The porous coating of joint implants as a factor of their stable fixation

Abstract

To ensure effective biological fixation of the newly designed cementless hip joint implant, a macroporous material proposed to be used as a coating for the implant was studied. Eighty-five samples of the cylindrical implants produced via hot sintering from spherical titanium granules having different diameters were analyzed. Morphological, mechanical, and other findings revealed a rapid bone ingrowth into the sample pores and their firm biological fixation in the canine tubular bone. The selected material having optimal characteristics will be applied to the surface of the specially designed joint implant. Its pilot-designed model is manufactured to make initial clinical trials, followed by updating for applying the ball coating. The new joint implant macroporous coating with its improved geometry will enhance the fixation of the construction due to bone ingrowth, contribute to the rapid postoperative recovery of a patient’s full-load walking ability, and minimize the risk for aceptic loosening of the implant.

Keywords

cementless endoprosthesis / porous coating / stable anchorage / bone ingrowth / hip joint

References

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[2] Hensge Е. J., Grundei H., Etspuler R. //Z. Orthop. — 1985. — Bd 123, N 5. — S. 821—828.

[3] Ide T., Akamatsu N., Shiba N., Chao E.Y.S. //Pelvic and Hip Surgery. — Bologna, 1991. — P. 107.

[4] Wiedel J.D. //Ibid. — P. 89—90.

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