Injectability of the macromonomer and macromonomer with methacrylated L-DOPA compositions are determined by measurements of injection force and compression stress, and the results are presented in Figure to the interaction between needle size, material viscosity, and crosslinking density. At low L-DOPA levels, the network is less crosslinked, leading to a softer material that may deform more easily under compression, resulting in lower force and compression stress. Our findings indicate that despite high viscosity of the obtained compositions they exhibit excellent injectability even with up to an 18 G needle where minimally invasive surgical procedures employing relatively large gauges of instruments such as catheters. This suitability may extend future applications of such compositions to various techniques, including laparoscopic and catheter procedures .