retrospectively through PACS (Maroview image viewer, Marotech Inc. Seoul, Korea).

I. Statistical analysis

Statistical analysis was performed using statistical software SPSS 21.0 (SPSS Inc. Chicago, IL USA), and the alpha angle of the quantitative analysis and the score of the qualitative analysis were verified with a paired T-test, and the significance level was when the P value was 0.05 or less. It was considered statistically significant. Concordance verification for the reliability between the two evaluators of the qualitative analysis was evaluated at Cohen's weighted Kappa 95% confidence interval using MedC (MedCalc software version 13.0.0.0).

5. Results

end. Quantitative Analysis

Referring to [Table 1] and [Table 2], the image in the direction of the Proton Density (PD) inclination axis examined by the fat removal technique before and after the use of the auxiliary device and the 3D trufi inclined sagittal plane image after the use of the auxiliary device are displayed in the direction of 3 o'clock. The alpha angle was measured from the reconstructed clock face image. The results of comparing and analyzing the difference between the values measured in the images before and after using the assistive device from the values measured in the clock face image were found to be statistically significant. (P<0.05)

<According to the MRI image before and after using the auxiliary device Alpha angle Measurement result>

<Results of statistical analysis of MRI images before and after using auxiliary devices>

2. Qualitative Analysis

Referring to [Table 3], the result of the Likert scale for the qualitative evaluation of one orthopedic hip specialist and one radiologist and musculoskeletal specialist, the average value of anterior acetabular labrum (AAL) observation before using the assistive device was 2.78±0.74 , After using the assistive device, the average value was 3.68±0.9, which was statistically significant (P<0.024).

There was little difference between the two assessors in the observation of anterior articular cartilage (AAC). The average value before using the assistive device was 4.53±0.51, and the average value after using the assistive device was 4.39±0.8, which was not statistically significant (P<0.103). )

The observation of posterior articular cartilage (PAC) also showed little difference between the two evaluators. The average value before using the assistive device was 4.37±0.47 and the average value after using the assistive device was 4.36±0.7, which was not statistically significant (P. <0.232)

The average value of posterior acetabular labrum (PAL) before use was 3.56±0.94, and the average value after using the assistive device was 4.51±0.63, which was statistically significant (P<0.005).

<Average score of evaluator>

As a result of verifying the consistency using Cohen's weighted Kappa, the K value before using the anterior acetabular labrum aid was 0.668 and the K value after use was 0.674.The K value before using the posterior acetabular labrum aid was 0.864, and the K value after using the posterior acetabular labrum aid. It was 0.856.

Both the anterior articular cartilage and the posterior articular cartilage showed high reliability as K values of 1. As a result of evaluating the degree of agreement between the evaluation items, high reliability was shown between the two evaluators.

100: Assistive device for hip pronation according to the first embodiment
110: shoes 112: shoe fixture
114: guide groove 1142: locking part
120: fixing plate 122: coupling
124: angle display unit 130: rotating body
132: insertion groove 134: graduation protrusion
140: concave portion 142: uneven portion
150: shoe width adjustment bar 152: long hole
154: fixing bolt 156: length display
158: concave or convex portion 160: ground seating aid
162: mounting plate 1621: moving groove
1622: rail 164: ground seating member
1641: moving protrusion 1642: impact absorbing layer or protrusion layer
200: Assistive device for hip pronation according to the second embodiment
210: shoes 212: shoe fixture
220: fixed plate 222: rotation guide groove
224: fixture 226: rotating shaft
230: shoe width adjustment bar 232: locking hole
240: concave or concave-convex part 250: separation prevention stopper
260: fixing protrusion 262: fixing hole
270: length display 280: angle display
300: Assistive device for hip pronation according to the third embodiment
310: pedestal 320: rotating member
330: connection part 331: power transmission member
332: first bevel gear 333: second bevel gear
334: third bevel gear 335: fourth bevel gear

Claims (9)

A pair of shoes wrapped around both feet and formed of a non-magnetic material;
A fixing plate fixed to the bottom of each of the pair of shoes;
A rotating body coupled to the coupling hole of the fixed plate and formed to be rotatable, and having an insertion groove forming a side length at the lower end thereof, and
Both ends are inserted into each insertion groove to connect a pair of shoes, and a long hole forming a length in the longitudinal direction is provided at both ends, and the lateral movement is possible in a state fastened to the rotating body by a fixing bolt penetrating the long hole. Assistive device for hip pronation during MRI examination for diagnosing femoral acetabular impingement syndrome including shoe width adjustment bar.
The method of claim 1,
An angle display portion is formed on the fixed plate,
The rotating body is an auxiliary device for hip pronation during MRI examination for diagnosing femoral acetabular collision syndrome, characterized in that a graduation protrusion protruding toward the angle display is provided.
The method of claim 1,
An auxiliary device for hip pronation during MRI examination for diagnosing femoral acetabular impingement syndrome, wherein the long hole has a length indicator.
The method of claim 1,
Further comprising a ground seating assistance device coupled to the rear surface of the shoe to prevent the heel portion of the subject from contacting the MRI examination table during the MRI examination,
The ground seating assistance device,
A mounting plate coupled to the rear surface of the shoe and providing a moving groove having a rail having a length along the rear surface of the shoe, and
The front forms a curved surface and the back forms a flat surface so that the front faces the rear of the shoe, and is mounted in the moving groove, and a moving protrusion is provided so that the moving protrusion is inserted into the rail, and is mounted in the moving groove along the length of the moving groove. An auxiliary device for hip pronation during MRI examination for diagnosing femoral acetabular impact syndrome, including a ground seat member formed to be rotated.
The method of claim 4,
The ground seating member,
An auxiliary device for hip pronation during MRI examination for diagnosing femoral acetabular impact syndrome, characterized in that a shock absorbing layer or a protrusion layer is formed on the rear surface.
The method of claim 1,
Assist for hip pronation during MRI examination for diagnosing femoral acetabulum impact syndrome, characterized in that a plurality of curved grooves are formed in one of the rotating body and the coupling hole, and irregularities corresponding to the grooves are formed in the other Device.
The method of claim 1,
An auxiliary device for hip pronation during MRI examination for diagnosing femoral acetabular collision syndrome, characterized in that a plurality of curved concave grooves or convex portions are formed on the inner circumferential surface of the long hole.
A pair of shoes wrapped around both feet and formed of a non-magnetic material;
A fixing plate fixed to the bottom of each of the pair of shoes;
Both ends are inserted into the fixed plate to connect a pair of shoes, and both ends are formed to be rotatable by being hooked on a rotating shaft protruding upward from the center of a fixed body fixed inside the fixed plate. A shoe width adjustment bar formed to enable lateral movement along the length of the shaped locking hole and
It includes a separation preventing stopper coupled to the upper end of the rotation shaft to prevent the upper side of the shoe width adjustment bar,
At least one of the fixing body and the separation preventing stopper is formed with a fixing protrusion protruding in the direction of the shoe width adjustment bar, and a plurality of fixing holes spaced apart at predetermined intervals along the rotation radius of the fixing protrusion are formed in the shoe width adjustment bar. However, the plurality of fixing holes are patterned along the length of the shoe width adjustment bar,
A plurality of curved concave grooves or concave-convex portions are formed on the inner circumferential surface of the locking hole,
A length display portion is formed on the shoe width adjustment bar,
An auxiliary device for hip pronation during MRI examination for diagnosing femoral acetabular impingement syndrome, characterized in that the shoe has an angle indicator formed thereon.
A pedestal mounted on the MRI examination table;
Two rotating members mounted to be rotatable left and right on the pedestal and
It includes a connecting part that connects the rotating members so that the rotation of the two rotating members is operated together and is controlled manually or automatically,
The connection part,
A power transmission member composed of a motor or a handle to generate rotational force to the left and right;
A first bevel gear axially connected to the power transmission member to rotate;
Second bevel gears engaged with both sides of the first bevel gear;
A third bevel gear axially connected to the second bevel gear, and
An auxiliary device for hip pronation during MRI examination for diagnosing femoral acetabular impact syndrome, including a fourth bevel gear engaged with the third bevel gear and axially connected to the rotating member.

Images