Needle Gauge And Length Effects On Human Stem Cell Viability During Injection: A Comprehensive Review

This review highlights the impact of needle gauge and length on the viability of human stem cells during injection, which is crucial for the success of stem cell-based therapies. It discusses how mechanical stress from needles can damage cells, affecting therapeutic outcomes. The review analyzes empirical evidence across different stem cell types and the mechanical forces involved, balancing the need to minimize tissue trauma with smaller needles against the need to preserve cell viability. It offers evidence-based recommendations for optimizing injection parameters in clinical settings.