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Review
. 2021 Jan 12;10(2):253.
doi: 10.3390/jcm10020253.

Advances in Osteoporotic Bone Tissue Engineering

Cosmin Iulian Codrea  1   2 , Alexa-Maria Croitoru  1 , Cosmin Constantin Baciu  3 , Alina Melinescu  1 , Denisa Ficai  4 , Victor Fruth  2 , Anton Ficai  1   5
Affiliations
Review

Advances in Osteoporotic Bone Tissue Engineering

Cosmin Iulian Codrea et al. J Clin Med. .

Abstract

The increase in osteoporotic fracture worldwide is urging bone tissue engineering research to find new, improved solutions both for the biomaterials used in designing bone scaffolds and the anti-osteoporotic agents capable of promoting bone regeneration. This review aims to report on the latest advances in biomaterials by discussing the types of biomaterials and their properties, with a special emphasis on polymer-ceramic composites. The use of hydroxyapatite in combination with natural/synthetic polymers can take advantage of each of their components properties and has a great potential in bone tissue engineering, in general. A comparison between the benefits and potential limitations of different scaffold fabrication methods lead to a raised awareness of the challenges research face in dealing with osteoporotic fracture. Advances in 3D printing techniques are providing the ways to manufacture improved, complex, and specialized 3D scaffolds, capable of delivering therapeutic factors directly at the osteoporotic skeletal defect site with predefined rate which is essential in order to optimize the osteointegration/healing rate. Among these factors, strontium has the potential to increase osseointegration, osteogenesis, and healing rate. Strontium ranelate as well as other biological active agents are known to be effective in treating osteoporosis due to both anti-resorptive and anabolic properties but has adverse effects that can be reduced/avoided by local release from biomaterials. In this manner, incorporation of these agents in polymer-ceramic composites bone scaffolds can have significant clinical applications for the recovery of fractured osteoporotic bones limiting or removing the risks associated with systemic administration.

Keywords: 3D printing; biomaterial scaffolds; bone; osteoporosis; strontium ranelate.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Bone composition. Realized based on [10].
Figure 2
Figure 2
Physical properties of bone scaffolds and their effects on host and bone regeneration. Realized based on [17].
Figure 3
Figure 3
The key considerations for designing a scaffold or determining its effectiveness. Realized based on [24].
Figure 4
Figure 4
Synthetic HA obtaining methods. Realized based on [4].
Figure 5
Figure 5
Different biomaterials for bone defect treatment. Realized based on [19,59].
Figure 6
Figure 6
Benefits and potential limitations of different scaffold fabrication methods. Realized based on [59].
Figure 7
Figure 7
(a) Bone mass evolution during life; (b) bone mass evolution in normal versus assisted healing of bone defects.
Figure 7
Figure 7
(a) Bone mass evolution during life; (b) bone mass evolution in normal versus assisted healing of bone defects.
Figure 8
Figure 8
Schematic representation of bone grafting, healing and bone density distribution: (a) fracture; (b) bone grafting and healing; (c) bone density distribution.
See this image and copyright information in PMC

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