Figure 2.

Different bioprinting strategies are available for cartilage tissue engineering. (A) Inkjet bioprinting based on the deposition of droplets formed by a thermal or piezoelectric actuator on a support. (B) Bioextrusion (or microextrusion) based on the extrusion of a continuous bioink filament through a printing needle driven by a screw, pneumatic or a piston. (C) Laser-assisted bioprinting uses a laser-based energy source to produce droplets via the production of a vapor bubble in the substrate.