Research Article

The Biomechanics and Optimization of the Needle-Syringe System for Injecting Triamcinolone Acetonide into Keloids

Table 3

Ratios of injection force required for 3 and 5 mL polypropylene syringes relative to 1 mL Tuberculin polypropylene syringe at 1, 3, and 5 mm/sec, using 25 G, 16 mm needles.

1 mm/sec 3 mm/sec5 mm/sec

3 mL polypropylene1.8x2.2x2.4x
5 mL polypropylene5.3x7.7x10.2x