Knee’s biomechanics and the gait cycle

Biomechanics is a discipline that studies the movement of the body in its different circumstances. The knee is made up of different structures, bones, ligaments, menisci, and muscles that provide mobility and stability to this joint. According to studies, the knee only performs flexion and extension movements. The functional approach related to the scenario observed and evaluated by the examiner or referred to the patient with the help of questionnaires. With studies of human gait, it is defined as bipedal locomotion with alternating activity of the lower limbs, characterized by a succession of double support and unipodal support. The objective of this work was to apply easy-to-use tools to perform a basic assessment of the upper and lower extremities and the gait cycle. Through the Kinovea and SkillSpector programs, the studies were checked to assess normal gait in two dimensions, as well as allow kinematic and kinetic evaluation of flexion and extension of the ankle and knee joints. In addition, it has been tried to determine if there is kinematic asymmetry during a walk, checking the values of only one side of the leg that were analyzed. Three students and two volunteers were analyzed in different phases. With the help of the programs that were managed, differences were demonstrated to detect changes in a knee flexion-extension as in a gait cycle. And following the line of previous studies, it was found that there is no kinematic asymmetry during the gait cycle.