Osseointegration of Titanium Implants in Total Hip Arthroplasty

Revision hip arthroplasty using a cementless modular tapered stem

“…Failure was defined as revision arthroplasty or radiographic evidence of femoral component loosening, indicated by an Engh fixation score ≤10 or an ARA score <2. Vertical femoral migration of >5 mm was defined as subsidence [15].…”

Metal and Ceramic Implants

“…An arthroplasty with different compounds may subsequently produce different wear particles that are metallic, ceramic and polymeric in nature. In general, it seems that: * polymers and ceramics give rise to fewer problems than metals (Pazaglia et al 1987); * the size and form of the particles play an important role: small or irregular particles are more active than larger or regular ones (Black 1988;Dorr et al 1990); * alloys containing Co-Cr-Ni raise more concern than Ti alloys (Sarmiento and Gruen 1985;McCutchen et al 1990). These differences are due to the physicochemical characteristics of alloys and their particles.…”

A histomorphometric study on osteoconduction and osseointegration of titanium alloy with and without plasma-sprayed hydroxyapatite coating using back-scattered electron images

“…Currently, hydroxyapatite (HA)-coated titanium implant, presenting itself simultaneously with excellent biocompatibility and mechanical properties, raises much interest as an alternative method of long-term fixation I- [2][3][4].…”

“…Therefore, it is generally described as osteoconductive. Furthermore, at the optical microscopic (OM) I- [5][6][7][8][9][10][11][12][13][14] and the scanning electron microscopic (SEM) [15,16] level, the evidence of osseointegration [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]18], a direct bone-to-HAC contact, has been reported. However, at the SEM level, there are no quantitative studies on osteoconduction and osseointegration of HA-coated implant reported.…”

“…Some studies clearly demonstrated that Ti-6AI-4V implants can be osseointegrated at the OM level [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]20]. However, to our knowledge, there is only a 2.5 year post-operative anatomical study where the osseointegration to pressfit Ti-6A1-4V femoral component was reported at the SEM level [3]. As a consequence, the bone/ Ti-6A1-4V interface has to be further evaluated.…”