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Updated: Jun 14, 2026
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Multi-Scale Modification of Metallic Implants With Pore Gradients, Polyelectrolytes and Their Indirect Monitoring In vivo
Published on: July 1, 2013
Initial evaluation of bone ingrowth into a novel porous titanium coating
Rima M Wazen1, Louis-Philippe Lefebvre, Eric Baril
1Laboratory for the Study of Calcified Tissues and Biomaterials, Faculty of Dentistry, Université de Montréal, 2900, boul. Edouard-Montpetit, Pavillon Roger-Gaudry, Montréal, Québec H3T 1J4, Canada.
Summary
A novel titanium (Ti) foam coating significantly enhanced bone ingrowth in orthopedic implants. Within two weeks, the Ti foam showed 97.7% bone filling, improving implant-bone contact and osseointegration potential.
Area of Science:
- Biomaterials Science
- Orthopedic Surgery
- Materials Engineering
Background:
- Porous metals like sintered beads and meshes are established in orthopedic applications.
- Metal foams offer higher porosity and surface area than traditional coatings.
- High porosity in implants facilitates bone ingrowth and mechanical interlocking.
Purpose of the Study:
- To evaluate in vivo bone ingrowth into novel titanium (Ti) foam-coated implants.
- To compare bone ingrowth and osseointegration of Ti foam versus dense Ti controls.
- To assess the biocompatibility and bone formation capacity of the new Ti foam coating.
Main Methods:
- Ti foam-coated implants and dense Ti controls were implanted transcortically into rat tibias.
- Animals were sacrificed at 2 weeks post-implantation.
- Bone ingrowth was quantified using backscattered electron imaging and X-ray microtomography.
Main Results:
- The Ti foam exhibited 50% interconnected pores and a higher surface area than dense Ti.
- At 2 weeks, Ti foam pores showed 97.7% bone filling.
- Bone-implant contact area was significantly increased in Ti foam implants compared to dense Ti controls.
Conclusions:
- The novel Ti foam coating is biocompatible and supports significant bone formation.
- The high porosity and surface area of Ti foam enhance osseointegration.
- Ti foam coatings show potential for improving orthopedic implant performance.
