This thesis aims to investigate the biomechanical analysis of descending stairs with a focus on an individualized approach to contribute to a better understanding of disorders and asymmetries between the left and right sides of an individual and to reduce the risk of injuries. This work analyzes the etiology and consequences of biomechanical disorders observed during stair descent and compares gait analysis with stair descent analysis. The methodological approach includes measurement using a pedobarographic platform, designed as an individual assessment, which serves to compare biomechanical parameters between the left and right sides in different movement scenarios. Gait disorders can lead to serious consequences such as falls, injuries, and decreased mobility, significantly impairing quality of life. Biomechanically, descending stairs differs from walking on a flat surface, as descending requires greater effort from the lower extremities and carries a higher risk of injury. These issues necessitate a biomechanical analysis to identify differences between the left and right sides during various types of movement, considering the individual characteristics and limitations of the participant. The results indicate significant variations in forces and pressures across different movement phases, such as walking, push-off, step, and landing. The highest forces and pressures were observed during phases requiring rapid changes in speed and direction, such as push-off and landing. Identified biomechanical asymmetries, such as increased forces on the left leg during certain phases, may point to functional differences in strength, stability, or mobility between the legs and possible measurement limitations, such as unequal speed and tempo of movement execution. This type of analysis provides valuable contributions not only for optimizing the design of medical aids but also for a broader constructive approach in engineering, where human biomechanics is increasingly used as a basis for innovations in product design aimed at individually improving the quality of life.