Bipedalism is the ability to maintain an upright posture and move efficiently on two lower limbs. This mode of locomotion involves a complex reorganization of skeletal and muscular structures, including the adaptation of the pelvis, the realignment of the knee and foot joints, and the structural modifications of the spinal column to support the torso and head during sustained upright movement. The shift to habitual bipedalism is theorized to have offered various adaptive advantages, such as freeing the hands for tool use and carrying objects, improving visibility in diverse environments, and increasing energy efficiency during long-distance terrestrial travel. The biomechanics of upright posture necessitate specialized muscular control and skeletal support to counter gravity, leading to distinct locomotor patterns compared to quadrupedal forms.