JP2012185226A - Distal radius fracture reduction training model - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a distal radius fracture reduction training model which enables a trainee to practice flexion reduction maneuver by reproducing overriding displacement and makes him or her feel a friction sound to be able to reproduce an operational feeling in actual manipulative reduction approximately.SOLUTION: The distal radius fracture reduction training model includes: concave and convex engagement parts 5 and 6 formed at three positions on surfaces facing each other of outer peripheral parts 2A and 3A of a proximal radial fragment model body 2 and a distal radial fragment model body 3; and an elastic body 9 which elastically urges the proximal radial fragment model body 2 and the distal radial fragment model body 3 toward each other in a reduction completion state where the concave and convex engagement parts 5 and 6 are engaged with each other. In order to avoid interference with the elastic body 9 between a state where the distal radial fragment model body 3 is displaced by overriding the back side of the proximal radial fragment model body 2 and the reduction completion state, clearance grooves 2C and 3C are formed on the back side of the proximal distal radial fragment model body 2 and a palm side of the distal radial fragment model body 3.

Description

  The present invention relates to a model used for reduction training for acquiring reduction techniques for distal radius fractures.

Judo reduction is a technique that does not require surgery for fractures, dislocations, sprains, contusions, and bruises caused by acute and subacute causes such as bones, joints, muscles, tendons, and ligaments. This is a treatment that performs reduction, fixation, post-treatment, etc. When a judo reduction teacher examines or treats the affected area, it requires a high degree of fingertip sensation with all nerves concentrated on the fingertip.
In order to become a judo remediator who needs to acquire such advanced fingertip sensation, it is necessary to study and practice at vocational schools, etc. Therefore, it is desired to spread reduction training models (human body model teaching materials) for learning reduction techniques (see, for example, Patent Document 1).

In addition, the distal end of the rib is a part of cancellous bone with a sparsely arranged thin plate of bone (bone crest) that forms a mesh, and it is widely used when falling with a palm or riding a bicycle or motorcycle Distal radius fractures occur across the age group, and the incidence is high.
As a reduction training model (human body model teaching material for acquiring reduction technique) for learning such reduction technique of distal radius fracture, the rib of the bone-shaped member is made of metal (ferromagnetic material) And a rib proximal end member provided with a magnet on the side adjacent to the rib distal end member, and the separation surface is made into a triangle or a semicircle having a rounded apex, and the bone-like member is soft Some are covered with a member (see Patent Document 1).

Registered Utility Model No. 3144317

In the configuration of the distal radius fracture reduction training model as in Patent Document 1, the distal radius end member and the proximal radius end member are merely displaced while maintaining a magnetically attracted state without being separated, It is impossible to reproduce the state where the distal radius fragment is mounted on the dorsal side of the proximal radius fragment and deformed into a fork spine shape. Cannot practice flexion reduction to reduce fractures.
In addition, since the distal end member of the radius and the proximal end member of the radius are slid while maintaining a magnetically attracted state, it is impossible to feel the stuttering that is one of the inherent symptoms of fractures. Therefore, it is impossible to reproduce an operational feeling that is close to actual manual reduction, and therefore it is impossible to acquire a high-level fingertip sensation.

  Therefore, in view of the above-mentioned situation, the present invention intends to solve the problem of riding reduction by reproducing the bending reduction method, and making the operation feel close to actual manual reduction by tactile roaring. It is in providing a training model for fracture reduction of the distal radius that can be reproduced.

  In order to solve the above problems, the distal radius fracture reduction training model according to the present invention has a proximal radius bone fragment and a portion corresponding to a fracture portion of the distal radius bone fragment formed in the distal radius fracture. A model used for reduction training for learning a reduction technique of a distal radius fracture, comprising a proximal radius bone mimetic and a distal radius bone mimetic, the proximal radius bone mimetic and An uneven engagement portion formed at at least three locations on the outer peripheral portion facing surface between the distal radius bone simulated bodies, and the reduced proximal bone fragment simulated body in a reduced state where the uneven engagement portions are engaged, An elastic body that elastically biases the distal radial bone fragment simulated body in a direction in which the distal radial bone simulated body approaches, and the distal distal bone fragment simulated body is mounted on the dorsal side of the proximal proximal bone fragment simulated body; In order to prevent interference with the elastic body during the reduction completion state, And characterized by comprising a groove relief to at least one of the palm side of the distal radius bone fragment mimics.

According to such a configuration, the elastic body that elastically biases the proximal radial bone fragment simulated body and the distal radial bone fragment simulated body in the approaching direction in the reduction completed state in which the uneven engagement portion is engaged. Therefore, the operating force for reducing the distal radius fracture is reproduced mainly by the restoring force of the elastic body.
In addition, since there are concave and convex engaging portions at at least three locations on the outer periphery facing surface between the proximal radius bone simulated body and the distal radial bone simulated body, noise is generated by the concave and convex engagement during the reduction operation. Because it can be palpated, it can reproduce a feeling of operation close to actual manual reduction, and in the state where the concavo-convex engaging portions at at least three locations on the outer peripheral portion facing surface are engaged, Since the body and the rib distal bone fragment simulated body are positioned without rattling in the direction in which the bone axis (long axis) falls down, the reduction completion state can be felt.
Furthermore, a clearance groove is formed in at least one of the dorsal side of the proximal radius bone mimetic and the palm side of the distal radius bone mimetic, and the distal radius bone mimetic is the proximal radius bone. Since the elastic body does not interfere with the elastic body between the state where it is mounted on the dorsal side of the simulated body and the reduction completed state, the distal bone fragment is mounted on the dorsal side of the proximal bone fragment and becomes a fork dorsal shape. Since the deformed state can be reproduced, it is possible to practice a bending reduction method for reducing a distal radius fracture with such a large dislocation.
In addition, the proximal radius fragment mimetic and the distal radius bone mimetic in which the portions corresponding to the proximal radius fragment and the fractured portion of the distal radius fragment in the distal radius fracture are respectively formed, and these With a simple configuration made of an elastic body or the like that is elastically biased, the manufacturing cost can be reduced and reliability suitable for repeated use can be ensured.

Here, it is preferable that a concave-convex engaging portion is formed on the opposite surface of the central portion between the rib proximal bone fragment simulated body and the distal radius distal bone fragment simulated body.
According to such a configuration, since there is an uneven engagement portion between the central portion of the rib proximal bone fragment simulated body and the distal radius distal bone fragment simulated body, the uneven engagement portion is also uneven during the reduction operation. Because of the engagement, it is possible to reproduce a more realistic noise and operation feeling.

Moreover, it is preferable that the longitudinal direction of the elastic body is inclined toward the heel as it goes in the proximal direction.
According to such a configuration, the state where the distal radius bone simulated body is mounted on the dorsal side of the proximal radius bone simulated body is closer to the actual state, and the operation force when performing the reduction operation is more actual. It will be close to.

Furthermore, it is preferable that a tension adjusting means for adjusting the tension of the elastic body is provided.
According to such a configuration, by operating the tension adjusting means, it is possible to easily perform adjustments performed by an expert in order to reproduce an operational feeling close to actual manual reduction, and to produce a large number of manufactured ribs. It is possible to reduce the variation in operational feeling during the reduction training in the distal fracture fracture training model.

Furthermore, it is preferable that the elastic body is a tension coil spring and the tension adjusting means is a turnbuckle.
According to such a configuration, since the elastic body and the tension adjusting means are configured by the tension coil spring and the turnbuckle that have a simple configuration and are reliable in operation for a long period of time and are inexpensive, further reduction in manufacturing cost is achieved. And high reliability, and the tension of the tension coil spring can be easily adjusted by rotating the body portion of the turnbuckle.

Further, it is preferable that at least a portion corresponding to the fracture portion of the proximal radius bone simulated body and the distal radius bone simulated body is covered with a soft material simulating a soft tissue.
According to such a configuration, since the periphery of the portion corresponding to the fracture portion is covered with the soft material simulating the soft tissue, the actual distal radius fracture when the state corresponding to the distal radius fracture is achieved. If the soft material is opaque, make sure that the reduction can be done without seeing the inside. This is suitable for reduction training.
In addition, a distal radius fracture reduction training model with a soft material formed of a transparent soft synthetic resin material covering the area corresponding to the fractured portion is also prepared, so that the distal radius fracture can be reduced before and after reduction. Since the situation can be visually confirmed, reduction training can be carried out more efficiently.

Furthermore, it is preferable that a rotary joint is provided at the proximal end of the rib proximal bone fragment simulated body.
According to such a configuration, the angle around the major axis of the distal radius fracture reduction training model can be freely changed by the rotary joint at the proximal end portion of the proximal radius fragment simulated body, so that reduction is performed. It is possible to perform reduction training while reproducing a state close to the actual posture of the arm.

Furthermore, the above-mentioned proximal rib radial bone simulated body is attached to an arm proximal part model imitating from the upper arm to the proximal part of the forearm as a length corresponding to the middle part of the rib to form an arm model, and the arm model It is preferable that a rotation joint is provided on the body and that the arm model is provided with a mounting means for mounting the arm model on the human body or the human body model.
According to such a configuration, the actual posture of the injured person to be reduced and the operator and the assistant who perform reduction by the distal radius fracture reduction training model close to the arm of the person attached to the human body or the human body model by the wearing means. Can reproduce the actual behavior of

  As described above, according to the distal radius fracture reduction training model according to the present invention, a simple and reliable operation reproduces a state close to the actual situation of a distal radius fracture with a large dislocation. It is possible to reproduce the operational feeling close to the actual situation at the time, reduce the manufacturing cost, and ensure the reliability suitable for repeated use. Play.

It is a front view which shows the state which mounted | wore the person with the radius radius fracture reduction training model which concerns on embodiment of this invention. It is a fragmentary longitudinal cross-section perspective view which shows the state which the reduction in the radius radius fracture reduction training model which concerns on embodiment of this invention was completed. It is the fragmentary longitudinal cross-sectional view similarly seen from the back side. It is a fragmentary longitudinal cross-section perspective view which shows the state where the distal radius bone simulated body in the distal radius fracture reduction training model according to the embodiment of the present invention is mounted on the dorsal side of the proximal radial bone fragment simulated body. It is a partial longitudinal cross-section exploded perspective view of the model. It is the fragmentary longitudinal cross-sectional view seen from the heel side which shows the state which the rib distal bone fragment simulation body in the same model carried on the dorsal side of the rib proximal bone fragment simulation body. It is the partial longitudinal cross-section seen from the heel side which shows the state which reduction was completed in the model. (A) is a longitudinal cross-sectional view showing an enlarged concavo-convex engagement portion on the outer periphery of the proximal radius bone simulated body and distal radius bone simulated body, and (b) is a proximal proximal bone fragment simulated body and distal radius. It is a longitudinal cross-section which expands and shows the uneven | corrugated engaging part of the center part of a bone fragment simulated body.

As shown in FIG. 1, a distal radius fracture reduction training model (hereinafter simply referred to as “training model”) 1 according to an embodiment of the present invention is manufactured by imitating from a hand H to a part of a forearm. Therefore, there is no length of the entire forearm, and the arm proximal part model A1 simulating from the upper arm to the proximal part of the forearm can be rotated around a substantially bone axis (long axis) by a rotary joint (turn pair) 11 The arm model A is attached to the arm model A, and the arm model A can be used by being mounted on a human body or the like by a mounting band B which is a mounting means.
Further, the entire arm model A is covered with a soft material C which is formed of a soft synthetic resin material such as silicone rubber or urethane rubber, and imitates soft tissues such as skin, subcutaneous tissue and muscle.

The forearm is composed of a radius and an ulna, but as shown in FIGS. 2 to 7, to simplify the training model 1, the ulna is lost, and the distal end of the radius is a normal proximal proximal bone fragment and radius. The proximal model bone is formed larger than the distal bone fragment, and the training model 1 includes a proximal radius bone fracture and a portion corresponding to a fracture portion of the distal radius bone fracture in the distal radius fracture. A piece mockup 2 and a distal radius bone mockup 3 are provided.
In addition, there are three engaging convex portions 5,... On the outer peripheral portion 2A (see FIG. 5) of the proximal radius bone simulated body 2 and the outer peripheral portion 3A (see FIGS. 4 and 4) of the distal radius bone simulated body 3. Engaging recesses 6,... That engage with the engaging projections 5,... Are formed at three locations in FIG. 5), and are formed in the central portion 2B (see FIG. 5) of the proximal rib fragment simulated body 2. The engaging convex part 7 is formed, and an engaging concave part 8 that engages with the engaging convex part 7 is formed in the central part 3B (see FIGS. 4 and 5) of the distal radius bone simulated body 3. FIG. 7 and FIG. 7, the engagement protrusions 5,... And the engagement protrusion 7 engage with the engagement recesses 6,.
That is, concave and convex engagement portions are formed at three opposing surfaces of the outer peripheral portions 2A and 3A (see FIG. 5) between the rib proximal bone fragment simulated body 2 and the distal radius distal bone fragment simulated body 3. An uneven engagement portion is formed at one place on the opposing surface of the central portions 2B, 3B between the simulated piece 2 and the distal radius bone simulated body 3.

As shown in FIG. 8 (a), the engaging recess 6 is a round hole whose diameter decreases, for example, in the distal direction, and the conical inclined surface 6A has, for example, a round-shaft engaging protrusion. In a state where the spherical surface 5A at the tip of the portion 5 is in contact, the concave and convex are engaged and positioned.
Further, as shown in FIG. 8B, the engaging recess 8 is a round hole whose diameter decreases, for example, as it goes in the distal direction, and the conical inclined surface 8A has, for example, a round shaft-like engagement. In the state where the inclined surface 7A at the tip of the joint convex portion 7 is in contact, the concave and convex portions are engaged and positioned.
In addition, as an uneven | corrugated engaging part like these, you may make it form an engagement recessed part in the radial proximal bone fragment simulated body 2, and form an engaging convex part in the distal radius bone simulated body 3. FIG.
Here, it is good also considering the uneven | corrugated engagement part formed in the opposing surface of outer peripheral part 2A, 3A (refer FIG. 5) between the rib proximal bone fragment simulated body 2 and the distal radius bone simulated body 3 as four or more places. If there are three or more concavo-convex engaging portions formed on the opposing surfaces of the outer peripheral portions 2A and 3A, these concavo-convex engaging portions are not in a straight line. It is possible to simulate a state close to the actual reduction completion state without shaking in the direction in which the bone axis (long axis) falls.

Further, as shown in FIG. 2 and FIG. 7, the tension coil which is an elastic body in the reduction complete state where the engagement convex portion 5, the engagement concave portion 6, and the engagement convex portion 7 and the engagement concave portion 8 are engaged. A spring 9 has its proximal end 9A and distal end 9B attached to the center of the proximal radius bone mimetic 2 (the proximal wall of the axially extending hole formed in the engaging projection 7), respectively. Since it is attached by being hooked on the latch pin 10B of the receiving member 4A fixed to the center of the distal hand bone part 4 of the looped string body 10A and the distal radius bone simulated body 3, the tension coil spring 9 Thus, the rib proximal bone fragment simulated body 2 and the radius distal bone fragment simulated body 3 are elastically biased in the direction in which they approach.
Here, as shown in FIG. 3, the longitudinal direction of the tension coil spring 9 is inclined toward the heel side, for example, by about 10 ° to 20 ° as it goes in the proximal direction.

The stroke of the tension coil spring 9 (the amount of change in the extension of the tension coil spring 9) is determined between the state corresponding to the distal radius fracture shown in FIG. 6 and the reduction completion state shown in FIG. No need to replace multiple tension coil springs with different characteristics such as free length and spring constant by changing wire diameter, coil diameter and number of turns, for example, skilled judo reduction teachers such as teachers of judo reduction teacher department of vocational school However, it is only necessary to select the tension coil spring 9 that is close to the actual operating force while operating the training model 1 and confirming the operating force at the time of manual reduction.
Further, the tension coil spring 9 is provided with tension adjusting means by attaching a turn buckle in series with the tension coil spring 9 or by changing the position where the end of the tension coil spring 9 is hooked. The tension can be adjusted.
Furthermore, the elastic body is not limited to the tension coil spring, and may be an elastic body such as a rubber tube or a rubber string.

Furthermore, between the reduction completion state shown in FIGS. 2 and 7 and the state where the distal radius bone mimetic 3 shown in FIGS. 4 and 6 is mounted on the back side of the proximal radius bone mimetic 2. In order not to interfere with the tension coil spring 9, a clearance groove 2 </ b> C is formed on the dorsal side of the proximal radius bone simulated body 2, and a clearance groove 3 </ b> C is formed on the palm side 3 of the distal radius bone simulated body 3. .
Such a relief groove is formed so as not to interfere with the elastic body such as the tension coil spring 9 between the reduction completed state and the riding dislocation state. Depending on the shape and the attachment position of the terminal, only one of the relief grooves formed on the dorsal side of the proximal radius bone mimetic 2 and the palm side of the distal radius bone mimetic 3 can be used.

According to the configuration of the training model 1 as described above, the engagement convex portions 5,... And the engagement concave portions 6,... And the engagement convex portions 7 and the engagement concave portions 8 are engaged, and the reduction shown in FIGS. In the completed state, the proximal radius fragment mimic 2 and the distal radius fragment mimic 3 are provided with the tension coil spring 9 that elastically biases them toward the direction in which they approach, so that the distal radius fracture is reduced. The operating force is reproduced mainly by the restoring force of the tension coil spring 9.
Further, since there are concave and convex engaging portions 5 and 6 at at least three locations on the outer peripheral portions 2A and 3A facing surfaces between the rib proximal bone fragment simulated body 2 and the distal radius distal bone fragment simulated body 3, the riding shift of FIG. Since the stuttering can be palpated by the uneven engagement during the reduction operation from the state to the reduction completion state of FIG. 7, the operation feeling close to the actual manual reduction can be reproduced, and the outer peripheral portions 2A and 3A. In a state in which the concave and convex engaging portions at at least three positions on the opposing surface are engaged, the proximal radius bone fragment simulated body 2 and the distal radius bone fragment simulated body 3 shake in the direction in which the bone axis (long axis) falls. Therefore, it is possible to feel the reduction completion state.
In addition, after the reduction training of the distal radius fracture using the training model 1, a fixation training of a clam splint or the like can be performed together with care not to cause rearrangement.

Further, relief grooves 2C and 3C are formed on the dorsal side of the proximal radius bone mimetic 2 and the palm side of the distal radius bone mimetic 3, and the distal radius bone mimetic 3 is the proximal radius bone. Since it does not interfere with the tension coil spring 9 between the state of the cowgirl shift on the dorsal side of the half-simulated body 2 and the reduction completed state, the distal radius fragment is mounted on the dorsal side of the proximal radius fragment and the fork Since the deformed state of the spine can be reproduced, it is possible to practice the bending reduction method of reducing the distal radius fracture with such a large dislocation.
Furthermore, in the distal radius fracture, the proximal radius bone simulated body 2 and the distal radius bone simulated body 3 in which portions corresponding to the proximal radius bone fracture and the fracture portion of the distal radius bone fragment are respectively formed, and With a simple configuration including the tension coil spring 9 that elastically biases them, the manufacturing cost can be reduced, and reliability suitable for repeated use can be ensured.
In addition, there are also concave and convex engaging portions 7 and 8 on the opposite surfaces of the central portions 2B and 3B between the rib proximal bone fragment simulated body 2 and the distal radius distal bone fragment simulated body 3, and the concave and convex engaging portions 7 and 8 are also reduced. Since the concavo-convex engagement is performed during the operation, it is possible to reproduce a more realistic noise and operational feeling.

Further, since the longitudinal direction of the tension coil spring 9 is inclined toward the heel side as it goes in the proximal direction, the distal radius fragment simulated body 3 is mounted on the dorsal side of the proximal radius fragment simulated body 2. The state becomes closer to the actual state, and the operating force for the reduction operation becomes closer to the actual state.
Furthermore, by providing a tension adjusting means for adjusting the tension of the elastic body such as the tension coil spring 9, an adjustment performed by an expert to reproduce the operational feeling close to the actual manual reduction by operating the tension adjusting means. In addition to being easy to perform, it is possible to reduce variations in operational feeling during reduction training in the large number of training models 1,.
Further, when the elastic body is the tension coil spring 9 and the tension adjusting means is a turnbuckle, the elastic body and the tension adjusting means can be easily operated with a simple structure over a long period of time with high operation reliability and low price. In addition, since it is configured by the turnbuckle, the manufacturing cost can be further reduced and the reliability can be improved, and the tension of the tension coil spring 9 can be easily adjusted by rotating the body portion of the turnbuckle. Can do.

Further, at least the portion corresponding to the fracture portion of the proximal radius bone simulated body 2 and the distal radius bone simulated body 3 is covered with a soft material C simulating soft tissue such as skin, subcutaneous tissue and muscle. Then, since the periphery of the portion corresponding to the fracture portion is covered with the soft material C, when the state corresponding to the distal radius fracture shown in FIGS. If the soft material C is opaque, it is required to confirm that the reduction is possible without seeing the inside. It is suitable for reduction training.
Furthermore, together with the training model 1 in which the soft material C is opaque, a training model 1 is also produced in which the portion corresponding to the fracture portion is covered with a soft material C made of a transparent soft synthetic resin material such as highly transparent silicone rubber. Since the soft material C is transparent, the situation before and after reduction of the distal radius fracture can be visually confirmed, and reduction training can be performed more efficiently.
In the configuration in which the proximal proximal bone fragment simulated body 2 and the distal distal bone fragment simulated body 3 are covered with the soft material C, the distal distal bone fragment simulated body 3 shown in FIGS. 4 and 6 is the proximal proximal bone fragment. Since the soft material C is also deformed when it is manually reduced from the state where it is mounted on the back side of the simulated body 2 to the state shown in FIGS. 2 and 7, the soft material C also exerts an operating force.

Further, as shown in FIGS. 2 and 4 to 7, the proximal rib fragment simulated body 2 has a length corresponding to the middle part of the radius, and the disc constituting the rotary joint 11 at the proximal end thereof. 11A, and as shown in FIGS. 6 and 7, the disc 11A is accommodated in a housing 11B constituting the rotary joint 11 at the distal end of the proximal arm model A1, and the arm model A shown in FIG. Then, the arm model A can be attached to the human body (or a human body model) by the attachment band B which is the attachment means.
According to such a configuration, by the training model 1 (arm model A) close to the arm of the person wearing the human body or the human body model with the wearing band B, the actual posture of the injured person to be reduced and the operator performing reduction Reduction exercises such as bending reduction can be performed while reproducing the actual movement of the assistant.
Note that the rotary joint 11 is not limited to the configuration in which the disk 11A is supported by the housing 11B as in the present embodiment, and may be configured using a slide bearing, a ball bearing, or the like. Any structure that can rotate about 180 ° around the (major axis) may be used.
Further, by providing the rotation joint 11 at the proximal end of the proximal rib fragment simulated body 2, the rotation joint 11 can freely change the angle around the long axis of the training model 1, and therefore reduce the rotation. It is possible to perform reduction training while reproducing a state close to the actual posture of the arm.

A Arm model A1 Proximal arm model B Wearing band (wearing means)
C Soft material imitating soft tissue H Hand 1 Distal radius fracture reduction model 2 Radial proximal bone fragment simulated body 2A Outer peripheral part 2B Central part 2C Escape groove 3 Distal radius bone simulated body 3A Outer peripheral part 3B Central part 3C Escape groove 4 Hand bone part 4A Receiving member 5 Engaging convex part 5A Spherical surface 6 Engaging concave part 6A Inclining surface 7 Engaging convex part 7A Inclining surface 8 Engaging concave part 8A Inclining surface 9 Tension coil spring (elastic body)
9A, 9B Terminal 10A Loop-like string body 10B Latching pin 11 Rotating joint (rotating pair)
11A disk 11B housing

Claims (8)

A distal radius including a proximal radius bone mimetic and a distal radius bone mimic in which a portion corresponding to a fracture portion of the proximal radius bone and a distal radius bone fragment in a distal radius fracture is formed It is a model used for reduction training to learn the reduction technique of the distal fracture,
A concavo-convex engagement portion formed in at least three locations on the outer peripheral portion facing surface between the rib proximal bone fragment simulated body and the distal radius fragment simulated body;
An elastic body that elastically urges the proximal proximal bone fragment simulated body and the distal distal bone fragment simulated body in a direction in which the proximal proximal bone fragment simulated body and the distal distal bone fragment simulated body approach each other when the uneven engagement portion is engaged;
The proximal radial bone fragment simulation so that the distal radial bone fragment simulated body does not interfere with the elastic body between the state where it is mounted on the back side of the proximal radial bone fragment simulated body and the reduction complete state A distal radius fracture reduction training model, characterized in that a relief groove is formed on at least one of the back side of the body and the palm side of the simulated distal bone fragment.   The distal radius fracture reduction training model according to claim 1, wherein an uneven engagement portion is formed on a surface opposite to the center between the proximal radius bone simulated body and the distal radius bone simulated body.   The distal radius fracture reduction training model according to claim 1, wherein the longitudinal direction of the elastic body is inclined toward the heel side in the proximal direction.   The distal radius fracture reduction training model according to claim 1, further comprising tension adjusting means for adjusting the tension of the elastic body.   The distal radius fracture reduction training model according to claim 4, wherein the elastic body is a tension coil spring and the tension adjusting means is a turnbuckle.   The distal radius fracture according to claim 1, wherein at least a portion corresponding to the fracture portion of the proximal radius bone simulated body and the distal radius bone simulated body is covered with a soft material simulating a soft tissue. Reduction training model.   The reduced radius fracture training model according to claim 1, wherein a rotational joint is provided at a proximal end of the proximal radius fragment simulated body. The proximal rib fragment simulated body is attached to a proximal arm model simulating from the upper arm to the proximal portion of the forearm as a length corresponding to the middle part of the rib, and is used as an arm model. The distal radius fracture reduction training model according to claim 1, further comprising attachment means for attaching the arm model to a human body or a human body model.

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