Can Plantar Fasciitis Cause Knee Pain? The Surprising Connection! Are your heels hurting all the time because of plantar fasciitis, and now your knees are also hurting? You're not alone. Many people who have long-term foot pain often start to feel discomfort in their knees too.So, can plantar fasciitis cause knee pain? The short answer is yes. But there's more to it. The pain in your feet can slowly affect your knees, the way you stand, and how you move...