Biomechanics plays a fundamental role in understanding postural control performance, bridging the gap between theoretical knowledge and practical applications in clinical settings. This chapter explores the biomechanical aspects that contribute to assessing postural stability. Key methodologies, such as force plate analysis, motion capture systems, and electromyography, are discussed, highlighting their relevance in evaluating balance mechanisms. The influence of intrinsic and extrinsic factors, including the characteristics of individuals such as height, body mass, strength and fatigue, as well as neuromuscular function, proprioception, and environmental conditions, is also examined. Moreover, recent technological innovations, such as wearable sensors and artificial intelligence-driven assessments, are transforming the way postural control is analyzed and optimized. The integration of these biomechanical tools, added to the knowledge of impact variables, provides valuable insights for clinicians and researchers in developing targeted interventions for injury prevention, rehabilitation, and performance enhancement. Ultimately, this chapter underscores the significance of biomechanics in advancing postural control strategies, fostering a deeper understanding of human movement and its implications for health and performance.