## Abstract Achieving solid skeletal attachment is a requirement for the clinical success of orthopedic implants. Porous or roughened surfaces and coatings have been developed and used with mixed success to achieve attachment due to bone ingrowth. Silicon nitride is a high performance ceramic whose
Preliminary observations of bone ingrowth into porous materials
โ Scribed by Robertson, Diane M. ;St. Pierre, Leon ;Chahal, Ramlal
- Publisher
- John Wiley and Sons
- Year
- 1976
- Tongue
- English
- Weight
- 750 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0021-9304
No coin nor oath required. For personal study only.
โฆ Synopsis
Abstract
A preliminary investigation has been performed (a) to determine the kinetics of bone ingrowth into porous materials and to determine if this ingrowth could be catalyzed by the presence of a foreign substrate; and (b) to measure the bonding capability of bone with a porousโsurfaced metallic implant.
Tests on porousโsurfaced implants corroborate the work of other investigators in showing that bony tissue will grow into a porous substance that has pores large enough to support tissue nourishment. The shear strength of the boneโimplant interface appears to increase with pore size and time of healing. Furthermore, it may be possible to catalyze this tissue ingrowth by the introduction into the fracture site of a foreign substance; in this experiment, glass beads 200โ290 ฮผ in diameter were used.
๐ SIMILAR VOLUMES
## Abstract Experiments have been devised to study the rate of ingrowth of bone into porous metal with pore sizes up to 100 ฮผ and to study the significance of a gap between the porous metal surface and bone. When the porous coat was in direct apposition with bone, the implant was firmly locked in
## Abstract Research to determine whether porousโcoated Vitallium intramedullary rods could be used to bridge segmental defects in long bones was performed using rabbit tibias as a suitable model for human bone growth. Oneโcentimeter segments of the midshaft of tibias of mature rabbits were removed
Porous hydroxyapatite, converted hydrothermally from the calcium carbon exoskeleton of the coral genus Goniopora (CHAG), has been shown to be effective as a scaffold for bone ingrowth (2,3,(5)(6)(7)9). However, the large pores in the material resulted in low compressive strengths. In a previous stud
This study sought to quantify bone ingrowth from a single bone-implant surface into porous block hydroxyapatite used in maxillofacial applications. Seventeen maxillary hydroxyapatite implants (implant time of 4-138 months, 39-month mean) were harvested for analysis from 14 patients. The implants had
## Abstract Previous investigations have shown that both the early biological response and the mechanical properties of a porous hydroxyapatite bone graft substitute are highly sensitive to its pore structure. The objective of this study was to evaluate whether the pore structure continued to influ