CN110840630A - Tibial plateau holds in palm and uses its knee joint prosthesis - Google Patents

Abstract

The invention belongs to the technical field of medical prostheses, and discloses a tibial platform support and a knee joint prosthesis using the same. The tibial platform bracket includes: a platform bracket support part for connecting with a pad of a knee joint prosthesis; a platform bracket formed on the bottom of the platform bracket support part and used to be implanted in the medullary cavity of the human tibia to be connected with the human tibia The connection part, the platform support connection part comprises an abutment prosthesis connected with the bottom surface of the platform support support part and used for abutting with the osteotomy surface of the human tibia; The filling prosthesis is used for filling the bone defect of the human tibia; at least one fixing piece is used for passing through the human tibia and connecting with the filling prosthesis, so as to fix the filling prosthesis on the human tibia. The tibial plateau tray according to the present invention can be suitable for partial bone removal and is more stable after implantation.

Description

Tibial plateau support and knee joint prosthesis using the same

technical field

The invention belongs to the technical field of medical prostheses, in particular to a tibial platform support and a knee joint prosthesis using the same.

Background technique

A knee joint prosthesis is a surgical implant used to replace the knee joint, which is used in surface knee replacement surgery of the knee joint, where the damaged knee joint is treated and replaced with a knee joint prosthesis. Existing knee joint prostheses mainly include: a femoral prosthesis for connecting with a human femur, a tibial plateau bracket for connecting with a human tibia, and a pad between the femoral prosthesis and the tibial plateau bracket.

The tibial platform bracket in the prior art is mainly composed of two parts: the platform bracket support part for connecting with the pad of the knee joint prosthesis and the platform bracket connection for being implanted in the medullary cavity of the human tibia to connect with the human tibia. department. In order to improve the stability of the connection between the tibial platform support and the human body, the connecting part of the platform support is usually constructed as a complete conical structure. In the case of severe bone defects caused by knee joint revision, tumor, comminuted fracture, etc., the conical structure can have More fillers can better fill serious bone defects, thereby improving the stability of the connection between the tibial plateau and the human body. However, for some patients, the amount of damaged bone in the affected area is small, which makes the tibial plateau tray in the prior art unable to be implanted well. Removal, which leads to: On the one hand, if too much bone is removed, it will cause the phenomenon of shortening of the tibia, which will cause the affected side to be significantly shorter than the healthy side, and the functional realization will be limited. Both cause great trauma; on the other hand, removing the undamaged bone directly leads to a reduction in the strength of the knee joint. In addition, the connecting part of the platform bracket in the prior art is often constructed as a solid structure, which leads to the defect of the muscle attachment point and the damage to the joint capsule caused by a large number of bone defects on the tibial side of the knee joint in the case of severe bone defect, which also directly causes It solves the problem of poor stability of the knee joint prosthesis after replacement.

In view of the deficiencies of the prior art, those skilled in the art urgently need to seek a tibial plateau tray that is suitable for the removal of part of the bone and is more stable after implantation, so as to make up for the deficiencies of the prior art.

SUMMARY OF THE INVENTION

In order to be suitable for the removal of part of the bone and to be more stable after implantation, the present invention aims to provide a tibial plateau tray.

The tibial plateau tray according to the present invention includes: a plateau tray support part for connecting with a pad of a knee joint prosthesis; a platform tray support part formed at the bottom of the platform tray support part for implantation in the medullary cavity of the human tibia to be connected with the human tibia The platform support connecting part comprises an abutment prosthesis connected with the bottom surface of the platform support support part and used for abutting with the osteotomy surface of the human tibia; an extended filling prosthesis, the filling prosthesis is used to fill the bone defect of the tibia of the human body; at least one fixing piece is used to pass through the tibia of the human body and be connected with the filling prosthesis, so as to fix the filling prosthesis on the tibia of the human body superior.

Further, the tibial plateau tray further includes a three-dimensional porous structure layer formed on the bottom surface of the platform tray support portion and/or formed on the outer surface of the abutting prosthesis and/or formed on the outer surface of the filling prosthesis.

Further, the face of the abutting prosthesis away from the platform support support portion is configured as a first plane, and the filling prosthesis includes a vertical face vertically connected to the first plane, and extending from an end of the vertical face away from the first plane to The first filling arc surface of the bottom surface of the platform support support part matches the shape of the bone defect of the human tibia.

Further, the face of the abutting prosthesis away from the platform support portion is configured as a second plane, and the filling prosthesis includes an inclined surface connected at an included angle with the second plane, and extending from one end of the inclined surface away from the second plane to The second filling arc surface of the bottom surface of the platform support support part matches the shape of the bone defect of the human tibia.

Further, the platform support connecting part further comprises an extension prosthesis extending in a direction away from the abutting prosthesis from one end of the filling prosthesis away from the abutting prosthesis, and a three-dimensional porous structure layer is formed on the surface of the extension prosthesis.

Further, the fixing member includes at least two bone nails, the platform connecting portion includes a threaded hole formed on the filling prosthesis and/or the extension prosthesis to form a threaded connection with the bone nail, and the surface of the bone nail and/or the threaded hole are threaded. A three-dimensional porous structure layer is formed on the inner surface.

Further, the axes of the threaded holes are arranged at an included angle.

Further, a groove is formed on the side of the platform support support portion connected with the platform support connecting portion, and the groove is filled with a three-dimensional porous structure layer.

Further, the three-dimensional porous structure layer is processed by laser cladding technology.

The present invention also provides a knee joint prosthesis, comprising the above-mentioned tibial plateau support.

Compared with the prior art, the tibial plateau tray of the present invention has the following advantages:

1) The tibial plateau tray of the present invention can be customized by processing the filling prosthesis, so that when the tibial plateau tray is implanted, it is not necessary to remove the undamaged bone of the patient, and only the damaged bone can be removed. The implantation of the tibial plateau tray can be completed by filling the bone defect with the prosthesis, so that the patient can retain the healthy bone of the human body to the greatest extent, which can effectively improve the strength of the knee joint of the patient, so that the patient can Postoperative motor function was better.

2) Only the damaged bone is removed, and the healthy bone of the human body is preserved to the greatest extent. It can also avoid the shortening of the tibia caused by too much bone removed, so as to effectively avoid the patient's affected side than the healthy side. There are obvious problems such as shortening and limited function implementation.

3) The tibial plateau support of the embodiment of the present invention is also fixedly connected with the tibia of the human body through the fixing member, thereby directly improving the stability of the tibial plateau support after implantation.

4) The tibial platform support of the present invention is formed with a three-dimensional porous structure layer on the bottom surface of the platform support support part, the outer surface of the abutting prosthesis, and the outer surface of the filling prosthesis, so as to facilitate the tibial platform support in the postoperative period. It can be quickly fused and fixed with human bone, which can more effectively improve the recovery effect of patients after surgery.

5) In the case of severe bone defect, the tibial plateau tray of the present invention can also improve the stability after replacement through the three-dimensional porous structure layer due to problems such as muscle attachment point defect and joint capsule damage.

Description of drawings

Fig. 1 is the structural schematic diagram of the tibial plateau tray of the embodiment of the present invention, wherein shows the connection schematic diagram of the tibial plateau tray and human tibia;

FIG. 2 is a schematic structural diagram of the first embodiment of the platform support connecting portion shown in FIG. 1;

Fig. 3 is the side view of the first embodiment of the platform bracket connecting part shown in Fig. 2;

FIG. 4 is a schematic structural diagram of a second embodiment of the platform bracket connecting portion shown in FIG. 1 .

Detailed ways

In order to better understand the purpose, structure and function of the present invention, a tibial plateau support of the present invention will be described in further detail below with reference to the accompanying drawings.

1 to 4 illustrate the structure of a tibial plateau tray 100 according to an embodiment of the present invention. 1 shows a schematic diagram of the connection between the tibial plateau tray 100 and the human tibia according to an embodiment of the present invention, FIG. 2 shows a schematic structural diagram of the first embodiment of the tibial plateau tray 100 according to an embodiment of the present invention, and FIG. 4 A schematic structural diagram of the second embodiment of the tibial plateau tray 100 according to the embodiment of the present invention is shown. As shown in FIG. 1 , the tibial platform bracket 100 includes: a platform bracket support part 1 for connecting with a pad of a knee joint prosthesis; a medullary cavity formed at the bottom of the platform bracket support part 1 for implanting a human tibia With the platform support connecting part 2 that is connected with the human tibia, in conjunction with Figure 2 and Figure 4, the platform support connecting part 2 includes and is connected with the bottom surface 11 of the platform support supporting part 1 and is used for abutting with the osteotomy surface of the human tibia. The abutting prosthesis 21, and the filling prosthesis 22 connected with the abutting prosthesis 21 and extending away from the platform support support 1, the filling prosthesis 22 is used to fill the bone defect of the human tibia; at least one fixing member 3, The fixing member 3 is used for connecting with the filling prosthesis 22 through the tibia of the human body, so as to fix the filling prosthesis 22 on the tibia of the human body.

When using the tibial platform bracket 100 of the embodiment of the present invention, the bone of the affected part of the human tibia is first removed to form the tibial medullary cavity, and the undamaged bone surface of the human tibia is subjected to osteotomy to form an osteotomy plane. When the tibial plateau tray 100 is implanted, the abutting prosthesis 21 is abutted with the osteotomy plane of the human tibia, so that healthy bone can support the abutting prosthesis 21, while the filling prosthesis 22 is implanted into the tibial bone marrow In the cavity to fill the bone defect of the human tibia, the fixing member 3 passes through the human tibia and is connected with the filling prosthesis 22, so that the filling prosthesis 22 is fixedly connected with the human tibia, thereby completing the implantation of the tibial platform bracket 100 according to the embodiment of the present invention. enter.

Through the above arrangement, compared with the prior art, the tibial plateau support 100 of the embodiment of the present invention has the following advantages:

1) The tibial plateau tray 100 of the embodiment of the present invention can be customized to process the filling prosthesis 22 to make its shape consistent with the shape of the bone defect of the human tibia, so that the filling prosthesis 22 can better adapt to the patient Diameter and curvature of the medullary canal. In this way, when the tibial plateau tray 100 is implanted, it is not necessary to remove the undamaged bone of the patient, but only to remove the damaged bone and fill the bone defect with the prosthesis 22 to complete the tibial plateau tray 100. Implantation, so that the patient can retain the healthy bone of the human body to the greatest extent, which can effectively improve the strength of the patient's knee joint, and make the patient's motor function better after surgery;

2) Only the damaged bone is removed, and the healthy bone of the human body is preserved to the greatest extent. It can also avoid the shortening of the tibia caused by too much bone removed, so as to effectively avoid the patient's affected side than the healthy side. There are obvious shortening, limited function realization and other problems;

3) The tibial platform bracket 100 of the embodiment of the present invention is also fixedly connected to the tibia of the human body through the fixing member 3, thereby directly improving the stability of the tibial platform bracket 100 after implantation.

Preferably, the fixing member 3 can be connected with the filling prosthesis 22 through the tibia on one side of the filling prosthesis 22 . Through this arrangement, on the one hand, the connection distance between the fixing element 3 and the filling prosthesis 22 can be shortened, thereby further improving the stability of the fixation; It can effectively ensure the strength of undamaged bone.

In a preferred embodiment as shown in FIG. 1 , the tibial plateau tray 100 may further comprise a bottom surface 11 formed on the platform tray support portion 1 and/or formed on the outer surface of the abutting prosthesis 21 and/or formed on the filling The three-dimensional porous structure layer 4 on the outer surface of the prosthesis 22 (shown in conjunction with FIG. 3 ). Preferably, a three-dimensional porous structure layer 4 may be formed on the bottom surface 11 of the platform support support portion 1 , the outer surface of the abutting prosthesis 21 and the outer surface of the filling prosthesis 22 . According to the present invention, the three-dimensional porous structure layer 4 can be configured as a plurality of filament diameters and a plurality of pores formed by the interconnected interconnection of the multiple filament diameters, and the pores are connected with each other, so that the structure of the layer 4 can be more compatible with the trabecular bone structure of the human body. In order to approach, the ability of adhesion, proliferation and differentiation of osteoblasts can be effectively improved, and the rapid fusion and fixation of human bone and the three-dimensional porous structure layer 4 can be effectively promoted. Through this arrangement, the tibial platform tray 100 according to the embodiment of the present invention forms a three-dimensional porous structure on the bottom surface 11 of the platform tray support portion 1 , the outer surface of the abutting prosthesis 21 and the outer surface of the filling prosthesis 22 on the one hand. Layer 4, so that after the tibial plateau tray 100 is connected with the tibia of the human body, the bone can grow into the pores of the three-dimensional porous structure layer 4 quickly and naturally. Fusion and fixation can more effectively improve the recovery effect of patients after surgery; on the other hand, in the case of severe bone defects, problems such as muscle attachment point defects and joint capsule damage are caused. The stability after replacement can also be directly improved through better fusion of the three-dimensional porous structure layer 4 with the bone.

Preferably, the porosity of the three-dimensional porous structure layer 4 may range from 50% to 80%, and the pore size may range from 100 μm to 400 μm. The three-dimensional porous structure layer 4 with higher porosity can well induce bone ingrowth, while the three-dimensional porous structure layer 4 with smaller pore size can well induce bone crawling. It should be noted that the cross-section of each hole formed by the wire diameter is not a regular circle, and its cross-sectional shape can be various shapes. In view of this, the "diameter" of each hole mentioned here should be understood as the cross-section of each hole. The diameter of the circle when it is equivalent to a circle. Since the diameter of the section equivalent to a circle is calculated according to the actual area of the section, the value of the obtained diameter is an accurate value. By connecting the pores formed by the staggered connection of the wire diameters with each other, and configuring the diameters of the pores to be inconsistent, and specifically setting the diameters and porosity ranges of the pores of the three-dimensional porous structure layer 4, the three-dimensional porous structure layer 4 The structure can be closer to the trabecular bone structure of the human body.

In the first embodiment shown in FIGS. 2 and 3 , the side of the abutting prosthesis 21 away from the platform support support 1 may be configured as a first plane 211 , and the filling prosthesis 22 may include a vertical connection to the first plane. The vertical surface 221 of 211, and the first filling arc surface 222 extending from the end of the vertical surface 221 away from the first plane 211 to the bottom surface 11 of the platform support support portion 1, the first filling arc surface 222 and the bone of the human tibia. The shape of the defect matches. Wherein, the first plane 211 is configured to match the osteotomy plane of the human tibia, so as to provide better support for the tibial plateau tray 100 , and the first filling arc surface 222 formed by the customized processing of the filling prosthesis 22 It is configured to fit with the medullary cavity of the bone defect of the human tibia, so that the filling prosthesis 22 can effectively fill the bone defect. It should be noted here that, due to the customization of the platform support connecting portion 2, the first flat surface 211 can also be formed as a non-planar surface matching the osteotomy surface, and the first filling arc surface 222 of the filling prosthesis 22 can be configured to be far away from the abutting surface. The curved surface of the abutting prosthesis 21 can also be configured to be curved toward the abutting prosthesis 21, as long as the filling prosthesis 22 can effectively fill the bone defect of the human tibia.

In the second embodiment shown in FIG. 4 , the side of the abutting prosthesis 21 away from the platform support support 1 may be configured as a second plane 212 , and the filling prosthesis 22 may include an angled connection with the second plane 212 . The inclined surface 223, and the second filling arc surface 224 extending from the end of the inclined surface 223 away from the second plane 212 to the bottom surface 11 of the platform support support portion 1, the second filling arc surface 224 and the bone defect of the human tibia. shape to match. Wherein, the second plane 212 is configured to match the osteotomy plane of the human tibia, so as to provide better support for the tibial plateau tray 100 , and the second filling arc surface 224 formed by the customized processing of the filling prosthesis 22 It is configured to fit with the medullary cavity of the bone defect of the human tibia, so that the filling prosthesis 22 can effectively fill the bone defect. It should be noted here that, due to the customization of the platform support connecting part 2 , the second plane 212 can also be formed as a non-plane that matches the osteotomy surface, and the second filling arc surface 224 of the filling prosthesis 22 can be configured to be far away from the abutting surface. The curved surface of the abutting prosthesis 21 can also be configured to be curved toward the abutting prosthesis 21, as long as the filling prosthesis 22 can effectively fill the bone defect of the human tibia.

In the preferred embodiment shown in FIGS. 1 to 4 , the platform holder connecting portion 2 may further comprise an extension extending from the end of the filling prosthesis 22 away from the abutting prosthesis 21 in a direction away from the abutting prosthesis 21 . In the prosthesis 23, a three-dimensional porous structure layer 4 may be formed on the surface of the extended prosthesis 23. Through this arrangement, on the one hand, the formed extension prosthesis 23 not only facilitates the implantation of the tibial plateau tray 100 into the tibial medullary cavity of the human body, but also makes the connection between the tibial plateau tray 100 and the human tibia more stable; The three-dimensional porous structure layer 4 formed on the surface of the 23 can also enable better fusion of the bone and the prosthesis 23, so as to further improve the fixing effect of the connection between the tibial plateau tray 100 and the human tibia.

In the preferred embodiment as shown in FIG. 1 , the fixing member 3 may include at least two bone nails 31 , and the platform connecting portion 2 may include bone nails formed on the filling prosthesis 22 and/or the lengthening prosthesis 23 . 31 forms a threaded hole (not shown in the figure) for threaded connection, and a three-dimensional porous structure layer 4 may be formed on the surface of the bone nail 31 and/or the inner surface of the threaded hole. Preferably, the platform connecting part 2 may include threaded holes formed on the filling prosthesis 22 and the extension prosthesis 23, so that the bone nail 31 can be connected with the filling prosthesis 22 at the same time according to specific fixation requirements to connect the platform connecting part 2 is connected with the human tibia, or is connected with the extension prosthesis 23 at the same time to connect the platform connecting part 2 with the human tibia, or is connected with the filling prosthesis 22 and the extension prosthesis 23 respectively to connect the platform connecting part 2 with the human tibia, thereby The connection between the platform connecting portion 2 and the human tibia is made more flexible, so as to further improve the fixation effect between the platform connecting portion 2 and the human tibia. Also preferably, a three-dimensional porous structure layer 4 is formed on the outer surface of the bone nail 31 and the inner surface of the threaded hole, so that, on the one hand, combined with the above, the three-dimensional porous structure layer 4 can effectively promote the fusion with bone, Bone can be differentiated and regenerated through the pores of the three-dimensional porous structure layer 4 at the connection between the bone nail 31 and the threaded hole, so that the connection between the bone nail 31 and the threaded hole can be fused with the bone tissue, which can better improve the quality of the two. On the other hand, it is also beneficial to increase the frictional force of the surface where the bone nail 31 and the threaded hole are matched, so that the bone nail 31 and the threaded hole can be effectively improved. The connection strength is high, so as to avoid the dislodgement of the bone nail 31 .

In a preferred embodiment, the axes of the threaded holes can be arranged at an included angle, so that the bone nail 31 forms an included angle after being screwed with the threaded holes. Through this arrangement, on the one hand, the bone nail 31 can form a better fit with the arc surfaces of the first filling arc surface 222 and the second filling arc surface 224, thereby effectively improving the connection strength of the bone nail 31 and the threaded hole, To avoid the phenomenon that the bone nails 31 are loose and fall off; on the other hand, the bone nails 31 arranged at an angle can make the filling prosthesis 22 subject to shear stress in multiple directions, thereby effectively reducing the relative relative strength of the tibial platform bracket 100 . Risk of fretting of the tibia.

In a preferred embodiment, a groove (not shown in the figure) is formed on the side of the platform support support portion 1 connected to the platform support connecting portion 2 , and the three-dimensional porous structure layer 4 is filled in the groove. Preferably, the depth of the groove may range from 1.5 mm to 2 mm, and the thickness of the three-dimensional porous structure layer 4 filled in the groove may range from 1.5 mm to 2 mm. Further preferably, the depth of the groove is the same as the thickness of the three-dimensional porous structure layer 4 filled in the groove. Through this arrangement, the tibial plateau tray 100 of the embodiment of the present invention can be more conveniently applied to the revision and replacement of the tibial plateau tray 100 . Specifically, when the tibial platform bracket 100 according to the embodiment of the present invention is applied to the revision and replacement of the tibial platform bracket 100, the platform bracket connecting portion 2 can be customized and processed, and the part of the platform bracket support portion 1 can be configured to be different from the existing one. Some platform support parts have the same shape and structure. By making the depth of the groove and the thickness of the three-dimensional porous structure layer 4 filled in the groove the same, the three-dimensional porous structure layer formed on the bottom surface 11 of the platform support support part 1 is made. The thickness of 4 does not affect the overall thickness of the platform bracket support portion 1, so that the platform bracket support portion 1 can be more matched with the structure of the platform bracket support portion to be replaced. And the formed three-dimensional porous structure layer 4 can be better integrated with the bone, thereby also improving the stability of the platform support part 1 after replacement.

In a preferred embodiment, the three-dimensional porous structure layer 4 can be processed by laser cladding technology. Laser cladding technology refers to placing a selected coating material on the bottom surface 11 of the platform support support 1, the outer surface of the abutting prosthesis 21 and the outer surface of the filling prosthesis 22, and irradiated by laser to make it and the platform support. The thin layers on the surfaces of the supporting part 1, the abutting prosthesis 21 and the filling prosthesis 22 are melted at the same time, and after rapid solidification, they form a very low dilution that is closely related to the platform supporting part 1, the abutting prosthesis 21 and the filling prosthesis 22. Process for forming metallurgically bonded surface coatings of materials. On the one hand, the three-dimensional porous structure layer 4 processed by this method can effectively ensure the strength of the platform support part 1 , the abutting prosthesis 21 and the filling prosthesis 22 , thereby effectively ensuring the tibial platform of the embodiment of the present invention. The stability of the support 100 after being implanted in the human body, on the other hand, the materials of the three-dimensional porous structure layer 4 can be selected from more diverse types, so that it can be more matched with the affected part of the human body, and the tibial platform of the embodiment of the present invention is improved. 100 applicability.

Preferably, the material of the three-dimensional porous structure layer 4 may be titanium alloy, pure titanium or tantalum metal, or the like. Preferably, the three-dimensional porous structure layer 4 can be made of titanium alloy material, preferably made of Ti6Al4V.

The present invention also provides a knee joint prosthesis, comprising the above-mentioned tibial plateau support 100 . It can be seen from the above description that the knee joint prosthesis using the tibial plateau support 100 does not need to remove the undamaged bone of the patient, and only needs to fill the bone defect of the human tibia with the filling prosthesis 22 to complete the tibial plateau. The implantation of the support 100 allows the patient to retain the healthy bone of the human body to the greatest extent, which can effectively improve the strength of the patient's knee joint, so that the patient's motor function after surgery is better; Healthy bone can also avoid the phenomenon of shortening of the tibia caused by too much bone removed during the implantation of the prosthesis, which can effectively avoid the patient's affected side being significantly shorter than the healthy side and achieve functional realization. In addition, the tibial platform bracket 100 of the embodiment of the present invention is also fixedly connected to the tibia of the human body through the fixing member 3, and at the same time, the bottom surface 11 of the platform bracket support portion 1 and the outer surface of the abutting prosthesis 21 are also fixedly connected. The three-dimensional porous structure layer 4 is formed on the surface and the outer surface of the filling prosthesis 22 , thereby directly improving the stability of the tibial plateau tray 100 after implantation.

It should be noted that, unless otherwise specified, the technical or scientific terms used in this application should have the usual meanings understood by those skilled in the art to which the present invention belongs.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. The scope of the invention should be included in the scope of the claims and description of the present invention. In particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any manner. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims (10)

1. a tibial plateau support, is characterized in that, comprises: A platform support part for connecting with the pad of the knee joint prosthesis; A platform bracket connecting portion formed at the bottom of the platform bracket support portion for being implanted in the medullary cavity of the human tibia to be connected with the human tibia, the platform bracket connecting portion comprising a bottom surface connected to the platform bracket supporting portion and An abutting prosthesis for abutting with the osteotomy surface of a human tibia, and a filling prosthesis connected to the abutting prosthesis and extending away from the platform support support portion, the filling prosthesis for filling the human body Bone defect of the tibia; At least one fixing member is used for connecting with the filling prosthesis through the tibia of the human body, so as to fix the filling prosthesis on the tibia of the human body. 2. The tibial plateau tray of claim 1, wherein the tibial plateau tray further comprises a bottom surface formed on the platform tray support portion and/or an outer surface formed on the abutting prosthesis and /or a three-dimensional porous structure layer formed on the outer surface of the filled prosthesis. 3 . The tibial plateau tray according to claim 2 , wherein the side of the abutting prosthesis away from the platform tray support portion is configured as a first plane, and the filling prosthesis includes a vertical connection to the The vertical surface of the first plane, and the first filling arc surface extending from the end of the vertical surface away from the first plane to the bottom surface of the platform support support portion, the first filling arc surface and the human body Match the shape of the bone defect of the tibia. 4. The tibial plateau tray according to claim 2, wherein a side of the abutting prosthesis away from the platform tray support portion is configured as a second plane, and the filling prosthesis comprises a an inclined surface whose planes are connected at an included angle, and a second filling arc surface extending from the end of the inclined surface away from the second plane to the bottom surface of the platform support support part, the second filling arc surface is connected to the human body Match the shape of the bone defect of the tibia. 5. The tibial platform tray according to claim 3 or 4, wherein the platform tray connecting portion further comprises a direction away from the abutting prosthesis from one end of the filling prosthesis away from the abutting prosthesis The elongated prosthesis extends in the direction of the body, and the three-dimensional porous structure layer is formed on the surface of the elongated prosthesis. 6 . The tibial plateau tray according to claim 5 , wherein the fixing member comprises at least two bone nails, and the platform connecting portion comprises a tibial platform formed on the filling prosthesis and/or the extension prosthesis. 7 . A threaded hole is formed on the bone nail to be threadedly connected, and the three-dimensional porous structure layer is formed on the surface of the bone nail and/or the inner surface of the threaded hole. 7 . The tibial plateau tray according to claim 6 , wherein the axes of the threaded holes are arranged at an included angle. 8 . 8. The tibial platform support according to any one of claims 1 to 4, wherein a groove is formed on a surface of the platform support support portion that is connected to the platform support connecting portion, and the groove is It is filled with a three-dimensional porous structure layer. 9 . The tibial plateau tray according to claim 8 , wherein the three-dimensional porous structure layer is processed by laser cladding technology. 10 . 10. A knee joint prosthesis, characterized by comprising the tibial plateau tray according to any one of claims 1 to 9.

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