A kind of hip joint prosthesis and preparation method thereof
A technology of hip joint prosthesis and joint socket, applied in the direction of hip joints, prostheses, joint implants, etc., can solve the problems of human femoral stress shielding, poor biocompatibility, and short service life, so as to promote attachment growth and reduce The effect of absorbing and reducing secondary damage
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Embodiment 1
[0066] (1) Hip prosthesis
[0067] Embodiment 1 provides a kind of hip joint prosthesis, comprises acetabulum 1, femoral head 2, femoral neck 3, femoral stem 4 and collar plane 5, as figure 1 As shown, wherein the femoral stem 4 is provided with a hole-like structure, and the hole-like structure includes hole-like structures with different hole-like ranges, wherein the femoral head 2, the femoral neck 3 and the femoral stem 4 adopt It is made of titanium alloy material containing Nb, wherein, the outer surface and the inner surface of the femoral stem 4 are respectively provided with hydroxyapatite layers.
[0068] Wherein, the femoral stem is provided with a porous structure, and the area of the porous structure accounts for 85% of the surface of the femoral stem. The porous structure is a large hole >100 μm, a medium hole of 10-100 μm, and a small hole <10 μm, Wherein the number of the macropore accounts for 10% of the total amount of the pore structure, the mesopore stru...
Embodiment 2
[0089] The difference between embodiment two and embodiment one is that the hip joint prosthesis in embodiment two does not include a collar plane, such as figure 2 As shown, wherein, the thickness of the hydroxyapatite layer on the inner and outer surfaces of the femoral stem is 40 μm. The acetabulum is made of aluminum oxide material, and the inside of the acetabulum is an aluminum oxide ceramic socket.
[0090] The femoral stem is provided with a hole-like structure, and the area of the hole-like structure accounts for 83% of the surface of the femoral stem, wherein the number of the large holes accounts for 8% of the total amount of the hole-like structure, and the mesopore structure accounts for 83% of the total amount of the hole-like structure. 1% of the total structure, the number of the pores accounts for 91% of the total pore structure, and the corresponding Young's modulus is 46GPa.
[0091] Experimental results:
[0092] After cultivation, under the observation ...
Embodiment 3
[0094] The difference between the third embodiment and the first embodiment is that the thickness of the hydroxyapatite layer on the inner and outer surfaces of the femoral stem and the lower surface of the collar plane in the third embodiment is 60 μm.
[0095] Wherein, the femoral stem is provided with a hole-like structure, and the area of the hole-like structure accounts for 75% of the surface of the femoral stem, wherein the number of the large holes accounts for 12% of the total number of the hole-like structures, and the mesopore structure accounts for 75% of the surface of the femoral stem. 3% of the total number of pore-like structures, and the number of small holes accounts for 85% of the total number of pore-like structures. The corresponding Young's modulus is 57 GPa.
[0096] Experimental results:
[0097] After cultivation, under the observation of the scanning electron microscope, the bone cell coverage rate of the whole prosthesis reached 45%, and the reticu...
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