CN211325900U - Tibial plateau holds in palm and uses its knee joint prosthesis - Google Patents

Abstract

The utility model belongs to the technical field of medical false body, a knee joint false body that tibial plateau held in the palm and used it is disclosed. This tibial plateau holds in palm includes: a platform support portion for connection with a pad of a knee prosthesis; the platform support connecting part is formed at the bottom of the platform support supporting part and is used for being implanted into a medullary cavity of the human tibia so as to be connected with the human tibia, the platform support connecting part comprises an abutting prosthesis which is connected with the bottom surface of the platform support supporting part and is used for abutting against a osteotomy surface of the human tibia, and a filling prosthesis which is connected with the abutting prosthesis and extends along the part far away from the platform support supporting part, and the filling prosthesis is used for filling a bone defect part of the human tibia; and at least one fixing part which is used for penetrating the tibia of the human body and connecting the filling prosthesis with the filling prosthesis so as to fix the filling prosthesis on the tibia of the human body. According to the utility model discloses a tibial plateau holds in palm can be applicable to getting rid of partial sclerotin and more stable after implanting.

Description

Tibial plateau holds in palm and uses its knee joint prosthesis

Technical Field

The utility model belongs to the technical field of medical false body, concretely relates to knee joint false body that tibial plateau held in the palm and used it.

Background

Knee prostheses are surgical implants used to replace the knee, which are used in a resurfacing knee replacement procedure for the knee, treating a damaged knee and replacing it with a knee prosthesis. The existing knee joint prosthesis mainly comprises: the tibial plateau support comprises a femoral prosthesis for coupling to a femur of a human body and a tibial plateau support for coupling to a tibia of a human body, and a liner positioned between the femoral prosthesis and the tibial plateau support.

The tibial plateau among the prior art holds in the palm mainly by two parts: a platform support portion for coupling to a spacer of a knee joint prosthesis and a platform support connection portion for implantation in a medullary cavity of a human tibia to couple to the human tibia. In order to improve the stability of the tibial platform support connected with the human body, the platform support connecting part is usually constructed into a complete cone structure, and under the condition of severe bone defect caused by knee joint revision, tumor, comminuted fracture and the like, the cone structure can be provided with more filling bodies to better fill the severe bone defect part, so that the stability of the tibial platform support connected with the human body is improved. However, the affected area of the patient has less damaged bone, which makes the prior art tibial plateau tray less well implantable, and if implanted, the undamaged bone needs to be removed, which results in: on one hand, if too much bone is removed, the tibia can be shortened, so that the affected side is obviously shortened compared with the healthy side, the function is limited, and great trauma can be caused to the body and the mind of a patient; on the other hand, the removal of undamaged bone directly results in a reduction in the strength of the knee joint. In addition, the platform support connecting part in the prior art is often constructed in a solid structure, which results in the defect of muscle attachment points and the damage of joint capsules caused by a large amount of bone defects on the tibia side of the knee joint under the condition of serious bone defects, thereby directly generating the problem of poor stability of the knee joint prosthesis after replacement.

In view of the deficiencies of the prior art, there is a need for a tibial plateau tray that is more stable after implantation and that is suitable for partial bone removal to compensate for the deficiencies of the prior art.

SUMMERY OF THE UTILITY MODEL

In order to be applicable to the removal of partial sclerotin and more stable after implanting, the utility model aims to provide a tibial plateau holds in palm.

According to the utility model discloses a tibial plateau holds in palm includes: a platform support portion for connection with a pad of a knee prosthesis; the platform support connecting part is formed at the bottom of the platform support supporting part and is used for being implanted into a medullary cavity of the human tibia so as to be connected with the human tibia, the platform support connecting part comprises an abutting prosthesis which is connected with the bottom surface of the platform support supporting part and is used for abutting against a osteotomy surface of the human tibia, and a filling prosthesis which is connected with the abutting prosthesis and extends along the part far away from the platform support supporting part, and the filling prosthesis is used for filling a bone defect part of the human tibia; and at least one fixing part which is used for penetrating the tibia of the human body and connecting the filling prosthesis with the filling prosthesis so as to fix the filling prosthesis on the tibia of the human body.

Further, the tibial plateau support also includes a three-dimensional porous structural layer formed on the bottom surface of the plateau support and/or on the outer surface of the abutment prosthesis and/or on the outer surface of the filler prosthesis.

Further, the one side structure of keeping away from the platform of butt prosthesis holds in the palm the supporting part is the first plane, fills the prosthesis and includes the vertical face of perpendicular connection in the first plane, and extends to the first cambered surface that fills of the bottom surface of platform support supporting part from the one end of keeping away from the first plane of vertical face, and the first cambered surface that fills matches with the shape of the bone defect department of human shin bone.

Further, the one side structure of keeping away from platform support supporting part of butt prosthesis is the second plane, and the filling prosthesis includes the inclined plane of being connected with the second plane becomes the contained angle, and extends to the second cambered surface of filling of the bottom surface of platform support supporting part from the one end of keeping away from the second plane of inclined plane, and the second fills the shape phase-match of cambered surface and the bone defect department of human shin bone.

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

Further, the fixing piece comprises at least two bone nails, the platform support connecting part comprises threaded holes which are formed on the filling prosthesis and/or the extension prosthesis and are in threaded connection with the bone nails, and a three-dimensional porous structure layer is formed on the surface of the bone nails and/or the inner surface of the threaded holes.

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

Furthermore, a groove is formed in the surface, connected with the platform support connecting part, of the platform support supporting part, and a three-dimensional porous structure layer is filled in the groove.

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

The utility model also provides a knee joint prosthesis, hold in the palm including above-mentioned tibial plateau.

Compared with the prior art, the utility model discloses a tibial plateau holds in palm has the following advantage in several respects:

1) the utility model discloses a tibial plateau holds in palm the accessible and carries out the processing of customization to filling the false body, like this, when tibial plateau holds in the palm the implantation, can need not to get rid of patient's undamaged sclerotin, only need get rid of impaired sclerotin and will fill the false body and fill the implant that the defective department of bone can accomplish tibial plateau held in the palm to make the patient can be at utmost remain human healthy sclerotin, and then can improve the self intensity of patient's knee joint effectively, make the motion function of patient at the postoperative better.

2) Only the damaged bone is removed, the healthy bone of the human body is retained to the maximum extent, and the phenomenon of tibia shortening caused by excessive removed bone can be avoided, so that the problems that the affected side of a patient is obviously shortened compared with the healthy side, the function is limited and the like can be effectively avoided.

3) The utility model discloses a tibial plateau holds in palm still through the mounting with its and human shin bone fixed connection to directly improved tibial plateau and held in the palm the stability of implanting the after-fixing.

4) The utility model discloses a tibial plateau holds in the palm all is formed with three-dimensional porous structure layer on the surface of its platform support portion's bottom surface, butt false body and the surface of filling false body to can be favorable to tibial plateau to hold in the palm and fuse fast and fix with human sclerotin at the postoperative, and then can improve the recovery effect of patient's postoperative more effectively.

5) The muscle attachment point that causes under the bad bone defect condition is defective, the joint capsule damages scheduling problem and leads to, the utility model discloses a tibial plateau holds in the palm can also improve its stability after replacing through three-dimensional porous structure layer.

Drawings

Fig. 1 is a schematic structural view of a tibial plateau tray according to an embodiment of the present invention, in which a schematic connection diagram of the tibial plateau tray and a tibia of a human body is shown;

FIG. 2 is a schematic structural view of a first embodiment of the platform bracket connection portion shown in FIG. 1;

FIG. 3 is a side view of the first embodiment of the platform bracket connection shown in FIG. 2;

fig. 4 is a schematic structural view of a second embodiment of the platform holder connecting part shown in fig. 1.

Detailed Description

For better understanding of the purpose, structure and function of the present invention, the following description will be made in detail with reference to the accompanying drawings.

Fig. 1 to 4 show a structure of a tibial plateau tray 100 according to an embodiment of the present invention. Wherein, fig. 1 shows according to the utility model discloses a tibial plateau holds in palm 100 and the schematic diagram of being connected of human shin bone, fig. 2 shows according to the utility model discloses a tibial plateau holds in palm the structural schematic diagram of the first embodiment of 100, fig. 4 shows according to the utility model discloses a structural schematic diagram of the second embodiment of tibial plateau holds in palm 100. As shown in fig. 1, the tibial plateau tray 100 includes: a platform support 1 for connection to a pad of a knee joint prosthesis; a platform tray connecting part 2 formed at the bottom of the platform tray supporting part 1 and used for being implanted in the medullary cavity of the human tibia so as to be connected with the human tibia, as shown in fig. 2 and 4, the platform tray connecting part 2 comprises an abutting prosthesis 21 connected with the bottom surface 11 of the platform tray supporting part 1 and used for abutting against the osteotomy surface of the human tibia, and a filling prosthesis 22 connected with the abutting prosthesis 21 and extending along the direction far away from the platform tray supporting part 1, wherein the filling prosthesis 22 is used for filling the bone defect part of the human tibia; at least one fixing member 3, the fixing member 3 being adapted to be coupled to the prosthesis 22 through the tibia of the person to fix the prosthesis 22 to the tibia of the person.

The utility model discloses tibial plateau holds in palm 100 is when using, at first gets rid of the affected part sclerotin of human shin bone in order to form shin bone pulp chamber to do the osteotomy to handle in order to form the osteotomy plane to the undamaged sclerotin surface of human shin bone. Tibial plateau holds in palm 100 when implanting, with butt false body 21 and the plane looks butt of cutting of human shin bone to make healthy sclerotin can support butt false body 21, will fill false body 22 simultaneously and implant the damaged department of bone of shin bone marrow intracavity in order to fill human shin bone, mounting 3 passes human shin bone and fills false body 22 and links to each other, makes to fill false body 22 and human shin bone fixed connection, thereby accomplishes the utility model discloses the implantation of tibial plateau holds in the palm 100.

Through the setting, compare with prior art, the utility model discloses tibial plateau holds in palm 100 has the following advantage in several respects:

1) the utility model discloses tibial plateau holds in palm 100 accessible carries out the processing of customization to filling false body 22, makes its shape unanimous with the shape of the bone defect department of human shin bone to make diameter and the crooked degree of adaptation patient's pulp cavity that filling false body 22 can be better. Thus, when the tibial plateau support 100 is implanted, the implantation of the tibial plateau support 100 can be completed only by removing damaged bone and filling the bone defect with the filling prosthesis 22 without removing the undamaged bone of the patient, so that the patient can retain the healthy bone of the human body to the maximum extent, the self strength of the knee joint of the patient can be effectively improved, and the motion function of the patient after the operation is better;

2) only the damaged bone is removed, the healthy bone of the human body is retained to the maximum extent, and the phenomenon of tibia shortening caused by excessive removed bone can be avoided, so that the problems that the affected side of a patient is obviously shortened compared with the healthy side, the function is limited and the like can be effectively avoided;

3) the utility model discloses tibial plateau holds in palm 100 still through mounting 3 with its and human shin bone fixed connection to directly improved tibial plateau and held in the palm 100 the stability of implanting the after-fixing.

Preferably, the fixture 3 is attachable to the augment 22 via the tibia on one side of the augment 22. By this arrangement, on the one hand, the connection distance of the fixing element 3 to the filling prosthesis 22 can be shortened, thereby further improving the stability of the fixation; on the other hand, damage to the bone due to the fact that the fixing member 3 penetrates through the intact bone can be avoided, and therefore the strength of the intact bone can be effectively guaranteed.

In a preferred embodiment as illustrated in fig. 1, the tibial plateau 100 may further comprise a three-dimensional porous structural layer 4 (shown in connection with fig. 3) formed on the bottom surface 11 of the plateau support 1 and/or on the outer surface of the abutment prosthesis 21 and/or on the outer surface of the filler prosthesis 22. Preferably, the bottom surface 11 of the platform support 1, the outer surface of the abutment prosthesis 21 and the outer surface of the filler prosthesis 22 may each be formed with a three-dimensional porous structure layer 4. According to the utility model discloses, three-dimensional porous structure layer 4 can be constructed for by many silk footpaths and by a plurality of holes that many mutual staggered connection of silk footpath formed, each hole communicates each other to make its structure more be close with human bone trabecula structure, thereby can improve osteoblast's adhesion, appreciation, differentiated ability effectively, promoted human sclerotin and three-dimensional porous structure layer 4 fast fusion and fixed effectively. Through the arrangement, the tibial platform support 100 of the embodiment of the utility model, on one hand, the three-dimensional porous structure layer 4 is formed on the bottom surface 11 of the platform support supporting part 1, the outer surface of the butt prosthesis 21 and the outer surface of the filling prosthesis 22, so that after the tibial platform support 100 is connected with the tibia of a human body, the bone can quickly and naturally grow into the pores of the three-dimensional porous structure layer 4, thereby being beneficial to the quick fusion and fixation of the tibial platform support 100 with the bone of the human body after the operation, and more effectively improving the recovery effect of the patient after the operation; on the other hand, the problem such as muscle attachment point defect, joint capsule damage that cause under the serious bone defect condition, the utility model discloses tibial plateau holds in palm 100 can also directly improve its stability after replacing through the better fusion of three-dimensional porous structure layer 4 and sclerotin.

Preferably, the porosity of the 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 having a high porosity can well induce bone ingrowth, and the three-dimensional porous structure layer 4 having a small pore size can well induce bone crawling. It should be noted that the cross section of each pore formed by the wire diameter is not a regular circle, but the cross sectional shape thereof may be various shapes, and in view of this, reference to "diameter" of each pore herein should be understood to mean the diameter of the circle when the cross section of each pore is equivalent to a circle. Since the diameter of the cross section equivalent to a circle is calculated from the actual area of the cross section, the value of the diameter obtained is an accurate value. The pores formed by the mutual staggered connection of the silk diameters are communicated with each other, the diameter sizes of the pores are inconsistent, and the diameters and the porosity ranges of the pores of the three-dimensional porous structure layer 4 are specifically set, so that the structure of the three-dimensional porous structure layer 4 can be closer to the trabecular bone structure of a human body.

In the first embodiment as shown in fig. 2 and 3, the face of the abutment prosthesis 21 away from the platform support 1 may be configured as a first plane 211, and the filling prosthesis 22 may include a vertical face 221 perpendicularly connected to the first plane 211, and a first filling arc 222 extending from an end of the vertical face 221 away from the first plane 211 to the bottom face 11 of the platform support 1, the first filling arc 222 matching the shape of the human tibia at the bone defect. Wherein the first planar surface 211 is configured to match the osteotomy plane of the human tibia to provide better support to the tibial plateau tray 100, and the first filling curved surface 222 formed by the customized machining of the filling prosthesis 22 is configured to conform to the medullary canal of the bone defect of the human tibia, such that the filling prosthesis 22 can effectively fill the bone defect. It should be noted here that, thanks to the customisation of the platform-holder connection 2, the first plane 211 can also be formed as a non-planar surface matching the osteotomy plane, and the first filling arc 222 of the filling prosthesis 22 can be configured as an arc curved away from the abutment prosthesis 21, and also as an arc curved towards the abutment prosthesis 21, just as long as it is ensured that the filling prosthesis 22 can effectively fill the bone defect of the human tibia.

In a second embodiment as shown in fig. 4, the side of the abutment prosthesis 21 away from the platform support 1 may be configured as a second plane 212, and the filling prosthesis 22 may include an inclined surface 223 connected at an angle to the second plane 212, and a second filling arc 224 extending from an end of the inclined surface 223 away from the second plane 212 to the bottom surface 11 of the platform support 1, the second filling arc 224 matching the shape of the bone defect of the human tibia. Wherein the second planar surface 212 is configured to match the osteotomy plane of the human tibia to provide better support to the tibial plateau tray 100, and the second filling curved surface 224 formed by the customized machining of the filling prosthesis 22 is configured to conform to the intramedullary canal of the bone defect of the human tibia, such that the filling prosthesis 22 can effectively fill the bone defect. It should be noted here that, thanks to the customisation of the platform-holder connection 2, the second plane 212 can also be formed as a non-plane matching the osteotomy plane, and the second filling arc 224 of the filling prosthesis 22 can be configured as an arc curved away from the abutment prosthesis 21, also curved towards the abutment prosthesis 21, just as long as it is ensured that the filling prosthesis 22 can effectively fill the bone defect of the human tibia.

In a preferred embodiment as shown in fig. 1 to 4, the platform support connection part 2 may further include an extension prosthesis 23 extending from an end of the filled prosthesis 22 remote from the abutment prosthesis 21 in a direction remote from the abutment prosthesis 21, and the extension prosthesis 23 may have a three-dimensional porous structure layer 4 formed on a surface thereof. Through the arrangement, on one hand, the formed extension prosthesis 23 not only can facilitate the tibial plateau support 100 to be implanted into a medullary cavity of a tibia of a human body, but also enables the connection between the tibial plateau support 100 and the tibia of the human body to be more stable; on the other hand, the three-dimensional porous structure layer 4 formed on the surface of the extension prosthesis 23 can better fuse the bone with the extension prosthesis 23, thereby further improving the fixing effect of the tibial plateau tray 100 connected with the human tibia.

In a preferred embodiment as shown in fig. 1, the fixture 3 may include at least two bone screws 31, the platform connecting portion 2 may include threaded holes (not shown) formed on the filling prosthesis 22 and/or the extension prosthesis 23 to be screw-coupled with the bone screws 31, and the surface of the bone screws 31 and/or the inner surface of the threaded holes may be formed with the spatial porous structure layer 4. Preferably, the platform support connecting part 2 may include screw holes formed in the filling prosthesis 22 and the extension prosthesis 23, so that the bone nails 31 may be connected to the filling prosthesis 22 to connect the platform support connecting part 2 to the tibia of the human body, or connected to the extension prosthesis 23 to connect the platform support connecting part 2 to the tibia of the human body, or connected to the filling prosthesis 22 and the extension prosthesis 23 to connect the platform support connecting part 2 to the tibia of the human body, respectively, according to specific fixing requirements, thereby making the connection manner of the platform support connecting part 2 to the tibia of the human body more flexible to further improve the fixing effect of the platform support connecting part 2 to the tibia of the human body. Preferably, the 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 one hand, in combination with the above, the three-dimensional porous structure layer 4 can effectively promote the fusion with the bone, and the bone can be differentiated and regenerated through the pores of the three-dimensional porous structure layer 4 at the joint of the bone nail 31 and the threaded hole, so that the joint of the bone nail 31 and the threaded hole can be fused with the bone tissue, the connection strength of the bone nail 31 and the threaded hole can be better improved, and the micromotion between the bone nail 31 and the threaded hole can be greatly reduced; on the other hand, still be favorable to increasing the frictional force on bone nail 31 and screw hole matched with surface to can effectual improvement bone nail 31 and the joint strength of screw hole, with avoiding deviating from of bone nail 31.

In a preferred embodiment, the axis of the threaded bore may be angled such that bone screw 31 is angled after being threaded into the threaded bore. Through the arrangement, on one hand, the bone nail 31 can be better matched with the arc-shaped surfaces of the first filling arc-shaped surface 222 and the second filling arc-shaped surface 224, so that the connection strength of the bone nail 31 and the threaded hole is effectively improved, and the phenomenon that the bone nail 31 is loosened and falls off is avoided; on the other hand, the angled pegs 31 can subject the augment prosthesis 22 to shear stresses in multiple directions, thereby effectively reducing the risk of micro-motion of the tibial plateau tray 100 relative to the tibia.

In a preferred embodiment, a groove (not shown) is formed on the surface of the platform support part 1 connected to the platform support connecting part 2, and the groove is filled with the three-dimensional porous structure layer 4. Preferably, the depth of the groove may range from 1.5mm to 2mm, and the thickness of the three-dimensional porous structure layer 4 filled in the groove may range from 1.5mm 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 setting, make the utility model discloses tibial plateau holds in palm 100 can be more convenient be applied to the revision replacement that tibial plateau held in the palm 100. Specifically, the utility model discloses tibial plateau holds in palm 100 when being applied to the revision replacement that tibial plateau held in the palm 100, can hold in the palm connecting portion 2 with the platform and carry out the processing of customization, and the platform holds in the palm the part of supporting part 1 and can construct to hold in the palm the shape and the structure of supporting part for the same with current platform, it is the same with the thickness of the three-dimensional porous structure layer 4 of recess intussuseption to hold in the palm the depth of recess, make the thickness that forms three-dimensional porous structure layer 4 on the bottom surface 11 of platform support supporting part 1 not influence the whole thickness that the supporting part 1 was held in the palm to the platform, thereby make platform support supporting part 1 can more match with the structure of the platform support. The formed three-dimensional porous structure layer 4 can be better fused with bone, so that the stability of the platform support supporting part 1 after replacement can be improved.

In a preferred embodiment, the three-dimensional porous structure layer 4 can be processed by laser cladding technology. The laser cladding technique is a process method that selective coating materials are placed on the bottom surface 11 of the platform support part 1, the outer surface of the abutting prosthesis 21 and the outer surface of the filling prosthesis 22, the selected coating materials are simultaneously melted with the thin layers of the surfaces of the platform support part 1, the abutting prosthesis 21 and the filling prosthesis 22 through laser irradiation, and the thin layers are rapidly solidified to form a surface coating which has extremely low dilution and is metallurgically bonded with the materials of the platform support part 1, the abutting prosthesis 21 and the filling prosthesis 22. Three-dimensional porous structure layer 4 that forms through this method processing can guarantee effectively on the one hand that the platform holds in the palm self intensity of supporting part 1, butt false body 21 and filling false body 22 to can guarantee effectively the utility model discloses a tibial platform holds in the palm 100 stability after implanting the human body, on the other hand, three-dimensional porous structure layer 4's the optional kind of material is also more various, thereby can more match with human affected part, has improved the utility model discloses a tibial platform holds in the palm 100 suitability.

Preferably, the material of the three-dimensional porous structure layer 4 may be titanium alloy, pure titanium or tantalum metal, and the like. Preferably, the three-dimensional porous structure layer 4 may be made of a titanium alloy material, preferably Ti6Al 4V.

The utility model also provides a knee joint prosthesis, including above-mentioned tibial plateau holds in the palm 100. As can be seen from the above description, the knee joint prosthesis using the tibial plateau tray 100 does not need to remove the undamaged bone of the patient, and only needs to fill the bone defect of the tibia of the human body with the filling prosthesis 22 to complete the implantation of the tibial plateau tray 100, so that the healthy bone of the human body can be retained by the patient to the maximum extent, the strength of the knee joint of the patient can be effectively improved, and the postoperative motion function of the patient is better; the health bone of the human body can be kept to the maximum extent, and the phenomenon that the tibia is shortened due to excessive removed bone in the process of implanting the prosthesis can be avoided, so that the problems that the affected side of a patient is obviously shortened compared with the healthy side, the function is limited and the like can be effectively avoided; furthermore, the utility model discloses tibial plateau holds in palm 100 still through mounting 3 with its and human shin bone fixed connection, all is formed with three-dimensional porous structure layer 4 on the surface of the bottom surface 11 of platform support portion 1, butt false body 21 and the surface of filling false body 22 simultaneously to the fixed stability of tibial plateau support 100 after implanting has directly been improved.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as 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 solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (10)

1. A tibial plateau tray, comprising:

a platform support portion for connection with a pad of a knee prosthesis;

the platform support connecting part is formed at the bottom of the platform support supporting part and is used for being implanted into a medullary cavity of a human tibia so as to be connected with the human tibia, the platform support connecting part comprises an abutting prosthesis which is connected with the bottom surface of the platform support supporting part and is used for abutting against a osteotomy surface of the human tibia, and a filling prosthesis which is connected with the abutting prosthesis and extends along the direction far away from the platform support supporting part, and the filling prosthesis is used for filling a bone defect part of the human tibia;

at least one fixing part, the fixing part is used for penetrating the tibia of the human body and being connected with the filling prosthesis so as to fix the filling prosthesis on the tibia of the human body.

2. The tibial plateau tray of claim 1 further comprising a solid porous structural layer formed on a bottom surface of the plateau tray support and/or on an outer surface of the abutment prosthesis and/or on an outer surface of the filler prosthesis.

3. The tibial plateau of claim 2 wherein a face of the abutment prosthesis distal from the plateau support portion is configured as a first plane, the filling prosthesis including a vertical face connected perpendicular to the first plane and a first filling contour extending from an end of the vertical face distal from the first plane to a bottom surface of the plateau support portion, the first filling contour matching a shape of a bone defect of a human tibia.

4. The tibial plateau of claim 2 wherein a face of the abutment prosthesis distal from the plateau support portion is configured as a second plane, the filling prosthesis including an inclined surface connected at an included angle to the second plane and a second filling contour extending from an end of the inclined surface distal from the second plane to a bottom surface of the plateau support portion, the second filling contour matching a shape of a bone defect of a human tibia.

5. A tibial plateau tray according to claim 3 or 4 wherein the tray connecting portion further includes an elongate prosthesis extending from an end of the filling prosthesis remote from the abutting prosthesis in a direction remote from the abutting prosthesis, the elongate prosthesis having the layer of solid porous structure formed on a surface thereof.

6. The tibial plateau of claim 5 wherein said fixture includes at least two pegs, said plateau connecting portion including threaded holes formed in said filling prosthesis and/or said lengthening prosthesis in threaded connection with said pegs, said three-dimensional porous structure layer being formed on the surface of said pegs and/or on the inner surface of said threaded holes.

7. The tibial plateau tray of claim 6 wherein the axis of the threaded hole is angled.

8. A tibial plateau tray according to any one of claims 1 to 4 wherein a recess is formed in the side of the tray support portion that is connected to the tray connection portion, the recess being filled with a layer of three-dimensional porous structure.

9. The tibial plateau tray of claim 8 wherein said three-dimensional porous structural layer is machined by laser cladding techniques.

10. A knee prosthesis comprising a tibial plateau tray according to any one of claims 1 to 9.

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