FIELD: medicine; traumatology; orthopedics.
SUBSTANCE: vertebra's body implant for front spondylodesis is made of porous powder bio-compatible matter in form of rod with support edge surfaces. Substance edge surfaces are made rough. Size of macroscopic roughness equals to 0,3-0,6 average size of particles of powder. Side surface of rod is made smooth and rod is made anisotropic-porous in total. Maximal value of porosity close to and onto support surfaces equals to 0,6-0,8, close to central part it equals to 0,2-0,3 and minimal value - at side surface and close to it - belongs to 0,10-0,15 range. Cross-section of rod is made symmetrical to central plane. Front part of cross-section has shape of circle and rear part has shape of square with rounded angles which has side to equal to diameter of circle.
EFFECT: higher stability of primary fixation; reduced traumatism; shorter operation time; simplified design of implant; simplified procedure of implantation.
12 cl, 5 dwg
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