Juana competed at a total of 4 paralympics winning 14 medals, eight of them gold. Over her career she competed in a variety of events from 60m to marathon, pentathlon, shot putt and javelin. Her first games were the 1980 Summer Paralympics held in Arnhem where as well as competing in the shot putt and slalom she won gold in the 1500m in a new world record, 60m, 800m having taken 10 seconds of the world record set in the heats and was also part of the Mexican gold medal 4x60m relay team. Her second games in 1984 were not quite as successful as she competed in 200m, 400m,800m javelin and slalom as well as winning bronze in the 1500m and 100m, silver in the 5000m behind Canada's A Ieretti in a new world record and winning gold in the marathon ahead of her compatriot E Belmont and in the pentathlon. 1988 would see Juana restricted to four events however she won a medal in each of them finishing second in the 200m and in the 4 × 200 m behind a world record setting American quartet as well as breaking the paralympic games record to win gold in the 400m and setting a new world record on her way to winning the 100m. Her final games came in 1992 where she failied to make the final of the 100m, 200m and 400m but did win a final medal as part of the Mexican bronze medal winning relay team.