Osseointegration of Ti6Al4V alloy implants coated with titanium nitride by a new method

Abstract

A fter cemented total hip arthroplasty (THA) there may be failure at either the cement-stem or the cement-bone interface. This results from the occurrence of abnormally high shear and compressive stresses within the cement and excessive relative micromovement.We therefore evaluated micromovement and stress at the cement-bone and cement-stem interfaces for a titanium and a chromium-cobalt stem. The behaviour of both implants was similar and no substantial differences were found in the size and distribution of micromovement on either interface with respect to the stiffness of the stem.Micromovement was minimal with a cement mantle 3 to 4 mm thick but then increased with greater thickness of the cement. Abnormally high micromovement occurred when the cement was thinner than 2 mm and the stem was made of titanium.The relative decrease in surface roughness augmented slipping but decreased debonding at the cement-bone interface. Shear stress at this site did not vary significantly for the different coefficients of cement-bone friction while compressive and hoop stresses within the cement increased slightly.

Application of Dental Implants Coated with Titanium Nitride: The Experimental Study with Porphyromonas gingivalis Infection

“…The affinity of bone for the implant index of TiN-coated stainless steel was comparable to that of alumina, but not significantly better than uncoated stainless steel (Hayashi et al, 1989). TiN-coated Ti6Al4V rods were implanted in rat femurs and showed biocompatibility and bonebonding properties similar to uncoated Ti6Al4V rods (Sovak et al, 2000). Relative bone area and BIC of TiN-coated cp titanium threaded implants in rabbits were similar to TiO 2 -coated cp titanium (Larsson et al, 2013).…”

Experimental Analysis of the Healing Process in the Area of Tibial Bone Fracture

“…Одним из перспективных направлений ис-следований в этой области остается разработка и внедрение в клиническую практику биоинерт-ных покрытий, снижающих риск развития воз-можных осложнений остеосинтеза. В ряде ис-следований и соответствующих публикациях была подтверждена эффективность и безопас-ность покрытия имплантатов нитридами сверх-твердых металлов [2,3,17], которые обладают биосовместимостью и обеспечивают адекват-ную остеоинтеграцию [18]. Эти покрытия харак-…”

http://www.omicsgroup.org/journals/polyolefin-from-commodity-to-specialty-2169-0022-1000e111.php?aid=47818

“…Ti-6Al-4V (Ti64) has been use for biomaterials due to its good biocompatibility [1][2][3]. Therefore, the combination use with the conventional stainless steel of SUS316L (SUS) is increasing due to accidental misuse in emergency cases or necessary choice of stainless wire to tie up bone fragments in complicated fracture and femoral mid shaft fracture after Total Hip Arthroplasty.…”