Answer
$55\%$ of patients received therapy for the ankle, knee, or hip.
Work Step by Step
8% of the patients received therapy for the ankle. 15% of the patients received therapy for the hip. 32% of patients received therapy for the knee. To find the percentage that received therapy for either the ankle, hip, or knee, we simply add these three percents. $8\%+15\%+32\%=55\%$.