Novel alternative therapy for spinal tuberculosis during surgery: reconstructing with anti-tuberculosis bioactivity implants

Abstract

Accompanied with the worsening of the pulmonary tuberculosis bacterium (TB) epidemic, the incidence of spinal TB has increased in recent years. Spinal reconstruction and stabilisation, and bone defect repair play a crucial role in the surgical treatment of spinal TB. Unfortunately, the existing materials have not completely met the requirements for spinal TB reconstruction due to their diverse deficiencies. Therefore, there is an urgent need to develop novel reconstructing implants. Poly-DL-lactide (PDLLA) and nano-hydroxyapatite (nHA) are two promising drug delivery systems (DDS) and materials for bone repair, which could help us to overcome the difficulties in spinal TB reconstruction in the future. In this article, we discuss the properties of PDLLA and nHA, two potential drug delivering and bone repair materials for spinal TB reconstruction. We also presented two alternatives for spinal TB in future. Two strategies have the potential for treating spinal TB in the future. One such strategy consists of mixing anti-TB drugs, PDLLA with nHA to fabricate a novel three-dimensional (3D) porous scaffold via 3D printing (3DP) technology. Another is preparing a novel titanium mesh implant coated with drugs/PDLLA/nHA composites by solvent evaporation and low-temperature drying technology. These two hypotheses have recently been tested in a laboratory setting by our team.

Keywords::

• bone defect
• nHA
• PDLLA
• reconstruction
• spinal TB