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원중희 ( Choong Hee Won ),김용민 ( Yong Min Kim ),최의성 ( Eui Sung Choi ),유진선 ( Jin Seon Yoo ),지종훈 ( Jong Hun Jee ) 대한고관절학회 1996 Hip and Pelvis Vol.8 No.2
The purpose of this study was to see the host-bone response to pure titanium fiber-metal surrounding titanium alloy core and rough-blasted titanium alloy(Ti-6AI-4V) implants placed in the medullary cavity of distal femur of rabbit. Each rod was implanted into medullary cavity of right distal femur through the knee. A total of thirty New Zealand rabbits were used. Fiber-metal rods were inserted into fifteen femurs and remaining fifteen were for rough blasted rods. The rabbits were sacrificed at one, two, four, six, and twelve weeks after operation and the specimens were studied histologically. Percentage implant perimeter surface length in contact with new bone were measured. Histomorphometric study showed excellent osseointegration onto rough-blasted titanium compared to that of fiber-metal titanium rod. When whole group means were compared, it was found that 36.5 per cent of perimeter of the rough blasted implants was covered with bone compared with 19.2 per cent of the perimeter of the fiber-metal coated implants. Peripheral bone formation and osseointegration was evident at one week after implantation and quantitative plateau was reached at four weeks. This study proved that nonporous-coated rough blasted titanium surface showed evident osseointe- gration which is not inferior to fiber-metal titanium surface. We have radiographic and clinical evidence that hip prostheses with rough-blasted titanium surface show osseointegration. The manufacturing cost of porous-coated prosthesis is high and the adverse effects of it are many. The use of rough-blasted surface may help to improve the functional outcome of total joint replacements and reduce the cost of arthroplasty.