“…There were 89 articles containing information about the design of 59 different LL prostheses or prosthetic components, including feet. Commonly mentioned were a polycentric knee designed in collaboration between Stanford and Jaipur, [23][24][25] polypropylene components from the International Committee of the Red Cross (ICRC), [26][27][28] a prosthetic knee designed by LeTourneau Engineering Global Solutions (LEGS), [29][30][31][32][33][34] the Shape&Roll foot, [35][36][37][38] the monolimb, [39][40][41][42][43][44] the Jaipur foot, [45][46][47][48][49][50][51][52][53] and the Niagara Foot. [54][55][56][57][58][59][60][61][62] There were 19 articles that included information about the design of 11 distinct methods related to prosthetics service provision such as the transtibial alignment system, 39,40,[63][64][65]…”