CN215459001U - Forearm bone distal prosthesis assembly - Google Patents

Abstract

The utility model provides a forearm bone distal prosthesis component, and relates to the technical field of medical prostheses. The forearm bone far-end prosthesis assembly comprises a radius far-end prosthesis, wherein a radius marking line is arranged on the radius far-end prosthesis and is used for aligning with a bone margin line of a radius reserved bone. According to the forearm distal prosthesis assembly, the radius marking line is arranged on the radius distal prosthesis, when the radius distal prosthesis is implanted, the radius marking line is aligned with the natural physiological limbus line of the reserved bone of the radius, the position of the radius distal prosthesis can be determined quickly and accurately, and accordingly implantation and operation time can be greatly saved. In addition, through setting up radius mark line, the location of radius distal end prosthesis is more accurate, and the implantation precision is higher, is favorable to radius distal end prosthesis and radius to remain the bone and fuse better, and then improves patient's treatment.

Description

Forearm bone distal prosthesis assembly

Technical Field

The utility model relates to the technical field of medical prostheses, in particular to a forearm bone distal prosthesis component.

Background

The forearm bone comprises a radius bone and an ulna bone, wherein one end of the radius bone and the ulna bone close to the hand bone is a far end, and one end close to the upper arm bone is a near end. When a lesion occurs in the radius or ulna, the lesion bone needs to be cut and a prosthesis needs to be implanted. The forearm bone distal prosthesis in the prior art consumes a long time when being implanted, so that the operation time is also long.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an forearm bone distal prosthesis component, which aims to solve the technical problems that the forearm bone distal prosthesis in the prior art consumes longer time when being implanted, so that the operation time is longer.

The forearm bone far-end prosthesis assembly provided by the utility model comprises a radius far-end prosthesis, wherein a radius marking line is arranged on the radius far-end prosthesis and is used for aligning with a bone margin line of a radius reserved bone.

Further, the forearm bone distal prosthesis assembly further comprises an ulna distal prosthesis provided with an ulna marking line for alignment with a limbus line of the ulna retaining bone.

Furthermore, the forearm bone far-end prosthesis assembly further comprises a radius adjusting pad, and the radius adjusting pad comprises a first pad body and a second pad body which are fixedly connected in the length direction of a radius, wherein the first pad body is of a solid structure and is used for being matched and fixedly connected with the near end of the radius far-end prosthesis, and the second pad body is of a porous structure and is used for being matched and fixedly connected with a radius reserved bone;

the forearm bone far-end prosthesis component further comprises an ulna adjusting pad, the ulna adjusting pad comprises a third pad body and a fourth pad body which are fixedly connected along the length direction of the ulna, the third pad body is of a solid structure and is used for being matched and fixedly connected with the near end of the ulna far-end prosthesis, and the fourth pad body is of a porous structure and is used for being matched and fixedly connected with the ulna retaining bone.

Further, the radius adjusting pad and the ulna adjusting pad both have two specifications of 5mm thick and 10mm thick, and in the radius adjusting pad of the two specifications, the thickness of the second pad body is 2.5 mm; in the ulna adjusting pads of the two specifications, the thickness of the fourth pad body is 2.5 mm.

Further, the distal radius joint surface and the distal radius retention bone mating surface of the distal radius prosthesis, and the distal ulna joint surface and the ulna retention bone mating surface of the distal ulna prosthesis are porous structures.

Further, the distal radius joint surface is ellipsoidal, and/or the distal ulna joint surface is ellipsoidal.

Further, a proximal end of the distal radius prosthesis is provided with a radius broach, and the radius broach is matched with a medullary cavity of a radius reserved bone;

an ulna intramedullary pin is arranged at the proximal end of the ulna distal prosthesis and is matched with a medullary cavity of an ulna reserved bone.

Further, the radius intramedullary nail is of a porous structure, and/or the ulna intramedullary nail is of a porous structure.

Further, the distal radius prosthesis is also provided with a steel plate, and the steel plate is used for being fixedly connected with a hand bone; and/or the distal radius prosthesis is also provided with a radius nail hole, and the distal radius prosthesis can be fixedly connected with a hand bone through a radius nail;

the ulna distal prosthesis is further provided with an ulna nail hole, and the ulna distal prosthesis can be fixedly connected with a hand bone through an ulna nail.

Furthermore, the distal radius prosthesis is provided with a plurality of scattered radius suture holes, and/or the distal ulna prosthesis is provided with a plurality of scattered ulna suture holes.

The forearm bone distal end prosthesis component provided by the utility model can produce the following beneficial effects:

according to the forearm distal prosthesis assembly provided by the utility model, the radius marking line is arranged on the radius distal prosthesis, when the radius distal prosthesis is implanted, the radius marking line is aligned with the natural physiological limbus line of the reserved radius bone, the position of the radius distal prosthesis can be quickly and accurately determined, and thus the implantation and operation time can be greatly saved. In addition, through setting up radius mark line, the location of radius distal end prosthesis is more accurate, and the implantation precision is higher, is favorable to radius distal end prosthesis and radius to remain the bone and fuse better, and then improves patient's treatment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of a distal forearm bone prosthesis component in use;

FIG. 2 is a schematic structural view of one of the distal forearm bone prosthesis components provided in accordance with an embodiment of the utility model;

FIG. 3 is a schematic structural view of a distal forearm bone prosthesis component in use according to an embodiment of the utility model;

FIG. 4 is a schematic structural view of a second distal forearm prosthesis component in accordance with an embodiment of the present invention;

FIG. 5 is a partial schematic structural view of a distal forearm bone prosthesis component in use in accordance with an embodiment of the present invention;

FIG. 6 is a partial schematic structural view of a third distal forearm bone prosthesis assembly in accordance with an embodiment of the present invention;

FIG. 7 is a partial schematic structural view of a distal forearm bone prosthesis component in accordance with an embodiment of the present invention in use;

FIG. 8 is a schematic structural view of a fourth distal forearm bone prosthesis component in accordance with an embodiment of the present invention;

FIG. 9 is a schematic structural view of a five-application forearm distal prosthesis assembly in accordance with an embodiment of the present invention;

FIG. 10 is a schematic structural view of a fifth embodiment of a distal forearm bone prosthesis assembly in accordance with the present invention;

FIG. 11 is a partial schematic structural view of a sixth embodiment of a distal forearm bone prosthesis assembly in accordance with the utility model;

fig. 12 is a partial structural view of a seventh prosthesis component distal to an forearm bone according to an embodiment of the present invention.

Description of reference numerals:

010-radius; 020-ulna; 030-bones of the hand;

100-distal radius prosthesis; 110-radius marker line; 120-radius adjustment pad; 121-a first pad; 122-a second pad; 130-distal radius articular surface; 140-radius preservation bone mating surface; 150-radius broach; 160-radius suture hole; 170-steel plate; 180-radius nail;

200-ulna distal prosthesis; 210-ulna marking line; 220-ulna adjustment pad; 221-a third pad; 222-a fourth pad; 230-ulnar distal articular surface; 240-ulna retaining bone mating surface; 250-ulna medullary needle; 260-ulna suture hole; 270-ulna nail.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

The present embodiment provides a distal forearm prosthesis assembly, as shown in fig. 1-6, which may include only a distal radius prosthesis 100, wherein, as shown in fig. 1, 2 and 4, the distal radius prosthesis 100 is provided with a radius marker line 110, the radius marker line 110 being for alignment with a limbus line of a radius retaining bone.

In the forearm distal prosthesis assembly provided by this embodiment, the distal radius prosthesis 100 is provided with the radius marking line 110, and when the distal radius prosthesis 100 is implanted, the radius marking line 110 is aligned with the natural physiologic limbus line of the remaining radius bone, so as to quickly and accurately determine the position of the distal radius prosthesis 100, thereby greatly saving implantation and operation time. In addition, by arranging the radius mark line 110, the distal radius prosthesis 100 is more accurately positioned and implanted with higher precision, which is beneficial to better fusion of the distal radius prosthesis 100 and the reserved radius bone, and further improves the treatment effect of the patient.

Specifically, in this embodiment, as shown in fig. 11, the forearm distal bone prosthesis assembly further includes a radius adjustment pad 120, and along the length direction of the radius 010, the radius adjustment pad 120 includes a first pad 121 and a second pad 122 fixedly connected to each other, the first pad 121 is a solid structure and is used for matching and fastening with the proximal end of the distal radius prosthesis 100, and the second pad 122 is a porous structure and is used for matching and fastening with the radius retaining bone. By arranging the radial adjusting pad 120, the radial adjusting pad 120 can be used in cooperation with the distal radius prosthesis 100 under the condition of overlong osteotomy, so that the implanted prosthesis is accurately matched with the retained radius, and the treatment effect of the patient is finally improved. In the radial adjustment pad 120, the second pad body 122 is a porous structure, which is not only beneficial to bone ingrowth and implantation stability, but also can reduce the overall weight of the radial adjustment pad 120.

More specifically, in the present embodiment, the radius adjustment pad 120 has two specifications of a thickness of 5mm and a thickness of 10mm, and in the radius adjustment pad 120 of the two specifications, the thickness of the second pad body 122 is 2.5 mm; in the radius adjustment pad 120 having a thickness of 5mm, the first pad body 121 has a thickness of 2.5 mm; in the radius adjustment pad 120 having a thickness of 10mm, the first pad body 121 has a thickness of 7.5 mm. By providing two different gauge radius adjustment pads 120, the distal radius prosthesis 100 may be compensated for different lengths. Specifically, in the present embodiment, the radius adjustment pads 120 having a thickness of 5mm and a thickness of 10mm are two and one, respectively, so that the distal radius prosthesis 100 can obtain compensation of four different lengths, i.e., 5mm, 10mm, 15mm and 20 mm.

It should be noted that in other embodiments of the present application, the number of the radius adjustment pads 120 of each specification is not limited to the above-mentioned arrangement, for example: one for each of two different gauge radius adjustment pads 120, the distal radius prosthesis 100 may achieve compensation for three different lengths, namely 5mm, 10mm, and 15 mm. In addition, the thickness gauge of the radius adjustment pad 120 is also not limited to two of 5mm and 10mm, for example: three types of the thickness of the film can be 3mm, 5mm and 10 mm. That is, the user may set the specifications of the radius adjustment pad 120 and the specific number of each specification according to actual needs, which is not particularly limited in the present application.

Specifically, in this embodiment, the distal radius joint surface 130 and the radius retaining bone mating surface 140 of the distal radius prosthesis 100 may be both porous structures. So configured, bone ingrowth is facilitated, thereby facilitating improved implantation stability of the distal radius prosthesis 100 within the body.

In this embodiment, as shown in fig. 5 and 6, the distal radius articular surface 130 may be ellipsoidal. The contact area between the ellipsoidal joint surface and the reserved bones of the carpal bone is large, so that the bone ingrowth is facilitated, the bone ingrowth effect is further enhanced, and the portable wrist joint is particularly suitable for patients with the need of cutting off the carpal bone.

Specifically, in this embodiment, as shown in fig. 1-6, the proximal end of the distal radius prosthesis 100 is provided with a intramedullary nail 150, and the intramedullary nail 150 fits into the medullary cavity of the radius retaining bone. In other words, the thickness, curvature, etc. of the intramedullary nail 150 are adapted to the intramedullary canal of the reserved bone, so that after the intramedullary nail 150 is implanted into the intramedullary canal of the reserved bone, the radial intramedullary nail 150 is uniformly stressed, the impact between the intramedullary nail 150 and the bone of the reserved bone can be effectively reduced or even avoided, and further, the pain of the patient can be reduced.

Specifically, in this embodiment, the surface of the intramedullary nail 150 may be porous, so that it can be fixed by biological fixation of bone ingrowth. Of course, the intramedullary nail 150 may also be fixed using bone cement.

Specifically, in the present embodiment, as shown in fig. 3-6, the distal radius prosthesis 100 may further be provided with a steel plate 170, and the steel plate 170 is used for fixedly connecting with the hand bones 030. The arrangement mode is suitable for the condition that the mobility of rotation, stretching, bending and the like of the wrist joint of the radius and the wrist bone is not reserved, and the arrangement of the steel plate 170 enhances the stability of the implanted prosthesis, so that new bones can grow according to the correct installation condition.

Further, in this embodiment, as shown in fig. 9 and 10, the distal radius prosthesis 100 is further provided with a radius nail hole, and the distal radius prosthesis 100 can be fixedly connected with the hand bone 030 through a radius nail 180. This arrangement further enhances the stability of distal radius prosthesis 100 after implantation, allowing new bone growth to occur with the correct fit. More specifically, in the present embodiment, the distal radius prosthesis 100 may be provided with three radial nail holes, and when implanted, three radial nails 180 are driven into the hand bone 030 by the distal radius prosthesis 100.

In the case where the degree of motion such as rotation, flexion, etc. at the wrist joint of the radius and the wrist is not preserved, the distal radius prosthesis 100 may be fixedly connected to the hand bones 030 only through the steel plates 170, may be fixedly connected to the hand bones 030 only through the radius nails 180, and of course, may be fixedly connected to the hand bones 030 through the steel plates 170 and the radius nails 180 at the same time.

Specifically, in the present embodiment, the distal radius prosthesis 100 is provided with a plurality of radial suture holes 160. With the arrangement, soft tissues at different parts and the distal radius prosthesis 100 can be stably sutured through the radius suture holes 160, so that the soft tissues can be orderly integrated, and the distal radius prosthesis 100 can be more stably implanted.

In this embodiment, as shown in FIGS. 7-10, the forearm distal prosthesis assembly may also include both distal radius prosthesis 100 and distal ulna prosthesis 200. Specifically, in this embodiment, the ulnar distal prosthesis 200 is provided with an ulnar marking line 210, the ulnar marking line 210 being for alignment with the limbal line of the ulnar retaining bone. When the ulnar distal prosthesis 200 is implanted, aligning the ulnar marking line 210 with the natural physiologic limbal line of the ulnar retaining bone allows for rapid and accurate determination of the position of the ulnar distal prosthesis 200, thereby greatly saving implantation and surgical time. In addition, by setting the ulna marking line 210, the ulna distal prosthesis 200 is more accurately positioned, the implantation precision is higher, and the ulna distal prosthesis 200 and the ulna remaining bone are better fused, so that the treatment effect of the patient is improved.

Specifically, in this embodiment, the forearm bone distal end prosthesis assembly further includes an ulna adjustment pad 220, along the length direction of the ulna 020, the ulna adjustment pad 220 includes a third pad 221 and a fourth pad 222 fixedly connected to each other, the third pad 221 is a solid structure and is configured to be fixedly connected to the proximal end of the ulna distal end prosthesis 200 in a matching manner, and the fourth pad 222 is a porous structure and is configured to be fixedly connected to the ulna remaining bone in a matching manner. By arranging the ulna adjusting pad 220, the ulna adjusting pad 220 can be matched with the ulna distal prosthesis 200 for use under the condition of overlong osteotomy, so that the implanted prosthesis is accurately matched with the ulna remaining bone integrally, and the treatment effect of a patient is finally improved. In the ulna adjustment pad 220, the fourth pad 222 is a porous structure, which is not only beneficial to bone ingrowth and implantation stability, but also can reduce the overall weight of the ulna adjustment pad 220.

More specifically, in the present embodiment, the ulna adjustment pad 220 may also have two specifications of 5mm thick and 10mm thick, and in the ulna adjustment pad 220 of the two specifications, the thickness of the fourth pad body 222 is 2.5 mm; in the ulna adjustment pad 220 having a thickness of 5mm, the third pad 221 has a thickness of 2.5 mm; in the ulna adjustment pad 220 having a thickness of 10mm, the third pad 221 has a thickness of 7.5 mm. By providing two different thickness specifications of the ulnar adjustment pad 220, the ulnar distal prosthesis 200 may achieve different length compensation. Specifically, in the present embodiment, the ulnar adjustment pads 220, which are 5mm thick and 10mm thick, are two and one, respectively, so that the ulnar distal prosthesis 200 can obtain compensation of four different lengths, i.e., 5mm, 10mm, 15mm and 20 mm.

It should be noted that in other embodiments of the present application, the number of the ulnar adjustment pads 220 of each specification is not limited to the above-mentioned arrangement, for example: one for each of the two different gauge ulnar adjustment pads 220, the ulnar distal prosthesis 200 may achieve compensation for three different lengths, 5mm, 10mm, and 15 mm. Further, the thickness gauge of the ulnar adjustment pad 220 is also not limited to two of 5mm and 10mm, for example: three types of the thickness of the film can be 3mm, 5mm and 10 mm. That is, the user may set the specifications of the ulna adjustment pad 220 and the specific number of each specification according to actual needs, which is not particularly limited in the present application.

Specifically, in this embodiment, the ulnar distal articular surface 230 and the ulnar retaining bone mating surface 240 of the ulnar distal prosthesis 200 are both porous structures. So configured, bone ingrowth is facilitated, thereby facilitating improved stability of the ulnar distal prosthesis 200 implanted within the body.

Specifically, in this embodiment, the ulnar distal joint surface 230 is ellipsoidal. The arrangement is more favorable for bone ingrowth, further enhances the bone ingrowth effect, and is particularly suitable for patients with carpal bone resection.

Specifically, in this embodiment, the proximal end of the distal ulnar prosthesis 200 is provided with an ulnar broach 250, the ulnar broach 250 fitting into the intramedullary canal of the ulnar retaining bone. In other words, the thickness, curvature, etc. of the ulnar broach 250 are adapted to the medullary cavity of the ulnar retained bone, so that after the ulnar broach 250 is implanted into the medullary cavity of the ulnar retained bone, the ulnar broach 250 is uniformly stressed, the impact between the ulnar broach 250 and the bone of the ulnar retained bone can be effectively reduced or even avoided, and further, the pain of a patient can be reduced.

Specifically, in this embodiment, the surface of the ulnar broach 250 may be porous so as to be able to be fixed by means of biological fixation of bone ingrowth. Of course, the ulnar stylets 250 may also be fixed using bone cement.

Specifically, in the present embodiment, as shown in fig. 9 and 10, the ulnar distal prosthesis 200 is further provided with an ulnar nail hole, and the ulnar distal prosthesis 200 can be fixedly connected to the hand bone 030 through the ulnar nail 270. The arrangement is suitable for the situation that the rotation, the stretching and the bending of the wrist joint of the ulna and the carpal are not reserved, so that the stability of the ulna distal prosthesis 200 after being implanted is further enhanced, and new bones can grow according to the correct installation condition.

Specifically, in the present embodiment, the ulnar distal prosthesis 200 is provided with a plurality of ulnar suture holes 260 distributed therein. With such an arrangement, the ulna suture holes 260 can suture soft tissues at different positions and the ulna distal prosthesis 200 stably, so that the soft tissues can be integrated in order, and the ulna distal prosthesis 200 can be implanted more stably.

In summary, the distal forearm bone prosthesis assembly provided in this embodiment can have various configurations, which will be summarized in conjunction with the accompanying drawings: fig. 1 and 2 are schematic views of a first arrangement of a distal forearm prosthesis assembly including only a distal radius prosthesis 100 and associated components, wherein the distal radius articular surface 130 may be larger than the normal radius articular surface to function as a substitute for the radius and ulnar articular surfaces, the first arrangement being suitable for conditions that preserve wrist mobility;

fig. 3 and 4 are schematic structural views of a second arrangement, in which the distal forearm prosthesis assembly includes only the distal radius prosthesis 100, a steel plate 170 and other related components, wherein the distal radius joint surface 130 may be larger than the normal radius joint surface to replace the radius joint surface and the ulnar joint surface, which is suitable for the condition without preserving the wrist joint mobility; figures 5 and 6 are schematic views of a third arrangement, which is suitable for use in cases where wrist mobility is not preserved and where carpal resection is required, compared to the second arrangement;

fig. 7 and 8 are schematic structural views of a fourth arrangement, in which the distal forearm bone prosthesis assembly includes a distal radius prosthesis 100, a distal ulna prosthesis 200 and related components, and is suitable for use in conditions that preserve wrist mobility;

fig. 9 and 10 are schematic structural views of a fifth arrangement, wherein the distal forearm bone prosthesis assembly comprises a distal radius prosthesis 100, a steel plate 170, a radius nail 180, a distal ulna prosthesis 200, an ulna nail 270 and other relevant components, and is suitable for the disease without preserving the mobility of the wrist joint;

FIG. 11 is a partial schematic structural view of a sixth arrangement of a distal forearm prosthesis assembly including a radial adjustment pad 120; fig. 12 is a partial schematic view of the seventh arrangement, the distal forearm bone prosthesis assembly including an ulnar adjustment pad 220.

From the above, before the implantation operation, various forearm bone distal prosthesis components can be prepared according to actual conditions to obtain different implantation schemes, thereby increasing the selectivity during the operation so as to implant the most suitable prosthesis for the patient.

Finally, it is further noted that, herein, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A distal forearm prosthesis assembly, comprising a distal radius prosthesis (100), the distal radius prosthesis (100) being provided with a radial marker line (110), the radial marker line (110) being for alignment with a limbus line of a radius retaining bone.

2. The forearm bone distal prosthesis assembly according to claim 1, further comprising an ulnar distal prosthesis (200), the ulnar distal prosthesis (200) being provided with an ulnar marking line (210), the ulnar marking line (210) for aligning with a limbus line of an ulnar retaining bone.

3. The forearm bone distal prosthesis assembly according to claim 2, further comprising a radius adjustment pad (120), wherein the radius adjustment pad (120) comprises a first pad body (121) and a second pad body (122) which are fixedly connected along the length direction of the radius, the first pad body (121) is of a solid structure and is used for matching and fixing with the proximal end of the radius distal prosthesis (100), and the second pad body (122) is of a porous structure and is used for matching and fixing with the radius retaining bone;

the forearm bone far-end prosthesis component further comprises an ulna adjusting pad (220), the ulna adjusting pad (220) comprises a third pad body (221) and a fourth pad body (222) which are fixedly connected in the length direction of the ulna, the third pad body (221) is of a solid structure and used for being matched and fixedly connected with the near end of the ulna far-end prosthesis (200), and the fourth pad body (222) is of a porous structure and used for being matched and fixedly connected with an ulna retaining bone.

4. The forearm bone distal prosthesis assembly of claim 3, wherein said radius adjustment pad (120) and said ulna adjustment pad (220) each have two gauges of 5mm thick and 10mm thick, and wherein said second pad body (122) of said radius adjustment pad (120) of both gauges has a thickness of 2.5 mm; in the ulna adjustment pads (220) with two specifications, the thickness of the fourth pad body (222) is 2.5 mm.

5. The forearm bone distal prosthesis assembly of any one of claims 2 to 4, wherein the distal radius articular surface (130) and the radius retaining bone mating surface (140) of the distal radius prosthesis (100), and the distal ulna articular surface (230) and the ulna retaining bone mating surface (240) of the distal ulna prosthesis (200) are both porous structures.

6. The forearm distal prosthetic component of claim 5, wherein the distal radius articular surface (130) is ellipsoidal and/or the distal ulnar articular surface (230) is ellipsoidal.

7. The forearm bone distal prosthesis assembly according to any one of claims 2 to 4, characterized in that the proximal end of the distal radius prosthesis (100) is provided with a radial broach (150), the radial broach (150) fitting the medullary cavity of the radius retaining bone;

an ulna intramedullary nail (250) is arranged at the proximal end of the ulna distal prosthesis (200), and the ulna intramedullary nail (250) is matched with a medullary cavity of an ulna remaining bone.

8. The forearm bone distal prosthesis assembly according to claim 7, characterized in that the intramedullary nail (150) is of porous structure and/or the ulnar intramedullary nail (250) is of porous structure.

9. The forearm bone distal prosthesis assembly according to any one of claims 2-4, wherein said distal radius prosthesis (100) is further provided with a steel plate (170), said steel plate (170) being adapted for fixed connection with a hand bone; and/or the distal radius prosthesis (100) is also provided with a radius nail hole, and the distal radius prosthesis (100) can be fixedly connected with a hand bone through a radius nail (180);

the ulna distal prosthesis (200) is further provided with an ulna nail hole, and the ulna distal prosthesis (200) can be fixedly connected with a hand bone through an ulna nail (270).

10. The forearm distal prosthesis assembly according to any of claims 2 to 4, wherein said distal radius prosthesis (100) is provided with a plurality of scattered radius suture holes (160) and/or said distal ulna prosthesis (200) is provided with a plurality of scattered ulna suture holes (260).

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