The author suggests that what he refers to as the “zone of integrated balance” is an important variable in determining the alignment of lower limb prosthesesBy using a force plate that objectively measures the center of pressure on the prosthetic foot, the weight and load lines of the patient can be determined. The distance between these lines is the “zone of integrated balance.” The author suggests that the closer the lines approximate one another the more integrated is the balance of the prosthetic side in relation to the overall balance of the amputeeIn the author's clinical experience, a narrow zone of 0 to 1 cm has been found to be reasonable in providing an appropriate prosthetic alignment