Prosthetic knee alignment is essential for below-the-knee amputees to achieve natural gait, balance, and comfort. Proper alignment reduces strain on the residual limb, hips, and lower back, while enhancing stability and energy efficiency during walking and running.Regular evaluation and adjustment of knee alignment are critical to accommodate changes in residual limb volume, activity levels, or prosthetic components. Correct prosthetic knee alignment supports long-term mobility, prevents discomfort, and improves overall confidence in movement.